General Information

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Steps to Conduct Research at the Tandem

All guests must address the following items prior to coming to BNL to perform research at the Tandem.

Review Tandem's Capabilities

Review the informaiton (below) to ensure that the Tandem can meet your research needs.

Many other ions can be produced if required. We have to know, in advance, what ions and LETs you plan to use. In addition to the maximum energies, ranges and corresponding LETs listed below, lower energies are available for each ion. Charts for range and LET values as a function of energy can be seen by clickingon the links in the LET columns.

Flux can be in the range of 1 particle/cm2/sec
to greater than 1 · 106 particles/cm2/sec.
In Silicon
High LET Summary
Low LET Summary
In GaAs
High LET Summary
Low LET Summary
How To Use The Charts Below
  Mass Max
Energy
Surface
LET
Range Surface
LET
Range
Z Symbol AMU MeV MeV
AMU
MeV
mg/cm2
Microns MeV
mg/cm2
Microns
1 1H1 1.0079 28.75 28.52 0.0153 4550 0.0118 2610
3 3Li7 7.0160 57.2 8.15 0.369 390 0.273 240
5 5B11 11.0093 85.5 7.77 1.08 206.13 0.754 132.55
6 6C12 12.0000 99.6 8.30 1.46 180.43 1.03 115.82
8 8O16 15.9994 128 8.00 2.61 137.78 1.83 88.9
9 9F19 18.9954 142 7.48 3.51 118.88 2.45 77.12
12 12Mg24 23.9927 161 6.71 6.01 84.16 4.17 55.13
14 14Si28 28.0855 187 6.66 7.81 77.16 5.42 50.66
17 17Cl35 34.9688 212 6.06 11.5 64.41 7.93 42.71
20 20Ca40 39.9753 221 5.53 15.8 51.89 10.9 34.7
22 22Ti48 47.9479 232 4.84 19.6 47.8 13.4 32.36
24 24Cr52 51.9405 245 4.72 22.3 45.86 15.3 31.06
26 26Fe56 55.9349 259 4.63 25.1 44.24 17.2 30.09
28 28Ni58 57.9353 270 4.66 27.9 44.56 19.1 30.47
29 29Cu63 62.9296 277 4.40 30.1 42.06 20.6 28.79
32 32Ge72 71.9221 273 3.80 35.9 37.94 24.4 26.25
35 35Br81 80.9163 287 3.55 41.3 37.50 28.0 26.11
41 41Nb93 92.9060 300 3.23 47.5 36.32 32.1 25.4
47 47Ag107 106.9051 313 2.93 59.2 32.48 39.9 22.89
53 53I127 126.9045 322 2.54 66.9 32.54 45.0 23.17
79 79Au197 196.9665 337 1.71 84.6 29.21 56.2 21.18

Check Tandem's Availability

Check the schedule to ensure that beam time is available when you plan on using the Tandem.

Request Beam Time


Thank you. Your request has been submitted.

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Your Information

*Name (first & last)

*Phone

*Email

*Organization Affiliation

BNL Life / Guest Number

Purchasing Information

Purchasing Contact Name (first & last)

Purchasing Contact Phone

Purchasing Order Number

Run Information

*Purpose of Run Single Event Upset (SEU) Other

*Type of Research Proprietary Non-Proprietary

*General Description

Required Ions, Energies & LETs

Special Equipment Required

*Start Date and Time

*Beamtime Hours Needed

Additional Information

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Type the characters on the left into the text box on the right.

Submit Facility User Questionaire

Users are required to complete and return a Tandem Facility User Questionaire (.pdf) at least seven (7) days prior to the start of a run. If you do not already have one, selecting the previous link will get a copy of this form to your browser. You can print it, fill it out and fax it to (631) 344-4583. Alternatively you can call (631) 344-4581 and request a copy by fax or mail.

Submit Guest Registration

Individuals who do not hold a valid BNL ID who plan to come to Brookhaven are required to register in BNL's Guest Registration System (GIS) a minimum of 10 days in advance of their visit.

