Laboratory Events | Brookhaven National Laboratory

Calendar Format
List Format

« previous	February 2015					next »
Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
1 No events scheduled	2 C-AD Accelerator Physics Seminar 11 am, Bldg 911B, Large Conf. Rm., Rm A202 Hosted by: Peggs/Kewisch C-AD Accelerator Physics Seminar 11:30 am, Bldg 911B, Large Conf. Rm., Rm. A202 Hosted by: Kewisch/Peggs	3 No events scheduled	4 High-Energy Physics & RIKEN Theory Seminar 2 pm, Small Seminar Room, Bldg. 510 Hosted by: Sally Dawson	5 Condensed-Matter Physics & Materials Science Seminar 4:30 pm, 2nd floor conference room, Bldg 734 Hosted by: Robert Konik	6 CFN Proposal Deadline 11:45 pm, CFN	7 No events scheduled
8 No events scheduled	9 Condensed-Matter Physics & Materials Science Seminar 1:30 pm, ISB 201 seminar room Hosted by: Weiguo Yin When viewed as an elementary particle, the electron has spin and charge. When binding to the atomic nucleus, it also acquires an angular momentum quantum number corresponding to the quantized atomic orbital it occupies. Even if electrons in solids form bands and delocalize from the nuclei, in Mott insulators they retain their three fundamental quantum numbers: spin, charge and orbital. The hallmark of one-dimensional physics is a breaking up of the elementary electron into its separate degrees of freedom. The separation of the electron into independent quasi-particles that carry either spin (spinons) or charge (holons) was first observed fifteen years ago. Here we report observation of the separation of the orbital degree of freedom (orbiton) using resonant inelastic X- ray scattering on the one-dimensional Mott insulator Sr2CuO3. We resolve an orbiton separating itself from spinons and propagating through the lattice as a distinct quasi-particle with a substantial dispersion in energy over momentum, of about 0.2 electronvolts, over nearly one Brillouin zone [1]. [1] J. Schlappa, K. Wohlfeld, K. J. Zhou, M. Mourigal, M. W. Haverkort, V. N. Strocov, L. Hozoi, C. Monney, S. Nishimoto, S. Singh, A. Revcolevschi, J.-S. Caux, L. Patthey, H. M. Rønnow, Jeroen van den Brink and T. Schmitt, Nature 485, 82 (2012).	10 No events scheduled	11 High-Energy Physics & RIKEN Theory Seminar 2 pm, Small Seminar Room, Bldg. 510 Hosted by: Sally Dawson In this talk I will discuss the role of electric dipole moments (EDMs) as probes of physics beyond the Standard Model (BSM). In the first part of the talk I will present an overview of the physics reach of various searches and I will discuss the complementarity of different EDM probes. In the second part of the talk I will discuss ongoing work towards the computation of the BSM-induced neutron and proton EDM using lattice Quantum ChromoDynamics. Instrumentation Division Seminar 2:30 pm, Large Conference Room, Bldg. 535 Resolving the time evolution of fast processes, measuring the time-of-flight of particles, and looking at time correlations in spatially resolved events are the main drivers for the development of imagers with the best possible time resolution. In the talk I will briefly review the fast imaging in general and then will discuss applications of a fast camera with 10 ns resolution to time resolved X-ray imaging and to imaging mass spectrometry. The camera, which is based on a silicon sensor and Timepix readout chip, successfully recorded the first data at several mass spectrometers and at NSLS-I.	12 RIKEN/BNL Lunch Time Talk 12:30 pm, Building 510 Room 2-160 Hosted by: Tomomi Ishikawa We discuss recent progress, using the kinetic theory framework, in understanding the non-equilibrium evolution of overpopulated systems that resemble the glasma during the early stage of heavy ion collisions. We analyze a number of important factors that influence the course of thermalization in such systems, and in particular their consequences for the nontrivial dynamics driving Bose-Einstein Condensation as well as the isotropization. We discuss recent progress, using the kinetic theory framework, in understanding the non-equilibrium evolution of overpopulated systems that resemble the glasma during the early stage of heavy ion collisions. We analyze a number of important factors that influence the course of thermalization in such systems, and in particular their consequences for the nontrivial dynamics driving Bose-Einstein Condensation as well as the isotropization.	13 HET/BNL Lunch Time Talk 12 pm, Building 510 Room 2-95 Hosted by: Amarjit Soni NSLS-ll Town Meeting 1 pm, Building 703, Large Conference Room Hosted by: NSLS-ll Users' Executive Committee The NSLS-II staff and user community are invited to a Town Meeting on Friday, February 13, from 1-3 p.m. in building 703, Large Conference Room. Watch webcast starting at 1 p.m. http://www.bnl.gov/video/	14 No events scheduled
