The following drawings of the User Test Board Mounting Frame are
Test Board Mounting Frame Without Spacers (Metric Dimensions)
Test Board Mounting Frame Without Spacers (English Dimensions)
Test Board Mounting Frame With Spacers Attached (Metric Dimensions)
Test Board Mounting Frame With Spacers Attached (English Dimensions)
A digital photograph of the SEUTF Positioning Stage
Connectors are mounted on connector feedthrough plates. See a
Drawing of a
The connector feedthrough plates can be custom made and exchanged.
Suitable O-rings are available at the SEU Test Facility.
User built connector feedthrough plates should be vacuum tested prior to your scheduled experiment.
The following feedthrough plates are available at the SEU Test Facility:
Note 1: Female/female BNC connectors on plates 3, 4, and 5 can be
changed to the female/female SHV connectors.
Note 2: Two connector feedthrough plates can be used at the same time.
2-3 feet (61-91 cm) minimum cable length outside the vacuum chamber,
depending on your tester.
3 feet (91 cm) minimum cable length inside the vacuum chamber.
2 feet (61 cm) minimum cable length inside the vacuum chamber when disabling the roll angle rotation.
Typical operating vacuum in the Test Chamber is ~ 6.0 x 10-4 Torr
Typically, it takes about 5 minutes to pump the Test Chamber from atmosphere to ~ 6.0 x 10-4 Torr
Normal dimensions are 10 x 10 inches (25.4 x 25.4 cm).
18 x 18 inches (45.72 x 45.72 cm) is possible if the test board is symmetrically mounted on the frame.
Any dimension greater than 10 x 10 inches requires disabling the roll angle rotation.
Working area is 6 x 10 inches (15.24 x 25.4 cm).
There is no practical limit to the number of devices that the software can handle.
Normal Flux range is 102 to 107 ions/cm²/sec.
Normal Fluence range is 103 ions/cm² to 1010 ions/cm² with test run times of 10 to 103 sec.
Higher fluxes and fluences can be achieved with some ions using a special dosimitry system.
Beam diameter is continuously variable from 0.2 to 3.0 cm.
There are over 50 ion species available covering an LET range from 0.015 to 91. Effective LETs obtained by varying the angle of incidence can be as high as 150 MeV cm2/mg. It takes about 15 minutes to change the energy of a given beam and between 30 and 40 minutes to change to a different ion. Most of this time is spent verifying the beam species and purity.
There are different hourly rates depending on the type of contract under which your work will be performed. Please call our business office, (631) 344-7957, to find out the rate that applies to your situation. They will also be happy to set up an account for you and to explain the payment options. For a more detailed breakdown of costs take a look at Section B: Other Services, Tandem Van de Graaff, Cost per hour in the BNL Standard Rates table.
You can look at the calendar and submit a Time Request on-line. We will then confirm your reservation by E-mail, phone or fax. You may also contact us if you have additional questions or need further assistance.
Contact us if you have additional questions or need further assistance.
Users are required to complete and return a TVDG Facility User Questionaire (.pdf) at least 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.
We have vacuum feedtrough plates which can be used to hook up thermocouple wires. We also have one plate with feedthroughs for liquid cooling lines that some people have used. We also have small refrigeration circulators that you can borrow.
No, the dosimetry is done with detectors with precise collimators placed upstream from the board. There are four stationary detectors which surround the useful portion of the beam, and a fifth one which is periodically introduced in the center position to verify uniformity.
Yes, there is access to common hand tools, soldering equipment and some test equipment such as oscilloscopes, multimeters, and supplies.
Yes, we do have blank mating connectors which match the connectors on the feedthrough plates for emergencies.
Radiation is continuously monitored with redundant detectors placed in close proximity to the chamber, and the upper limit there is set at 5 mR/hr. At the location users spend most of their time, the levels are much lower. In the rare instances when levels may approach 5 mR/hr, the tests are run from another room. Since the SEUTF can be run via remote computer, you can run all your tests from outside the target room, if you prefer.
Yes, our operators must inspect the irradiated parts with sensitive radiation monitors, before they can be transported. There is rarely any measurable activation.
Required training to use the facility includes basic radiation safety.
Here is a short biography of Robert Van de Graaff.
Yes. You can download the Manual.