Hosted by: Hui Wang

RHIC science has entered an era where the goal is to make quantitative statements about the evolution and properties of the super-hadronic matter created in high-energy heavy-ion collisions. Given the heterogenous nature of the RHIC and LHC heavy-ion data sets, the significant uncertainties to the theoretical models, and the complex intertwined dependencies between model parameters and observables, stating conclusions with meaningful uncertainties represents a major challenge. I will present results from the MADAI collaboration, where we have constructed a statistical infrastructure for addressing exactly such problems and applied it to a subset of soft observables from 100A GeV + 100A GeV Au + Au collisions. The results from this pilot project are promising and the techniques should be extendable to larger data sets and to more flexible models with greater numbers of parameters.

Hosted by: Robert Harrison

Plasma-Material Interface (PMI) mixes materials of the two worlds, creating a dynamical surface which is one of the most challenging areas of multidisciplinary science, with many fundamental processes and synergies. We present the experimentally validated atomistic theory and computation for studying the dynamics of the creation and evolution of the PMI under irradiation by atoms and molecules at carbon, lithiated carbon and tungsten, as well as the emerging elastic and inelastic processes, in particular retention and sputtering chemistry. Recent work with lithium coatings deposited on a variety of metallic and graphitic surfaces, in a number of tokamak fusion machines around the world, has provided evidence of the sensitive dependence plasma behavior has on these ultra-thin deposited films. Our computer simulations, done in collaboration with Japanese and French scientists, and validated by in-situ experiments at Purdue University and at NSTX of PPPL have elucidated roles of lithium in carbon walls to the recycling of the plasma hydrogen. We performed quantum-classical atomistic calculations on many thousands of random trajectories to clarify the interplay of lithium and oxygen in amorphous carbon. We show that the presence of oxygen in the surface plays the key role in the increased uptake chemistry and suppression of erosion, while lithium has a decisive role in achieving high concentrations of oxygen in the upper layers of the surface upon bombardment by deuterium. D atoms preferentially bind with O and C-O when there is a comparable amount of oxygen to Li at surface. This finding explains a number of previously puzzling laboratory and reactor-based experimental results obtained over the last decade, having ramifications that go well beyond fusion.

Hosted by: Ivan Bozovic

The talk will review work at the division of quantum device physics at Chalmers. Quantum, limited dimensional devices can be used to study fundamental physical effect. At Chalmers, microwave pumped SQUID (Josephson inductance) terminated transmission lines have been used to study dynamical Casimir effects, i.e., vacuum fluctuations parametrically amplified to photons at half the pumping frequency. An imaginary component to the energy gap at node directions have been detected in YBCO by a single electron transistor. YBCO nanostructures can also be used to fabricate low noise SQUIDs. One use may be to study brain rhythms. Quantum Hall resistance normals have been realized in SiC based graphene. Their resolution is of the order of one part in ten-to-the-ten, and they promise to be the resistance standards in the future.

Hosted by: Rob Pisarski

After reviewing the basic properties of jets produced in elementary collisions, and how these can be understood from quantum chromodynamics (QCD), I shall show how the QCD cascade is modified by the presence of a quark-gluon plasma. Coherence effects that determine the most salient features of the QCD cascade in vacuum are suppressed, and the in-medium cascade exhibit turbulent behavior. Interestingly, the same self-similar behavior that characterizes this turbulent behavior shows up in the late stage of the "bottom-up" scenario for quark-gluon plasma thermalization.

Hosted by: Ignace Jarrige

Inelastic scattering measurements performed with resonance-tuned X-rays can provide a unique window into electron behavior at a femtosecond time scale and atomic length scale. Experiments of this type have a broad range of applications, granting key insight into the energetics of complex chemical environments (e.g. charging battery electrodes) and correlated electron systems (e.g. high temperature superconductors). I will discuss current efforts to turn the phase and energy profile of scattered light into a time-resolved picture of electron dynamics in quantum materials. The talk will review how many-body systems respond when impacted by resonant X-rays, and how scattered photons provide a fingerprint of important material properties such as atomic valence and spin states. Throughout the talk, I will touch on the long term trajectory of research, and ways in which the rapid ongoing development of spectrometers and X-ray light sources is opening exploration into new realms of fundamental physics.