15 No events scheduled	16 Lab Holiday: President's Day No events scheduled	17 CFN Workshop 9:30 am, CFN Second Floor Seminar Room Hosted by: Aaron Stein Second CFN Workshop on Electron Beam Lithography Tuesday and Wednesday February 17 & 18, 2015 9:30am - 4:30pm Electron beam lithography (EBL) is a key enabling tool for nanofabrication and nanoscience. The Nanofabrication facility at the Center for Functional Nanomaterials (CFN) at Brookhaven National Laboratory (BNL) invites its Users, potential CFN Users, external EBL users both novice and expert and anyone else interested in learning about this technique to a workshop to on electron beam lithography. The Workshop will include presentations on electron beam lithography techniques and results from current users. Also highlighted will be tips and strategies from CFN Personnel on how to effectively use our Nanofabrication facilities. The workshop will focus on practical information about specific techniques, applications and troubleshooting. Short talks will take place in an informal setting with plenty of time for questions and discussion. This is an excellent opportunity to learn about the different types of structures and applications of EBL, to get answers to questions both basic and complex and to help build your EBL knowledge base. One full day of the workshop will be devoted to pattern preparation techniques. Featured will be an applications engineer from GenISys Inc. to present the BEAMER software with hands-on demonstrations of advanced pattern conversion techniques and tutorials on the use of proximity effect correction.	18 CFN Workshop 9:30 am, CFN Second Floor Seminar Room Hosted by: Aaron Stein Second CFN Workshop on Electron Beam Lithography Tuesday and Wednesday February 17-18, 2015 9:30am - 4:30pm Electron beam lithography (EBL) is a key enabling tool for nanofabrication and nanoscience. The Nanofabrication facility at the Center for Functional Nanomaterials (CFN) at Brookhaven National Laboratory (BNL) invites its Users, potential CFN Users, external EBL users both novice and expert and anyone else interested in learning about this technique to a workshop to on electron beam lithography. The Workshop will include presentations on electron beam lithography techniques and results from current users. Also highlighted will be tips and strategies from CFN Personnel on how to effectively use our Nanofabrication facilities. The workshop will focus on practical information about specific techniques, applications and troubleshooting. Short talks will take place in an informal setting with plenty of time for questions and discussion. This is an excellent opportunity to learn about the different types of structures and applications of EBL, to get answers to questions both basic and complex and to help build your EBL knowledge base. One full day of the workshop will be devoted to pattern preparation techniques. Featured will be an applications engineer from GenISys Inc. to present the BEAMER software with hands-on demonstrations of advanced pattern conversion techniques and tutorials on the use of proximity effect correction. Condensed-Matter Physics & Materials Science Seminar 11 am, ISB Bldg. 734, Conf. Rm. 201 (upstairs) Hosted by: Mark Dean Recent theoretical and experimental studies have predicted a very interesting electronic phase diagram in 5d iridate system arising due to interplay of spin orbit interaction and the electronic correlation. Spin-orbit Mott phase is one such electronic phase realized in Ruddelsden-Popper (RP) series [Srn+1IrnO3n+1] oxides. Sr3Ir2O7 (n=2) and Sr2IrO4 (n=1) are two representative candidates of this series. Although their ground state properties are studied to some extent, very little is known regarding how the properties of their antiferromagnetic, insulating, parent states evolve upon carrier substitution. One way of experiencing the strength and relevance of electronic correlation in any condensed matter system is by doping charge carriers. The presence of electronic correlations in the host system determines the fate of the dopant and hence stabilizes a new electronic/magnetic ground state. I will discuss about importance of electronic correlations in one such doped system Sr3 (Ir1-xRux) 2O7 using combined neutron scattering, electric transport and magnetization techniques. Our findings demonstrate that correlation effects felt by carriers introduced within in a 5d Mott phase remain robust enough to drive electron localization, a key ingredient in emergent phenomena such as high temperature superconductivity and enhanced ferroic behavior. References: [1]. Dhital, Chetan, et al. "Spin ordering and electronic texture in the bilayer iridate Sr3Ir2O7." Physical Review B 86.10 (2012): 100401. [2]. Dhital, Chetan, et al. "Neutron scattering study of correlated phase behavior in Sr2IrO4." Physical Review B 87.14 (2013): 144405. [3]. Dhital, Chetan, et al. " Carrier localization and electronic phase separation in a doped spin-orbit-driven Mott phase in Sr3 (Ir1�"xRux) 2O7 (Nature communications,2014)	19 English for Speakers of Other Languages (ESOL) Event 12 pm, Chemistry Building 555, 3rd Floor, Room 300 Hosted by: T. Sampieri	20 HET/BNL Lunch Time Talk 12 pm, Building 510 Room 2-160 Hosted by: Amarjit Soni Condensed-Matter Physics & Materials Science Seminar 1:30 pm, ISB, Bldg. 734, Conf. Rm. 201 (upstairs) Hosted by: Jonathan Rameau Optical excitations in solid materials decay typically on femto- to picosecond time scales due to interactions which lead to a redistribution of the excess energy among the electronic, the lattice, and the spin subsystem, before final dissipation. We perform pump-probe experiments in order to