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.

All water circuits are by passed on the top of TM3. Water pumps and vacuum turbo- pumps are started. Everything is ready for TM3 camera sparking check.

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.

TCS TP1S has been started.

2017-01-23 afternoon: Stopped TP1S. We will use TCS to take TM2 tomorrow afternoon.

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.

ITE and TM4 2017 winter shut down leak check are finished. All ITE primary, secondary vacuum vessel and TM4 water lines are good. No any leak has been found.

Updated target hall schedule for 2017 winter shut down. See attachments 1,2

Update schedule after Febiad beam schedule changed to ITE. See attachments 3,4

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.

The move is successful.

TM2 has been connected in ITE. The SST window water lines in ITE can not be connected properly to TM2. The water line connector on TM2 window is 90 degree CCW installed in direction comparing to TM4.This caused the problem. Solution: Two piece of flexible lines and extra male QC adapters have been used to fix this issue.  HV cover and HV fence in ITE work  with TM2. Other connections are good as well.

Update 2017 winter shut down target hall schedule. See attachments

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.

Target module window  cooling lines at TCS has been modified to use spare 2 channel in TCS: WFB1. The old cooling lines used a spare channel in TCS WFB2(HVC channel) are removed and capped. After change, TCS window cooling lines will be interlocked with heaters. The test run on new lines are good. No leak  on all fittings, and signals on flow and temperature are good.   Control people will be noticed on this change for their following up job.