Hosted by: Klaus Attenkofer and Sanjit Ghose

Hosted by: Amarjit Soni

Hosted by: Ilan Ben-Zvi

"MaRIE stands for Matter-Radiation Interactions in Extremes. As ultimately envisioned, the MaRIE facility as a whole will be capable of applying several in situ diagnostics to observe transient phenomena at high resolution, in real time. These include both proton radiography from the existing LANSCE accelerator, and X-ray and electron radiography from the MaRIE 1.0 XFEL. MaRIE 1.0 will be the world's first very-hard (40 kV) x-ray free-electron laser. Designed to operate with a beam energy of 12 GeV, the MaRIE linac will require performance currently beyond state-of-the-art in most aspects of its design: beam source, linac structures, bunch compression, bunch train, and the diagnostics required to monitor all of the above. MaRIE presents challenges not only in terms of achieving the basic performance requirements, but also to the modeling and simulation tools we use to design such a machine. This talk will review the baseline MaRIE 1.0 requirements and present the current status of the baseline accelerator design. Approaches to addressing the design and modeling challenges will be presented, along with broader-ranging potential alternatives."

Hosted by: Suffolk County Office of Women's Services

Panel Discussion with Christina Swinson of BWIS, Q & A, light breakfast served. Equal Pay Day The Annual Equal Pay Day Event is held to bring awareness statewide about the inequality in pay between men and women. Over fifty years ago the United States Congress passed the Equal Pay Act, yet women who work full time still earn just 77 cents for every dollar earned by a man. Every year EPW chapters plan an event that brings awareness to this inequality and participate in activities that make an impact on achieving change. Examples of Equal Pay Day and local projects.

Hosted by: Oleg Gang

Coffee and cookies at 10:45 am Center for Functional Nanomaterials Colloquium Series Professor Paul V. Braun Department of Materials Science and Engineering University of Illinois at Urbana-Champaign Soft Matter Enhanced Electrochemical Energy Storage and 3D Photonic Crystals Tuesday, April 8, 2014 11:00 a.m. Seminar Room, 2nd Fl. Over the past decade, the sophistication of self and directed-assembly approaches for functional composite structures has increased dramatically, however, application of such structures in real-world systems has remained largely elusive, in part because such structures almost always contain finite defect densities. The storing, generating and harvesting of photons and electrons presents a unique opportunity for self-assembled composite materials. These applications are not only generally much more defect tolerant than for example self-assembled computational electronics, but also for these areas to make a substantive impact on the world energy situation, they must be produced in exceptionally large volume. In my talk, I will attempt to capture the state-of-the-art in highly functional self-assembled three-dimensional composites for energy harvesting and storage illustrated with examples from both my research and other groups with a particular focus on high charge and discharge rate nanostructured electrochemical energy storage systems (batteries and supercapacitors), and photonic crystals which exhibit unprecedented control over the absorption and emission of light (lasers, LEDs, and solar cells). Host: Oleg Gang

Hosted by: Michael Thorn

Weight Watchers "Weight Watchers" Tuesday, March 4, 2014, Large Conference Room, Bldg. 490 Hosted by: michael Thorn On Site Weight Watchers Meetings!! Getting started with Weight Watchers is now Simpler then ever with Simple Start. Come on in and learn about our straight forward do-able 2 week started plan with delicious meal ideas and a great new app to get you started losing weight and on the path to long term success. Weight Watchers today at 12:15 in the Conference Room #490. If you are not already a member check out a meeting for free and hear all about Simple Start! Take advantage of the convenience of On-Site weekly meetings every Tuesday. Time for a new beginning.