analyze these excitations and the action they generate through their relaxation directly in the time domain. In this talk time- and angle-resolved photoemission (tr-ARPES) results which probe the excited state with energy and momentum sensitivity on complex materials like charge density wave compounds [1] and high temperature superconductors [2,3] will be discussed. In the prototype charge density wave material RTe3 (R=Ho, Tb, Dy) we obtained a momentum dependent analysis of the time dependent gap function (k,t) which sheds lights on the amplitude mode and the interaction responsible for the charge density wave formation. In the iron based superconductor material BaFe2As2 the optical excitation induces oscillations in the chemical potential linked to the coherent A1g phonon which modulates the pnictogen height and electronic correlations. In the cuprates pump-induced changes are observed below and above Tc. We obtained evidence for considerable photo-doping effects based on transient changes in the Fermi momentum kF upon optical excitation. Remarkably, the observed changes follow predictions based on chemical doping, which suggests time- and angle-resolved photoemission as a novel method to differentially probe the Fermi surface of complex materials. [1] L. Rettig, J.-H. Chu, I. R. Fisher, U. Bovensiepen, M. Wolf, Faraday Discuss. 171, 1 (2014). [2] J. Rameau, S. Freutel, L. Rettig, I. Avigo, M. Ligges, Y. Yoshida, H. Eisaki, J. Schneeloch, R. D. Zhong, Z. J. Xu, G. D. Gu, P. D. Johnson, U. Bovensiepen, Phys. Rev. B 89, 115115 (2014). [3] L. X. Yang, G. Rohde, T. Rohwer, A. Stange, K. Hanff, C	21 No events scheduled
22 No events scheduled	23 Center for Functional Nanomaterials Seminar 10 am, CFN, Building 735, 1st floor, conference room B Hosted by: Chuck Black Center for Functional Nanomaterials Seminar Monday, February 23, 2015 10:00 a.m. Conference Room B Capillary instability of periodic polymer thin-film structures Zheng Zhang Department of Mechanical Engineering University of Colorado at Boulder In this talk, I will present the simultaneous capillary instability among periodic polymer lithographic structures. The first system is straight polymer stripes arranged in parallel with equal spacing and suspended atop an immiscible medium. Polystyrene (PS) and poly (methyl methacrylate) (PMMA) were used because of their immiscibility and well-characterized physical properties. When annealed at a temperature above the glass transition temperature of both component polymers, the stripes undulated and ruptured via capillary instability. We found that the PS-to-PMMA viscosity ratio and substrate confinement to be key factors that influenced the instability. The second system that I will show is suspended concentric PS rings. The rings ruptured upon annealing, with three possible types of phase correlation between neighboring rings. In the case of weak substrate confinement, the rings ruptured independently when they were sparsely distanced, but via an out-of-phase mode when packed closer. If the substrate confinement was strong, the rings would rupture via an in-phase mode, resulting in radially aligned droplets. The concentric ring geometry caused a competition between the phase correlation of neighboring rings and the kinetically favorable wavelength, yielding an intriguing, recursive surface pattern. This frustrated pattern formation behavior was accounted for by a scaling analysis. Our experiments can serve as a basis for correlated capillary instability among curved objects, which can be a powerful tool for creating unique surface patterns. Host: Charles Entrepreneurs Networking Event 5 pm, Brookhaven Center Hosted by: Christine Scaffidi A panel of three experts will review briefly three new Supreme Court decisions which have resulted in the US Patent Office issuing guidelines which are having a significant impact on the prosecution of patent applications as they relate to what is patentable subject matter.	24 Nuclear Physics Seminar 11 am, Small Seminar Room, Bldg. 510 Hosted by: Jiangyong Jia We perform a Principal Component Analysis (PCA) of $v_3(p_T)$ in event-by-event hydrodynamic simulations of Pb+Pb collisions at the LHC. The PCA procedure identifies two dominant contributions to the two particle correlation function, which together capture 99.9\% of the squared variance. We find that the subleading flow (which is the largest source of flow factorization breaking in hydrodynamics) is predominantly a response to the radial excitations of a third-order eccentricity. We present a systematic study of the hydrodynamic response to these radial excitations in 2+1D viscous hydrodynamics. Finally, we construct a good geometrical predictor for the orientation angle and magnitude of the leading and subleading flows using two Fourier modes of the initial geometry.	