Update TH schedule after job delay on TM2 Febiad target. Everything should be back to schedule on last two targets. See attachments.

TM#2 with the old SiC #35 has been moved from ITW to the south hot cell.

Electrical check of TM#2 with the SiC#35  post beam run. See attached PDF for details.

TM#2 with UC#18 has been moved from the south hot cell to the conditioning station.

Results of TM#2 with UC#18 electrical at the south hot cell. See attached PDF for details.

Chad and I leak checked TM2 HS line with new UCx target installed. Helium spray  2 seconds on each joint and 10seconds flushing around target in SHC. LD base LR: 0.0XE-9atm.cc/sec, base pressure:0.0XE-4 torr. No response has been found on LD during check. The line is leak free.

All vacuum pumps have been started. Air ballast 50seconds on roughing pump. Everything is good  so far.

Thursday, November 24, 2016, 09:33: Water package on

Thursday, November 24, 2016, 09:43: TCS:WPV1 shows only 12% open. A visual inspection confirms the valve is fully opened. Controls will be contacted to troubleshoot

Interlock key  are returned back to B2 level.TM2 is ready for HV conditioning and heating up at TCS.

Argon venting on TCS and TM2 is processing

Argon venting is done.

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

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

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.

The ITW is configured to take proton beam.

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.

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).

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.

I did electrical check before and after Fefiad target installation on TM2. The RU (coil) Is till short to 60KV as before. Other result are good. After Febiad target is installed, Tm2 HS line is leak checked. On leak detector, base leak rate pumping down is much slow  than before.  The base pressure still could be pumped down to 0.0XE-4 torr.  After a long time wait, Chad and I leak checked at 2.2XE-8 atm.cc/sec base leak rate. Chad sprayed lots helium around the fittings and target. No any response has been found on LD. At this leak rate, the target and HS line is leak tight.  The Tm2 has been moved to THC so a heium pressure check will be fulfilled on HS line at TCS to confirm this leak check result.  

TM2 HS line is pressurized with 70 psi helium at TCS. LD base leak rate: 0.0 X E-9 atm.cc/sec. Base pressure 0.0XE-4 torr. 5 minutes test time. The leak rate slowly climed to 3.3XE-9 atm.cc/sec and stabled there( 3minutes). base pressure no change. The leak is too small to be concern. We will run this target as this condition.

I connected TCS vacuum system to TM2. The station is under roughing now. All turbo pumps will be started soon.

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