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  RH-ISAC, Page 69 of 139  Not logged in ELOG logo
ID Date Author Categorydown Type Module Target/Number Subject
  1245   Wednesday, May 25, 2016, 10:57 Travis CaveITWStandard OperationTM2Ta#48module moved

TM#2 with Ta#48 has been moved from conditioning station to the west target station.

  1246   Wednesday, May 25, 2016, 14:08 David WangITWStandard OperationTM2Ta#48TM2 has been connected in ITW

TM2 has been connected in ITW by Dan.M and David.W. All turbo-pumps have been started. Everything is good so fine.

  1271   Wednesday, July 06, 2016, 07:03 David WangITWStandard OperationTM2 TM2 was connected in ITW.

TM2 was disconnected in ITW and moved to SHC.

  1281   Tuesday, July 12, 2016, 09:59 Travis CaveITWStandard OperationTM2SiC#33module moved

TM#2 with SiC#33 has been moved from the conditioning station to the west target station.

  1282   Tuesday, July 12, 2016, 12:40 David WangITWStandard OperationTM2 TM2 has been connected in ITW

All turbo-pumps are started. Everything is good so far.

  1331   Wednesday, August 24, 2016, 10:41 David WangITWStandard OperationTM2 TM2 was disconnected in ITW yesterday.

TM2 was disconnected in ITW yesterday and moved to SHC.

  1342   Tuesday, August 30, 2016, 10:35 Travis CaveITWStandard OperationTM2Ta#49module moved

TM#2 with Ta#49 has been moved to the west target station from the conditioning station.

  1343   Tuesday, August 30, 2016, 13:17 David WangITWStandard OperationTM2 TM2 has been connected at ITW

  ITW turbo pumps  have been started.

  1344   Tuesday, September 06, 2016, 10:05 David WangITWStandard OperationTM2 5 Shielding blocks have been transferred from ITE to ITW.

5shielding blocks have been transferred from ITE to ITE. ITW is configured to take proton beam.

  1369   Tuesday, October 11, 2016, 10:36 Travis CaveITWStandard OperationTM2Ta#49module moved

TM#2 with Ta#49 has been moved from the west target station to the south hot cell.

  1370   Wednesday, October 12, 2016, 10:00 David WangITWStandard OperationTM2 TM2 was disconnected at ITW

TM2 was disconnected at ITW. 3 water circuits in ITW gave been looped to keep 75 GPM water flow to ITW. HS line was purged at HS. RPG got the water sample.

  1383   Tuesday, October 25, 2016, 15:10 David WangITWStandard OperationTM2 TM2 has been connected at ITW

All turbo pumps are started. Two gas valves for Febiad run are opened. Pumping down is good so far.

  1410   Tuesday, November 29, 2016, 12:57 David WangITWStandard OperationTM2 TM2 is connected in ITW

All turbo pumps are started. Water system and water signals have been checked. Pumping down on ITW and TM2 is good so far.

  1411   Tuesday, November 29, 2016, 14:50 Travis CaveITWStandard OperationTM2UC#18module moved

TM#2 with UC#18 has been moved to ITW from the conditioning station.

  1413   Saturday, December 03, 2016, 10:01 David WangITWRepairTM2 venting ITW and TM2 with argon.

A short between TM2 EE and bias is produced yesterday during tube heater ramp up.  Alex asked for an argon venting on ITW to see if the problem could be solved by venting and pumping down yesterday.  I set up argon venting system in electrical room and started the venting at 8:30 AM this morning.  It will take 5 hours to vent the ITW to 760 torr(mechanical gauge reading).  The venting system pressure is set as 2 torr. A pressure relieve valve is installed into ITW venting line to prevent station over venting. The argon bottle  valve in electrical room will be closed by isac opps after 5 hours venting.

  1415   Monday, December 05, 2016, 10:10 David WangITWStandard OperationTM2 Five shielding blocks have been transferred from ITE to ITW.