25 Physics Workshop 9 am, Large Seminar Room, Bldg. 510 Hosted by: Rob Pisarski This is the third workshop for a visiting program between the Japanese Society for the Promotion of Science and the Nuclear, Lattice Gauge, and High Energy Theory groups at Brookhaven. The grant, termed a Brain circulation program, is between Dr. Tetsuo Hatsuda, Chief Scientist at RIKEN, and his colleagues from RIKEN, Kyoto University, and Tsukuba University, and is designed to allow young scientists to visit BNL. In this workshop young scientists from both Japan and BNL will discuss their work. Hospitality Coffee & Playgroup Event 10 am, Recreation Hall, Bldg. 317 Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so. High-Energy Physics & RIKEN Theory Seminar 2 pm, Small Seminar Room, Bldg. 510 Hosted by: Sally Dawson Brookhaven Lecture 4 pm, Berkner Hall Auditorium Hosted by: Thomas Watson	26 Special Nuclear Physics/HEP Seminar 10 am, Building 510 Room 2-160 Hosted by: Thomas Ulrich Quantum chromodynamics has been extremely successful in describing a multitude of high-energy experiments with aid from the use of universal parton distribution functions. PDFs for the free proton are fairly well-constrained by experiment, but nuclear PDFs require elaboration. Three ingredients are necessary to obtain a nuclear PDF theoretically: (1) an account of the nuclear momentum distribution that includes the latest results regarding short range correlations; (2) a model of how nucleons immersed in the nuclear medium are modified at a quark-gluon level; and (3) the application of QCD evolution to connect the low momentum resolution scales at which the first two ingredients are obtained to the high momentum transfer scales relevant to the LHC and the EIC. These three ingredients will be described in detail, and an example of their application to proton-nucleus collisions at LHC energies will be provided. English for Speakers of Other Languages (ESOL) Event 12 pm, Chemistry Building 555, 3rd Floor, Room 300 Hosted by: T. Sampieri Center for Functional Nanomaterials Seminar 1 pm, CFN, Building 735, Conference Room B Hosted by: Qin Wu In this talk, I will show that a subsystem formulation of DFT can simplify both the theoretical framework and the computational effort for calculating the electronic structure of condensed phase systems. I claim that the naturally subsystem-like form of molecular aggregates (including molecules at surfaces) makes subsystem DFT a better descriptor of the underlying physics than regular DFT of the supersystem. This claim will be sustained by two examples. The first one is a novel van der Waals DFT theory based on the subsystem DFT approach which addresses several drawbacks of common vdW functionals as well as SAPT-type formulations �" it is theoretically exact and amenable to sensible approximations. The second example involves the analysis of the electronic spectra of molecular chromophores embedded in a molecular environment. It uncovers interactions between the chromophore and its environment which we term "holographic spectrum". Computational evidence to the claims will be provided, and it is obtained from a local version of the Amsterdam Density Functional software and a brand new implementation of subsystem DFT (both ground and excited states) in the plane wave code Quantum-Espresso. I will discuss several pilot calculations which include molecules at surfaces and layered systems. Recent references from the Pavanello group: [1] On the subsystem formulation of linear-response time-dependent DFT, J. Chem. Phys. 138 , 204118 (2013) [2] Subsystem real-time Time Dependent Density Functional Theory, J. Chem. Phys. submitted, arXiv:1502.01324 [3] Periodic subsystem density-functional theory, J. Chem. Phys. 141 , 174101 (2014) [4] FDE-vdW: A van der Waals inclusive subsystem density-functional theory, J. Chem. Phys. 141 , 044127 (2014) [5] Quantifying Environmental Effects on the Decay of Hole Transfer Couplings in Biosystems, J. Chem. Theory Comput., 2014, 10 (6), pp 2546��"2556 Particle Physics Seminar 3 pm, Small Seminar Room, Bldg. 510 Hosted by: Elizabeth Worcester I will present the first cross section measurements for charged current coherent pion production by neutrinos and antineutrinos on argon. These measurements are performed using the ArgoNeuT detector exposed to the NuMI beam at Fermilab. The results are in a good agreement with the theoretical predictions from GENIE and NuWro.	27 Particle Physics Seminar 11 am, Small Seminar Room, Bldg. 510 Hosted by: Ketevi A. Assamagan The H->ZZ(*)4l decay channel is the experimentally cleanest signature for the Higgs boson production at the LHC (CERN). The selection of the candidates, the data driven background estimation methods and the property measurements of the Higgs boson are presented using the ATLAS Run-I data. Prospect expectations are explored for the High Luminosity LHC (HL-LHC) scenario. HET/BNL Lunch Time Talk 12 pm, Building 510 Room 2-160 Hosted by: Amarjit Soni C-AD Accelerator Physics Seminar 4 pm, Bldg 911B, Large Conf. Rm., Rm A202 "Through direct and lattice independent tracking we show how the polarization aperture can be greatly expanded by modifying the 453-nu intrinsic spin resonance next to the main 393+nu resonance. We also explore the conjecture that the structure of the aperture is related to the area of the parametric resonance regions based on the new formulation for the T-BMT equation (given in my recent PRSTAB paper http://journals.aps.org/prstab/pdf/10.110/PhysRevSTAB.18.014001) and how this might explain some of the apparent structure in the polarization profile measurements."	28 No events scheduled

