Weekly Tandem Maintenance

Name:

Date:

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Preliminary: Use your best judgment to determine if a particular step is not appropriate for today's maintenance!

1. Determine whether or not the tandem or ion sources are currently operating.
2. Begin filling the 500 L liquid nitrogen dewar at the linac hall fill station.
3. Cheek the previous week's maintenance sheet for uncorrected problems.

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Checklist: Circle and explain all items on this list, which could not be checked. {

1. On the back side of this sheet, record the control room Penning gauge vacuum readings.
2. Record the control room tank pressure ____ and temperature ___
3. Record propane tank levels. (Located outside by helium tanks.) #1____ #2____
4. Check the generator oil and water levels: start the generator and allow it to run until list is complete.
5. Check that the Air Compressor Room Exhaust Fan is running ( south wall exterior, room west of emergency generator ) If not, notify staff immediately.
6. Record the drop across the lab water filter located south of the LE tandem vault entrance.
7. Check the SNICS source deionized cooling water level.
8. Check the SNICS source backing pump oil level and two drive belts.
9. Check the pressure in the SNICS source argon cylinder; replace if less than 100 psi _____
10. Record the SNICS source vacuum gauge readings on the back of this sheet.
11. Drain the water from the airline trap (NOT THE OILER) on west side of SNICS source.
12. Record the LE cryopump temperature.
13. Record the beam line LE Vacuum (Penning gauge) on the back of this sheet.
14. Actuate the LE cryopump gate valve.
15. There is an unpumped section of beam line between the LE valve and the SNICS source exit valve. If either valve is open, cycle the LE beam line gate valve.
16. If the tandem is not running, actuate (close and immediately open) both gas security ball valves.
17. Drain the line water trap (NOT THE OILER).
18. Ensure that the LE faraday cup rotates and the indicator lights flash.
19. Record the Pelletron chain run time hours: #1_____ #2_____
20. Record the Scott Airpack pressure _____ (At HE end of the tandem in yellow case.)
21. Record the tandem pressure and temperature shown on gauges at HE end of tandem.
22. Record the HE cryopump temperature.
23. Record the HE pumping station vacuums on the back of this sheet.
24. Actuate the HE pumping station gate valve.
25. Actuate the HE beamline gate valve.
26. Ensure that the HE faraday cup rotates and the indicator lights flash.
27. Drain the HE air line water trap (NOT THE OILER).
28. Drain the compressor oil from the tandem 90 degree magnet image slits trap.
29. Ensure that the faraday cup 2 rotates and the indicator lights flash.
30. Record the target room 1-90 degree magnet vacuum on the back of this sheet.
31. Record the linac beam line vacuum and actuate entrance gate valve if vacuum permits.
32. Record the target room 1-90 degree magnet cryopump temperature back of this sheet.
33. Record the target room 1-90 degree magnet pumping station vacuums on the back of this sheet.
34. Actuate the target mom 1-90 degree magnet pumping station gate valve.
35. Record the switching magnet pumping station vacuums on the back of this sheet.
36. Ignore this step until new pump installed: Actuate the switching magnet pumping station gate valve.
37. Ensure that all necessary switches are active on the tandem beam line valve status panel and that each item is in the protect mode at the individual device's control box or panel.
38. Drain the switching magnet water trap (NOT THE OILER).
39. Ensure that the 4 radiation warning signs are lit. Lamps are only lit if tandem or preaccelerator is on.
40. Record the emergency generator temperature ___ oil pressure ___ and output voltages.
    1. 1 _____ 2 _____ 3_____
41. Turn off the generator and set switch to REMOTE position.
42. Record any problems found and corrected during this maintenance on the back of this sheet.
43. Drain the water traps located in the gas handling mom on the north and south walls.
44. If no experiment running: Close the Tandem Source - Tandem Vault - TR1 and TR2 doors, then verify the corresponding status lights on the Control Room interlock panel.
45. Activate the audible alarm in the control room and break the interlock by opening the TR1 door. Verify that alarm is audible.
46. Verify that the LE Cup can not be retracted at the cup control panel while door is open.
47. If Tandem is running: Verify the operation of lit signs at the TR1 and TR2 entries, near the film badge rack and the lit sign outside the loading dock.

IN CONTROL ROOM HE Penning gauge: ________ TORR LE Penning gauge: ________ TORR SNICS Penning gauge: _____ TORR Polarized Ion Source: ____ TORR

IN TANDEM VAULT SOURCE AREA SNICS Backing Line Thermocouple __________________ μ

SNICS Diffusion Pump Thermocouple ________________ μ

SNICS Channel 2 Source Box Thermocouple __________ μ

IN TANDEM VAULT: LOW ENERGY END LE Cryopump: Head Temperature _____ K

LE Vacuum: Penning Gauge ____ TORR

IN TANDEM VAULT: HIGH ENERGY END

HE Cryopump:Head Temperature _______ K

HE Vacuum: Penning Gauge 1 ______ TORR, Penning Gauge 2 ______ TORR

TR 1-90 degree Magnet Penning gauge: _________ TORR TR 1-90 degree Magnet Cryopump: Head Temperature _________ K

Linac Beam Line Penning gauge: __________ TORR Switching Magnet Penning gauge ________ TORR

Additional Notes: