Thursday, July 09, 2015, 13:17: Water package started.

Thursday, July 09, 2015, 15:20: Water package stopped.

Friday, July 10, 2015, 14:15: Roughing with new pump

Chad and i did a leak check on TM1heat shield with UCx target on.The circuit are pumped  down to the bottom leak rate and base pressure is 3xE-3 torr on the leak detector. There are two VCR caps on heat shield circuit. Chad sprayed helium on both of them   ( tested individually,2 seconds every time ) . The test repeated 1 time.There is no response on leak detector during 45 seconds waiting time on both time.Chad flushed helium around the target for 15 second. During 1 minutes waiting time , there is no response on leak detector.The heat shield circuit is leak tight at this stage. It will be helium pressure  in CS later.

Chad and i did a leak check on TM1(Lp-TiC) heat shield water circuit at south hot cell. There is no leak had been found on it. The circuit  is leak tight at present. I will do  helium pressure check on this circuit at  conditioning station once the vacuum is good enough.

 The pumping down on TM1 and conditioning station is fine over the weed end. The PNG 1(containment box) is 2.4xe-6 Torr, the IG1 (top service cap) is 9.0 xE-7 Torr, and the IG4 is 1.9xE-6Torr (diagnostic box). At this pressure, I connected the leak detector to the system and applied 80psi helium to the heat shield circuit. The leak rate and base pressure on leak detector are 0.0xE-9 Atm.cc/sec and 0.0xE-4Torr. There is no any response on leak detector during 4mins helium applying time. So the heat shield and Nb5 target water circuit is completely leak tight.

After ITW HV test is done, TM1 has been connected to ITW. Water signals are checked in electrical room. They are good.

TM1 has been connected in ITW.  ITW and TM1 turbo pumps have been started. Water is supplied to TM1 only. Everything is good so far.

TM1 has been connected in ITW. All turbo pumps are started. The pumping down on ITW is good so far. The water is supplied to TM1 for HV conditioning.

TM1 has been connected in ITW. Five turbo pumps have  been started. The TM1 containment box window line is capped on the service cap and the line is pump town to E-4 torr range.

TM1 has been successfully moved from silo to CS. The CS vacuum system is connected  to TM1. Turbo pumps on TM1 and CS have been started yesterday afternoon . The starting of TM1 turbos was easy. The pumping down over night is good so far.

The TM1 and ITW  were vented with argon gas last night. TM1 had been disconnected in ITW this morning.

TM1 full leak check in conditioning station has been fulfilled this morning.Both air to vacuum leak check and waterlines helium 80psi pressure test are fine.The result:

Air to vacuum helium spray:base leak rate on leak detector 1.6x E-9 atm .cc/sec.base pressure0.0xE-4 torr. sprayed helium around all flanges, turbo pumps,panels,bellow,insulation stands, gauges. No Response on leak detector. Air to vacuum seals on TM1 is leak tight.

Helium pressure test on all water lines.with 80 psi helium 3minutes test:

        PNG1 :2.4XE-7torr .PNG4 :2.6x E-6torr . IG1 :5.1xE-7torr.

A :target oven(+)  BL:2.0xE-9 atm.cc/sec .First minute no response,then climbed to1.9xE-8 atm.cc/sec. Stabled at 1.9xE-8 atm.cc/sec to 3 minutes.

B:target oven(-)    BL:5.5x E-9 atm.cc/sec.First 80 seconds no response, then climbed to 1.8xE-8atm.cc/sec. Stabled at 1.8xE-8atm.cc/sec to 3 minutes.

C:tube heater(-)   BL:8.0xE-9 atm.cc/sec .First minute no response ,then climbed to 2.7xE-8 atm.cc/sec. Stabled at 2.7x E-8 atm.cc /sec to 3 minutes.

D: tube heater(+) BL: 1.0xE-8 atm.cc/sec. First minute no response , then climbed to 1.8xE-8 atm.cc/sec. Stabled at 1.8x E-8 atm.cc/sec to 3minutes.

G:EE  BL:1.0xE-8 atm.cc/sec .First 1.5 minutes no response , then climbed to 1.7x E-8 atm.cc/sec. Stabled at 1.7x E-8atm.cc/sec to 3minutes.

F:heat shield   BL:1.2x E-8 atm.cc/sec. First  1.5 minutes no response , then climbed to 1.9 xE-8 atm.cc/sec. Stabled at 1.9 xE-8 atm.cc/sec to 4 minutes. Total test time 4 minutes.

I: mounting plate    BL:1.2 x E-8 atm.cc/sec.     NO RESPONSE on leak detector  in 3minutes.

M: window   BL:1.2x E-8 atm.cc/sec First 1.5 minutes  no response,then climbed to 2.0xE-8 atm.cc/sec . Stabled at 2.0xE-8 atm.cc/sec to 3minutes.

The base pressure on leak detector stayed at 0.0x E-9 torr through all the test, and no pressure response on high vacuum gauges.

I disconnected TM1 in ITW yesterday morning.The general radioactive level in ITW over the TM top (300mm) is about 350 usv/hr. contacting level on TP1 and TP2 are 1.0-1.2 msv/hr. I took 0.22 msv dose .The module is moved to

south hot cell later and a shielding plug is put back to ITW. Everything is fine.

I disconnected TM1 in ITW.  Heat shield line has been purged .

I removed 5 shielding blocks from ITW to block storage area, and disconnected TM1 in ITW. After UCx run,  the radioactive level around the turbo pumps and primary vacuum lines are pretty high. This affect the general field inside the ITW pit around working area.i took 15 minuts to finish the job and i got 0.1msvr dose. the general field around my working area is about 350 usv/h.

Bevan and I disconnected TM1 in ITW this morning. The TM1 was moved to south hot cell later.   

  I hooked up the leak detector to the TM1 and conditioning station vacuum system, and did the air to vacuum leak check on TM1 and station. The leak detector base leak rate 0.0x-9Eatm.cc/sec,base pressure 0.0x -4E torr. I sprayed helium around all water quick connectors (especially heat shield),gasline and valves, all gauges, turbo-pumps, bellow,  flanges, and blank-offs. There is no any response on leak detector. The TM1 is leak tight on air to vacuum seal. All   water lines on this module had been pressurized with 80psi helium when module was located in ITW on this January, and they are all leak tight. Bevan and I did a leak check on new installed diagnostic box and all vacuum lines, gauges, and turbo pump last week, and they are all leak tight. So I would say the whole vacuum system on TM1 and conditioning station now is leak tight. Right now, the PNG1(inside containment box ) is 6.5 xE-6Torr, the IG1 (top service cap which close to turbo) is 2.1xE-6 torr, and the IG4 (inside diagnostic box) is 4.1xE-6 torr.  

I started two turbo-pumps on TM1 and one small TP on TCS. They are work fine. 

I can not start the TCS pumps due to control page white out. Control group is working on this issue.

Control group fixed the white out problem. I started all turbo-pumps. The pumping down is good so far. The TM1 IG1 is broken. I will check it on next Monday. It could be a broken filament. Then, the filament will be replaced.

TM1 and TCS vacuum system have been connected. All turbo-pumps are started. The pumping down is fine.

TM1 has been connected to ITW. It is pumping down in ITW with 6 turbo-pumps on.