MAR

4

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, March 4, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAR

4

Wednesday

HET/RIKEN Seminar

"The Galactic Center Gamma-ray Excess: Have We Started to See Dark Matter"

Presented by Samuel McDermott, Stony Brook University

2 pm, Building 510 SSR

Wednesday, March 4, 2015, 2:00 pm

Hosted by: Sally Dawson
MAR

10

Tuesday

Career Workshop

"CARE 2015: Career Advancement in a Research Environment"

Presented by Various speakers from different scientific backgro, BNL, SBU and surrounding institutions

8:30 am, Brookhaven Center

Tuesday, March 10, 2015, 8:30 am

Hosted by: Christina Swinson

Open to Stony Brook and BNL early career scientists and Postdocs, CARE 2015 will focus on career development. The workshop will explore the options available to early-career scientists in addition to the traditional R&D and academic pathways. Invited speakers will describe their career paths and discuss the special requirements and planning involved in achieving their goals. An interactive session will guide participants in developing prototype Individual Development Plans (IDPs).
MAR

10

Tuesday

Center for Functional Nanomaterials Colloquium

"The bulk photovoltaic effect in polar oxides for robust and efficient solar energy harvesting"

Presented by Andrew M. Rappe, University of Pennsylvania

11 am, Bldg 735, Seminar Room 2nd Floor

Tuesday, March 10, 2015, 11:00 am

Hosted by: Deyu Lu

Solar energy is the most promising source of renewable, clean energy to replace the current reliance on fossil fuels. Ferroelectric (FE) materials have recently attracted increased attention as a candidate class of materials for use in photovoltaic devices. Their strong inversion symmetry breaking due to spontaneous polarization allows for excited carrier separation by the bulk of the material and voltages higher than the band gap (Eg), which may allow efficiencies beyond the Shockley-Queisser limit. Ferroelectric oxides are also robust and can be fabricated using low cost methods such as sol-gel thin film deposition and sputtering. Recent work has shown how a decrease in ferroelectric layer thickness and judicious engineering of domain structures and FE-electrode interfaces can dramatically increase the current harvested from FE absorber materials. Further improvements have been blocked by the wide band gaps (Eg =2.7-4 eV) of FE oxides, which allow the use of only 8-20% of the solar spectrum and drastically reduce the upper limit of photovoltaic efficiency. In this talk, I will discuss new insight into the bulk photovoltaic effect, and materials design to enhance the photovoltaic efficiency. We calculate from first principles the current arising from the "shift current" mechanism, and demonstrate that it quantitatively explains the observed current. Then, we analyze the electronic features that lead to strong photovoltaic effects. Finally, we present new oxides that are strongly polar yet have band gaps in the visible range, offering prospects for greatly enhanced bulk photovoltaic effects. Please note: If anyone would like to schedule a meeting with Dr. Rappe, please contact Deyu Lu (dlu@bnl.gov)
MAR

10

Tuesday

Sustainable Energy Technologies Seminar

"Surfactant Free Synthesis of Plasmonic Nanoparticles and Their Application in Optical Detection of Explosives and Ions"