Pay close attention to the e-mail instructions you will receive after you register and after you submit the BNL arrival notification (separate step, below).

If you have an expired BNL ID, then email the Guest, User, Visitor Center, or call (631) 344-3333, to determine what is required to reactivate it.

Under certain circumstances, approvals can take from 30 to 90 days to obtain, so be sure to allow enough time to obtain the required approvals.

Establish or Verify Agreement With BNL to Cover Research

If you are conducting research at one of BNL's user facilities, a user agreement signed by your home institution is a prerequisite for experimental work. Guests are not permitted to do experimental work at any of Brookhaven's User Facilities until a User Agreement with your home institution is established.

To work at the Tandem you must have either a proprietary agreement, open data agreement, or both in place to cover your research.

How to Request a User Agreement

If your institution does not appear in this list,, then complete the User Agreement Questionnaire, which is the first step toward putting a master user agreement in place. Fill in the requested information and Brookhaven will furnish the appropriate User Agreement(s) to your institution for signature. This form may be submitted electronically by completing the questionnaire below and clicking the submit button or by printing and returning via fax to 631-344-8686. Printable Version

Address any questions to:

Amanda Satterley
Guest, User, Visitor Center
Brookhaven National Laboratory
Upton, NY 11973-5000
Phone: (631) 344-5076 | Fax: (631) 344-8686 | Email: agreements@bnl.gov

Arrange for Payment

Accounts are established by your home institution by way of a purchase order or advanced invoice. Use of the Tandem van de Graaff is billed based on an annually established hourly rate.

The purchase order should clearly state:

  • Name of the principal investigator
  • The words "for proprietary research" or "for non-proprietary research"
  • The total not to exceed $US dollar value
  • The expiration date of the purchase order

Non-federal users must provide an advance payment prior to any beam use. An invoice for the advance payment will be mailed to the user when beam use is scheduled. The advance amount is intended to provide sufficient funding to ensure that work can proceed without interruption due to delays in billing and payments. Researchers typically use of the Tandem van de Graaff facility for a limited duration. Therefore, most users will be required to provide full payment prior to any beam use. Access to the facility for experimental purposes will be denied if advance payment cannot be verified.

Upon completion of the contract terms, any remaining balance will be returned to the user upon request.

Questions regarding accounts should be directed to:

BNL Budget Office
Brookhaven National Laboratory
Bldg. 460 P.O. Box 5000
Upton, NY 11973-5000
Phone: (631) 344-7957 | Fax: (631) 344-2149 | Email: irving@bnl.gov

Submit BNL Arrival Notification

To access the BNL site, all guests must notify Brookhaven of their actual arrival date by completing the Arrival Notification Form on the Guest Central website. If you fail to do this, then access to the Brookhaven site could be declined or you may be delayed at the front gate.

Arrange for Houseing

You may wish to arrange for on- or off-site housing accomodations for your visit.

Complete Required Training

The following training courses are required prior to using the Tandem:

A valid BNL guest number is needed for training. If you have a valid BNL guest number, you may check your training status.

System Requirements for Training

Prepare for Arrival at BNL

You must bring identification with you: Identification Requirements

Figure out how to get here: Maps & Directions to Brookhaven Lab

If you are staying on site, then you should pick up your room key upon arrival. The Housing Office is open Monday through Friday, from 8 a.m. to midnight; Sunday, from 4 p.m. to midnight. If you are arriving or departing at other times, then you may pick up or drop off keys at Police Headquarters. Checkout time is 1 p.m. Before leaving, return your keys to the Housing Office and pay your housing bill.

All guests and users are provided with check-in procedures by e-mail when they submit a registration form to come to BNL. Guests can check their appointment and training status and what BNL identification documents are on file by visiting Guest Central.

All guests, users, and visitors must check-in at the Guest, User, Visitor Center, which is located in Building 400A prior to visiting their department and/or user facility. Check-in hours are from 7 a.m. to 5 p.m., Monday through Friday, excluding holidays. Guests should make every attempt to arrive during these hours.

All Tandem users must sign a Commitments and Expectations Statement and have a user agreement in place prior to conducting any research.