Hosted by: Bill Morse

We all know that High Energy Physics research in the U.S. is funded almost entirely by the federal government. Our field competes for federal dollars with colleagues as close as Nuclear Physics, and as far removed as the National Park Service or School Lunch Program. Just how does our budget get put together, and by whom? What do we do, specifically as a User community, to advocate for our research program to the people who make the funding decisions for our field? Do we have any real, positive effect? And finally, how are the answers to these questions impacted by the current P5 process?

To join Play Group, go to: meetup.com/BNL-playgroup Tours, snacks, information and general socializing! All are welcome!

Water oxidation to oxygen in nature's photosynthesis is the source of most of the energy we use today. It is also anticipated to be (and it has to be) the source of most of the energy we use in the future through artificial photosynthesis. For the latter, one of the main challenges is the development of efficient and robust water oxidation catalysts. In this presentation, water oxidation catalysis by ruthenium complexes with two types of tetradentate ligands (2,2'-bipyridine-6,6'-dicarboxylic acid,bda and 2,2'-bipyridine-6,6'-diphosphonic acid, bpa) will be discussed. These catalysts oxidize water through seven-coordinate intermediates but follow different mechanisms. Water oxidation catalysts of the type [Ru(bda)(L)2] (L is 4-picoline (pic), or isoquinoline (isq)), as well as their mechanism for water oxidation, have been reported by Sun and coworkers. Nevertheless, unlikely 20- and 19-electron intermediates were proposed in the catalytic cycle. Here we revisit the mechanism for water oxidation by these catalysts based on electrochemistry, X-ray crystallography and well established inorganic and organometallic chemistry principles. In addition, a comparison between the two types of complexes in solution and bound to metal-oxide electrodes will be made with respect to catalytic performance. This comparison sheds light on the mechanism by which these complexes oxidize water in a true solar cell device configuration.

Monthly meeting of the Brookhaven Women in Science (BWIS) board. All BWIS members and affiliates are welcome to attend.

Pianist Di Wu, praised in the Wall Street Journal as "most mature and sensitive," who charms audiences with her "charisma, steely technique, and keen musical intelligence" (Philadelphia Inquirer) and her "fire and authority" (Washington Post), will perform at the U.S. Department of Energy's Brookhaven National Laboratory on Wednesday, April 9, at noon in Berkner Hall. Sponsored by Brookhaven Science Associates, the concert is free and open to the public. All visitors to the Laboratory age 16 and older must bring a photo I.D.

Hosted by: Hooman Davoudiasl

"I will first analytically show a simple, yet subtle "invariance" of two-body decay kinematics for the case of a massless daughter and a mother particle which is unpolarized and has a generic boost distribution in the laboratory frame. Namely, the laboratory frame energy distribution of the massless decay product has a peak, whose location is identical to the (fixed) energy of that particle in the rest frame of the corresponding mother particle. As a proof of principle of the usefulness of this observation, I will then apply it for measuring the mass of the top quark at the LHC, using simulated data (including experimental effects). Finally, I will show how it can be used to measure all the superpartner masses in a cascade decay chain of the gluino."

Among the future hopes for high energy nuclear physics is the construction of an Electron-Ion Collider or EIC. BNL has developed detailed plans for the RHIC machine to evolve into the EIC (locally called eRHIC) by the addition of an electron ring. For the past several years, BNL has hosted an EIC R&D program targeted at addressing the technology needs for the EIC. I will report on the so-called "Tracking Consortium" work with particular emphasis on the compact RICH. The compact RICH uses CsI-coated Gas-Electron-Multipliers (GEMs) along with a specialized thin-coating mirror for good reflectivity into the deep UV. Results from test beam will be presented along with thoughts for further work.