Presented by Devika Sil, Temple University, Philadelphia

11 am, ISB 734 2nd Floor Seminar Room 201

Tuesday, March 10, 2015, 11:00 am

Hosted by: Matthew Eisaman

The localized surface plasmon resonance (LSPR), arising due to the collective oscillation of free electrons in metal nanoparticles, is a sensitive probe of the nanostructure and its surrounding dielectric medium. Synthetic strategies for developing surfactant free nanoparticles providing direct access to the metallic surface that harvest the localized surface plasmons will be discussed first followed by the applications. It is well known that the hot carriers generated as a result of plasmonic excitation can participate and catalyze chemical reactions. One such reaction is the dissociation of hydrogen. By the virtue of plasmonic excitation, an inert metal like Au can become reactive enough to support the dissociation of hydrogen at room temperature, thereby making it possible to optically detect this explosive gas.1 The mechanism of sensing is still not well understood. However, a potential hypothesis is that the dissociation of hydrogen may lead to the formation of a metastable gold hydride with optical properties distinct from the initial Au nanostructures, causing a reversible increase in transmission and blue shift in LSPR. It will also be shown that by tracking the LSPR of bare Au nanoparticles grown on a substrate, the adsorption of halide ions on Au can be detected exclusively. The shift in LSPR frequency is attributed to changes in electron density rather than the morphology of the nanostructures, which is often the case.
MAR

11

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, March 11, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAR

11

Wednesday

BSA Noon Recital

"Solomiya Ivakhiv and Di Wu to Perform at Brookhaven Lab, March 11"

12 pm, Berkner Hall Auditorium

Wednesday, March 11, 2015, 12:00 pm

Hosted by: BSA

Pianist Di Wu and violinist Solomiya Ivakhiv will perform in concert at the U.S. Department of Energy's Brookhaven National Laboratory on Wednesday, March 11, at noon in Berkner Hall. Sponsored by Brookhaven Science Associates (BSA), the event is free and open to the public. All visitors to the Laboratory 16 and older must bring a photo I.D.
MAR

11

Wednesday

BERA/QOL/Recreation

"Tax Overview Workshop for Visiting Foreign Nationals"

12 pm, Bldg 400, RSB # 1 & 2

Wednesday, March 11, 2015, 12:00 pm

Contact the Recreation Office, ext 2873 to register. Light refreshments will be served.
MAR

12

Thursday

Community Advisory Council Meeting

"Open to the Public"

6:30 pm, Berkner Hall, Room B

Thursday, March 12, 2015, 6:30 pm
MAR

13

Friday

Nuclear Physics & RIKEN Theory Seminar

"Hydrodynamic transport coefficients for the non-conformal quark-gluon plasma from holography"

Presented by Jorge Noronha, Sao Paulo University

2 pm, Small Seminar Room, Bldg. 510

Friday, March 13, 2015, 2:00 pm

Hosted by: Soeren Schlichting

: In this talk we shall present holographic formulas for the transport coefficients κ and τπ present in the second-order derivative expansion of relativistic hydrodynamics in curved spacetime associated with a non-conformal strongly coupled plasma described holographically by an Einstein+Scalar action in the bulk. These coefficients are computed as functions of the temperature in a bottom-up non-conformal model that is tuned to reproduce lattice QCD thermodynamics at zero baryon chemical potential. We directly compute, besides the speed of sound, 6 other transport coefficients that appear at second-order in the derivative expansion. We also give an estimate for the temperature dependence of 11 other transport coefficients taking into account the simplest contribution from non-conformal effects that appear near the QCD crossover phase transition. Using these results, we construct an Israel-Stewart-like theory in flat spacetime containing 13 of these 17 transport coefficients that should be suitable for phenomenological applications in the context of numerical hydrodynamic simulations of the strongly-coupled, non-conformal quark-gluon plasma. Using several different approximations, we give parametrizations for the temperature dependence of all the second-order transport coefficients that appear in this theory in a format that can be easily implemented in existing numerical hydrodynamic codes
MAR

18

Wednesday

Office of Educational Programs Event

"MagLev Competition"

8:30 am, Brookhaven Center

Wednesday, March 18, 2015, 8:30 am
MAR

18

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, March 18, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAR

18

Wednesday

HET/RIKEN seminar

"TBA"

Presented by Luca Vecchi, University of Maryland

2 pm, Small Seminar Room, Bldg. 510

Wednesday, March 18, 2015, 2:00 pm

Hosted by: Chien-Yi Chen
MAR

18

Wednesday

HET/RIKEN seminar

"TBA"

Presented by Can Kilic, The University of Texas, Austin

2 pm, Small Seminar Room, Bldg. 510

Wednesday, March 18, 2015, 2:00 pm
MAR

20

Friday

Joint NT/RIKEN Seminar

"Flow-like behavior in small systems — Multi-parton interactions and color reconnection effects at the LHC"