The ITW is configured to take proton beam.

  1419   Thursday, January 12, 2017, 14:24 David WangITWStandard OperationTM2 ITW primary and secondary vacuum vessel winter shut down leak check.

TM2 is located in ITW for this leak check. Leak detector is installed between ITW BV2s as before. LD base leak rate 0.0XE-9atm.cc/sec, base pressure 0.0XE-4 Torr. First , I leak checked dump module top flange seal which a small leak was found in last year winter shut down. This time,all ITW  turbo-pumps cooling fans are switched off during the check. Lots helium are sprayed around the dump module top flange this time. I did not see any response on LD.  The check is repeated 3 times. The results are same. There is no leak has been found on ITW dump module top flange seal at this moment. The  further confirming check will be repeated  when TM2 is moved back to ITW with dummy Febiad target  at the end of this month. The rest check result:  1 small leak(1.2 xE-8 atm.cc/sec) is found on one TM2 blue nylon bottom o-ring. This o-ring will be replaced when module is moved out of ITW.  It will be an easy job. Another small leak( 1.1XE-8 atm.cc/sec) is found on exit module 1 service cap top plate to frame o-ring seal. Its location is on east-south side of the exit module 1.This side is close and parallel to exit module 2 west-south side. Vacu- seal sprayer is used to fix this problem.  After two times spray, the leak is disappeared. This is not a permanent fix. The big top plate o-ring replacement is a complicate and dose taking job. It need to be well planned. The leak rate is small, and the leak source is close to ITW TP3 so there is no rush to replace the big o-ring on exit 1 service cap top plate at this moment. But, we need to close watching on this issue and have a job plan for this o-ring replacement since it could get worse in the future. There is no leak has been found on big T tank seal this year as well. All other primary and secondary vacuum seals  in ITW are good. TM2 water lines helum pressurize will be fulfilled In ITW or at TCS later. I will update this e-log when further test are finished.

 2017-01-25:  The O-ring on 60KV bias blue nylon stand is replaced at TCS. I leak check it. It is perfectly good now.

  1420   Monday, January 16, 2017, 09:32 David WangITWStandard OperationTM2 Helium pressure test on TM2 water llines at ITW

TM2 helium pressure test result at ITW. 70 psi helium 3 minutes on each circuit. LD base LR0.0XE-9atm.cc/sec  BP 0.0XE-4torr.  ITW IG1 1.22Xe-7 torr, ITW IG1S 1.31XE-7torr, ITW PNG4 2.66XE-6Torr(ITW TP4 off).

 

  2017-01-13 (atm.cc/sec) 2017 mini shut down
HS 0.0 x E-9  
Window 0.0 x E-9  
EE 2.7 x E-9  
Ta+ 2.2 x E-9  
Ta- 6.6 x E-9  
Tube- 1.3 x E-8  
Tube+ 2.8 x E-8  
Coil 2 2.8 x E-9  
coil 1 7.1 x E-9  
MSP 6.7 x E-8  
GE leak , no test  

All number are getting better comparing to last time check. All ITW vacuum readings are very good. ITW PNG4 was in low E-7 torr range also. At present, it is in low E-6 range due to ITW TP4 switching off.  The TM2  water line seals  are stable and reliable for 2017 beam run. The same check will be repeated  in 2017 mini shut down.

  1427   Tuesday, January 24, 2017, 15:32 David WangITWStandard OperationTM2 TM2 was moved from ITW to SHC this morning.

The move is smooth. Yasmine and Travis did the move.

  1434   Tuesday, February 07, 2017, 10:34 David WangITWMaintenance  ITW clean up

ITW has been cleaned up today.  All station are vacuum cleaned. I wiped all HV cover and HV area including conductors and insulators. The black foams which are used to wrap around TP back up line are degrading now. I removed most of these foams. Also, Some obsolete  water lines  are moved our of station. All waste are bagged . they will be surveyed and  stored(or disposed) according to radio-active level.

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