Retirement is not as far away as you think! Learn what you can do to help make your retirement dream come true on schedule. TIAA-CREF's workshop leaders will share retirement strategies that work: - Identify your "retirement vision," how much you'll need and when, so you can have the retirement you want - Define the simple steps to getting your finances on track to reach your ideal retirement - Learn the unique characteristics of retirement plans from 403(b) to IRAs to annuities and which work best for you Save your spot today! RSVP by calling 800 732-8353 Monday - Friday, 8 a.m. - 8 p.m. (ET) or schedule online at www.tiaa-cref.org/schedulenow Feel free to invite a colleague who'll enjoy this workshop! Bring your lunch, snacks and beverages will be served. "MONEY ISN'T A DESTINATION. It's how you reach one." A TIAA-CREF Financial Essentials Workshop Postcards From the Future: A Woman's Guide to Financially Ever After Consider the investment objectives, risks, charges and expenses carefully before investing. Please call 877 518-9161 or go to www.tiaa-cref.org/prospectus for a prospectus that contains this and other information. Read the prospectus carefully before investing. Join us on Thu, Apr 10, 2014 from 12:00 p.m. �" 1:00 p.m. at Berkner Hall - Room B as we share experiences, develop new investing skills and bring retirement into focus. Add it to your calendar now!

Hosted by: V. Litvinenko

"eRHIC is an ongoing vibrant project under a full blown study. In this presentation, the author will show studies of several beam dynamic issues - Dynamic aperture, FEL amplifier in CeC and possible CSR issue in arcs and chicanes. The author also presents possible solutions/remedies for those issues.

Hosted by: Antonio Checco and Ernie Lewis

Interfacial fluid mechanics, such as the dynamics of drops and bubbles, are important to problems in a variety of fields. For example, superhydrophobic surfaces can repel droplets, and bursting bubbles can disperse marine aerosols into the atmopshere. In this talk, I focus on two distinct phenomena: the reduction in contact time of a bouncing drop and the drainage of a viscous bubble prior to rupture. I will show both high-speed and time-lapse movies to highlight the phenomena, and I will discuss how experiments and mathematical modeling have given us insight into the underlying physics.

Hosted by: Klaus Attenkofer and Sanjit Ghose

Hosted by: Jonathan Rameau

In all known types of high-Tc superconductors - cuprate, Fe-based, and heavy fermion compounds - superconductivity emerges from the suppression of long range antiferromagnetic order. However, while superconductivity emerges from a Mott insulating state in the cuprates, the parent compounds of the Fe-based superconductors are metallic. Could a higher Tc be realized in compounds similar to the Fe-based superconductors if we start with a more correlated parent compound? We have synthesized single crystals of LaMnPO, which is isostructural to LaFeAsO, by the ux growth method. We find LaMnPO is an antiferromagnetic insulator that orders at TN = 375 K with a moment μ= 3.3 μB as T right arrow 0. I will present a combination of inelastic neutron scattering and optical transmission measurements and to show that antiferromagnetic exchange plays only a small role in formation of the charge gap. Instead, DFT+DMFT electronic structure calculations find Hunds coupling, thought to be responsible for correlations in the Fe-based compounds, is crucial for the formation of a charge gap in LaMnPO. Having identified LaMnPO as a more correlated version of the Fe-based superconductors, I will present our pressure and doping studies of LaMnPO. We find pressure drives LaMnPO toward a metallic and paramagnetic phase, but do not observe superconductivity. Doping studies are successful in reducing the activation gap in LaMnPO but the charge gap remains nearly unchanged.

We propose to place a stack of ultra thin transmission dynodes on top of a pixel chip, in vacuum. A single electron arriving at the first dynode will cause an electron avalanche on the pixel input pad. Due to the small source capacitance, a gain of 30 k of the dynode stack is sufficient to create a digital signal. The rise time of this signal could be ~ 2 ps. This single-electron sensitive device has therefore an excellent time resolution, and, due to the granularity of the pixel chip, a good 2D position resolution. When capped with a classical window + photocathode, a new photomultiplier is created. This Timed Photon Counter 'Tipsy' is single soft photon sensitive, has 2D position resolution defined by the granularity of the pixel chip, and a potential time resolution of ~ 2 ps per photon. Thanks to the granularity of the pixel chip, a high rate of multiple photon events results in an acceptable pixel occupancy. When capped with an electron emission membrane 'e-brane', the electron detector turns into Trixy: a tracker for charged particles (MIPs). The essential property of this membrane is the emission, with a high probability, of at least one electron after the passage of a MIP, at the crossing point of the MIPs' track and the membrane. We report on the progress in the development of the transmission dynode, and on theoretical aspects and simulations associated with the emission of (secondary) electrons.