Presented by Antonio Ortiz Velasquez, National Autonomous University of Mexico

2 pm, Small Seminar Room, Bldg. 510

Friday, March 20, 2015, 2:00 pm

Hosted by: Soeren Schlichting

Collectivity in high multiplicity pp and p-Pb collisions is the most unexpected discovery at the LHC, its origin is still an open question. In heavy ion collisions, collectivity is attributed to final state effects due to the presence of a hot and dense QCD medium, and it is well described by viscous hydrodynamical calculations with fluctuating initial state geometries. Surprisingly, calculations which employ hydrodynamics reproduce qualitatively well the features of p-Pb data, but, the applicability of hydro in small systems faces conceptual problems. This is not the case of other approaches which do not require a medium to be formed and also are able to reproduce qualitatively well some features of data. In this talk it will be shown that multi-parton interactions and color reconnection (CR) produce flow-like effects in high multiplicity pp collisions. A study of the transverse momentum (pT) distribution of identified hadrons as a function of the event multiplicity will be presented. This comprises studies of the average pT vs hadron mass and number of constituent quarks, and a pT differential study using the Boltzmann-Gibbs Blast-Wave model. A comparison between hydro and color reconnection calculations will be presented. In this context, the results from the same study using LHC data (pp, p-Pb and Pb-Pb collisions) will be discussed.
MAR

27

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Chris Kelly, RBRC

12 pm, Building 510 Room 2-160

Friday, March 27, 2015, 12:00 pm

Hosted by: Amarjit Soni
MAR

28

Saturday

Office of Educational Programs Event

"Regional Bridge Contest"

9 am, Science Learning Center

Saturday, March 28, 2015, 9:00 am

Hosted by: Susan Frank
APR

1

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, April 1, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
APR

2

Thursday

Particle Physics Seminar

"Neutrino Oscillations with IceCube"

Presented by Tyce DeYoung, Michigan State University

3 pm, Small Seminar Room, Bldg. 510

Thursday, April 2, 2015, 3:00 pm

Hosted by: Elizabeth Worcester

The IceCube Neutrino Observatory is the world's largest neutrino detector. Although designed to detect TeV �" PeV scale neutrinos from astrophysical accelerators, IceCube's DeepCore infill array permits searches for dark matter and measurements of neutrino oscillations in the 10-100 GeV range. The most recent measurements of muon neutrino disappearance with IceCube DeepCore will be presented, and prospects for future neutrino physics measurements with IceCube and the proposed PINGU array will be discussed
APR

3

Friday

Particle Physics Seminar

"Measurement of the pion polarizability at COMPASS"

Presented by Jan Friedrich, Technische Universität München, Germany

11 am, Small Seminar Room, Bldg. 510

Friday, April 3, 2015, 11:00 am

Hosted by: Ketevi A. Assamagan
APR

3

Friday

Nuclear Theory/RIKEN seminar

"Gravitational collapse, holography and hydrodynamics in extreme conditions"

Presented by Paul Chesler, Harvard University

2 pm, Small Seminar Room, Bldg. 510

Friday, April 3, 2015, 2:00 pm

Hosted by: Soeren Schlichting

A remarkable observation from RHIC and the LHC is that the quark-gluon plasma produced in heavy-ion collisions behaves as a strongly coupled and nearly ideal liquid. Data also suggests that the debris produced by proton-nucleus collisions can also behave as a liquid. Understanding the dynamics responsible for the rapid equilibration of such tiny droplets is an outstanding problem. In recent years holography has emerged as a powerful tool to study non-equilibrium phenomena, mapping challenging quantum dynamics onto the classical dynamics of gravitational fields in one higher dimension. In the dual gravitational description the process of quark-gluon plasma formation and equilibration maps onto the process of gravitational collapse and black hole formation. I will describe how one can apply techniques and lessons learned from numerical relativity to holography and present recent work on holographic models of high energy collisions and the applicability of hydrodynamics to tiny droplets of quark-gluon plasma.
APR

8

Wednesday

HET/RIKEN seminar

"TBA"

Presented by Tongyan Lin, University of Chicago

2 pm, Small Seminar Room, Bldg. 510

Wednesday, April 8, 2015, 2:00 pm
APR

10

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Michael Savastio, Cornell

12 pm, Building 510 Room 2-95

Friday, April 10, 2015, 12:00 pm

Hosted by: Amarjit Soni
APR

10

Friday

Nuclear Theory/RIKEN seminar

"TBA"

Presented by Michael Heller, Perimeter Institute

2 pm, Small Seminar Room, Bldg. 510

Friday, April 10, 2015, 2:00 pm

Hosted by: Soeren Schlichting
APR

15

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, April 15, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
APR

17

Friday

HET/ATLAS JOINT LUNCH SEMINAR

"TBA"