Hosted by: Research Library

introduction and tips & tricks for using CRC series including structure searching, draw & combine structures, use interactive tables, sort & filter search results. Learn how to keep your research organized with personalized bookshelves, export to citation managers and track your research with saved search results and histories http://www.crcnetbase.com/

Topics to be Covered: Warning Signs of Financial; Physical or Mental Elder Abuse; Importance of a Power of Attorney & Health Care Proxy; How you should title bank accounts for the best protection Joint Account, Power of Attorney,Payable on death designations; Legal Recourse: Guardianship and Criminal Proceedings

Hosted by: Genda Gu

In this talk I will outline our groups efforts to generate and understand the high temperature superconducting proximity effect. Our focus is on interfaces between high Tc cuprates and topological insulators, in the hopes of observing and manipulating Majorana Fermions. I will also discuss the interest in these particles from both a fundamental and applied point of view. This has led us to develop the Mechanical Bonding processes that resulted in the first observation of high temperature superconductivity in Bi2Se3, Bi2Te3 and Graphite. I will also discuss recent efforts on the proximity effect in Bi2Te2Se where the fermi energy is in the gap. Interestingly in Bi2Te2Se/Bi2212 junctions we have observed a new zero bias conductance peak that does not couple to the orbital component, but only the spin.

Hosted by: Peter Petreczky

Despite the complexities of the nucleonic interactions in atomic nuclei, nuclei display remarkably simple patterns, and regularities as a function of neutron and proton number. Many of these patterns are associated with the emergence of collective behavior. Such behavior is largely the result of a competition between pairing interactions between like nucleons and proton-neutron (p-n) interactions. The Colloquium will survey the empirical behavior of nuclei and present ways to experimentally extract the strength of p-n interactions. The pivotal role of the latter in determining the former will then be discussed in terms of the correlations of p-n interaction strengths with the onset of collectivity and a newly recognized parallelism in the filling of proton and neutron orbits.

Hosted by: Association of Students and Postdocs

Come and meet your peers from BNL and Stony Brook. Enjoy good food and board games. Sandwiches, snacks, and drinks will be available.

Hosted by: Reinhold Mann

Understanding extreme events, such as hurricanes or forest fires, is of paramount importance because of their adverse impacts on human beings. Such events often propagate in space and time. Predicting��"even a few days in advance��"what locations will get affected by the event tracks and/or at what seasonal intensity these events are anticipated at those regions could benefit our society in many ways. Arguably, simulations from first principles, where underlying physics-based models are described by a system of equations, provide least reliable predictions for variables characterizing the dynamics of these extreme events. Data-driven model building has been recently emerging as a complementary approach that could learn the relationships between historically observed or simulated multiple, spatio-temporal ancillary variables and the dynamic behavior of extreme events of interest. While promising, the methodology for predictive learning from such complex data is still in its infancy. I will present a suit of dynamic networks-based methodologies for in-advance prediction of the dynamic tracks of emerging extreme events, for quantifying seasonal hurricane activity in North America, and for assessing rainfall activity in the Western Africa. These methods offer a superior predictive skill compared to any other methodology currently available in literature. In addition, various strategies for dealing with large-scale graphs will be presented.

Hosted by: Research Library

APS Publications - What's New with the Physical Review - Presented by Editors from the American Physical Society: Gene Sprouse, Editor in Chief; Daniel Kulp, Editorial Director; Ling Miao, Managing Editor, Physical Review X; and Julie Kim-Zajonz, Managing Editor, Physical Review Applied. A light lunch will be served.

Hosted by: Ian Lewis

Hosted by: Anze Slosar

I will review the BICEP results and summarize potential concerns one might have about their validity. I will then discuss the implications of large tensor modes for Early Universe phenomenology.

Hosted by: Allen Orville

Hosted by: Research Library

Ruth Wolfish from IEEE will share a sneak peek of what's new and what's coming this year. Her presentation will include IEEE content and features coming soon, 2014 IEEE journal titles and details, collaborations with other publishers, the new image applications, patent citations, and new library resources. For more information, please visit http://ieeexplore.ieee.org/Xplore/home.jsp

Hosted by: David P. Siddons

In this seminar we will start with a brief overview of 3 X-ray lithography beamlines and the microfabrication facility at CAMD. This will follow with the examples showing the research work involving X-ray LIGA (German acronym for Lithography-Electroplating-Molding) based fabrication of high aspect ratio (HAR) microstructures for micro-electro-mechanical systems (MEMS), BioMEMS and/or microfluidic applications. These will include fabrication of X-ray mask using different type of substrates (carbon, silicon nitride & beryllium), precision alignment of pre-patterned substrate to mask & patterning of positive (PMMA) and negative resist (SU-8/ MRX/ SUEX), electroplating of patterned structures and molding using the electroplated mold insert. Here, we will also discuss the fabrication of multi-level structures using both positive and negative resist on silicon, polymer or printed circuit board substrates. Additionally, in brief we will discuss micromilling to produce rapidly high quality mold inserts for molding microfluidic chips for biomedical, biochemical as well as biological applications; and nanostructured &/or biocompatible thin films (Parylene & Diamond-like Carbon) deposition and characterization.

Hosted by: Daniel Pitonyak

I will discuss how multi-particle flow cumulants can help to distinguish between various models of p+A interactions.

Hosted by: Vladimir Litvinenko

"In a muon accelerator complex, a target is bombarded by a multi-MW proton beam to produce pions. The pion beam is captured by a high field tapered solenoid and later decay into muons. The captured muon beam has a large 6D emittance which requires reduction in order to fit within the muon accelerator acceptance and provide the required luminosity during collision in the collider ring. An optimization study of the muon beam production and capture will be presented including the impact of the capture solenoid field on the transverse and longitudinal phase-space of the muon beam. Additionally a design study of the muon collider final ionization cooling channel utilizing high field solenoids will be discussed."

Hosted by: V. Litvinenko

"When a low energy electron beam crosses from top of a storage ring electron bunch, its coulomb force will kick a short slice from the core of the storage ring electron bunch. The separated slices, when passing through an undulator, will radiate ultra-short x-ray pulses at about 160fs. In the presentation, I will talk about the new approach to generate ultra-short x-ray pulses of the order of 100fs pulse length by electron beam slicing, and I will discuss our from start to end design of the electron beam slicing method in NSLS-II which includes the design of low energy bunch compressor, the design of the interaction of the linac bunch and the ring bunch and the separation design of the synchrotron radiation of the core and satellite."

Hosted by: BERA AAAG

Hosted by: Bjoern Schenke

We introduce a "renormalized entanglement entropy" which is intrinsically UV finite and is most sensitive to the degrees of freedom at the scale of the size R of the entangled region. We illustrated the power of this construction by showing that the qualitative behavior of the entanglement entropy for a non-Fermi liquid can be obtained by simple dimensional analysis. The functional dependence of the "renormalized entanglement entropy" on R can be interpreted as describing the renormalization group flow of the entanglement entropy with distance scale. The corresponding quantity for a spherical region in the vacuum, has some particularly interesting properties. For example in three (spacetime) dimensions, it is always monotonic along RG flows, and provides a measure of the number of degrees of freedom of a system at scale R.

Hosted by: Peter Petreczky

Hadron physics is unique at the forefront of science in tackling a problem whose fundamental degrees of freedom have never been directly observed. This presentation will describe some of the opportunities and challenges presented by the next decade — with an upgrade at Jefferson Lab, fixed target experiments at FermiLab and worldwide discussions about an electron ion collider.

Hosted by: BERA African American Affinity Group

Second Annual AAAG STEM Scholarship Reception. Five local high school students who plan to pursue STEM careers in college will be honored. Refreshments will be served. RSVP to Patrice Greenwood at greenwood@bnl.gov.