Presented by Ketevi Assamagan, BNL

12 pm, Building 510 Room 2-160

Friday, April 17, 2015, 12:00 pm

Hosted by: Amarjit Soni
APR

17

Friday

Nuclear Theory/RIKEN seminar

"TBA"

Presented by Miklos Gyulassy, Columbia University

2 pm, Small Seminar Room, Bldg. 510

Friday, April 17, 2015, 2:00 pm

Hosted by: Soeren Schlichting
APR

22

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, April 22, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
APR

24

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Bhupal Dev, Manchester

12 pm, Building 510 Room 2-160

Friday, April 24, 2015, 12:00 pm

Hosted by: Amarjit Soni
APR

28

Tuesday

BSA Distinguished Lecture

"Topic: Climate Change; Title TBD"

Presented by Gavin Schmidt, NANA Goddard Institute for Space Studies

4 pm, Berkner Hall Auditorium

Tuesday, April 28, 2015, 4:00 pm

Hosted by: Peter Wanderer
APR

29

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, April 29, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAY

1

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Michael Geller, Technion

12 pm, Building 510 Room 2-160

Friday, May 1, 2015, 12:00 pm

Hosted by: Amarjit Soni
MAY

6

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, May 6, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAY

8

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Ethan Neil, RBRC/Colorado

12 pm, Building 510 Room 2-95

Friday, May 8, 2015, 12:00 pm

Hosted by: Amarjit Soni
MAY

13

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, May 13, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAY

13

Wednesday

HET/RIKEN seminar

"TBA"

Presented by Gustavo Burdman, IAS/University of São Paulo

2 pm, Small Seminar Room, Bldg. 510

Wednesday, May 13, 2015, 2:00 pm

Hosted by: CheinYi Chen
MAY

20

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, May 20, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAY

22

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Fedor Besrukov, RBRC/Connecticut

12 pm, Building 510 Room 2-160

Friday, May 22, 2015, 12:00 pm

Hosted by: Amarjit Soni
MAY

27

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, May 27, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
MAY

29

Friday

HET/BNL Lunch Time Talk

"TBA"

Presented by Sam McDermott, YITP

12 pm, Building 510 Room 2-160

Friday, May 29, 2015, 12:00 pm

Hosted by: Amarjit Soni
MAY

31

Sunday

CFN Proposal Deadline

"CFN Proposal Deadline for September-December Cycle 2015"

11:45 pm, CFN

Sunday, May 31, 2015, 11:45 pm
JUN

3

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, June 3, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
JUN

10

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, June 10, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
JUN

17

Wednesday

Hospitality Coffee & Playgroup Event

"Hospitality Coffee & Playgroup"

10 am, Recreation Hall, Bldg. 317

Wednesday, June 17, 2015, 10:00 am

Play group will sometimes schedule different types of play dates at various venues. To see the schedule and join, please use https://www.facebook.com/groups/241354149387588/#!/groups/241354149387588/ and open 'BNL Spouses and Kids' and sign in. You do need an established Facebook account in order to do so.
JUL

30

Thursday

Colloquium

"Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS XII)"

8 am, Berkner Hall, Room B

Thursday, July 30, 2015, 8:00 am

Hosted by: Ernie Lewis
JUL

31

Friday

Colloquium

"Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS XII)"

8 am, Berkner Hall, Room B

Friday, July 31, 2015, 8:00 am

Hosted by: Ernie Lewis
SEP

30

Wednesday

CFN Proposal Deadline

"CFN Proposal Deadline for January-April Cycle 2016"

11:45 pm, CFN

Wednesday, September 30, 2015, 11:45 pm
OCT

12

Monday

Workshop

"HEPIX"

9 am, Large Seminar Room, Bldg. 510

Monday, October 12, 2015, 9:00 am

Hosted by: Tony Wong
OCT

13

Tuesday

Workshop

"HEPIX"

9 am, Hamilton Seminar Room, Bldg. 555

Tuesday, October 13, 2015, 9:00 am

Hosted by: Tony Wong
OCT

14

Wednesday

Workshop

"HEPIX"

9 am, Large Seminar Room, Bldg. 510

Wednesday, October 14, 2015, 9:00 am

Hosted by: Tony Wong
OCT

15

Thursday

Workshop

"HEPIX"

9 am, Large Seminar Room, Bldg. 510

Thursday, October 15, 2015, 9:00 am

Hosted by: Tony Wong
OCT

16

Friday

Workshop

"HEPIX"

9 am, Large Seminar Room, Bldg. 510

Friday, October 16, 2015, 9:00 am

Hosted by: Tony Wong

Site Navigation

General Information

Scientific Departments