Two of resin tank filter cartridges(supply and return) are changed today. Old cartridges and bagged and tagged. The contact field on them are 650usv/hr. The new cartridges are fiber-glass, Triumf store item. After replacement, the field on contact with the filter case are about 10 usv/hr. But the field on contact with top resin tank  has been increased from 45usv/hr  to 225 usv/hr

 The flow rate is relatively stable before and after change. See attachment

update schedule according to change. See attachment 1,2

Chad and I finished the first round check on Tm2 water lines. The lines and spots checked are: Target oven + and - (front side braze joints) , Tube heater+and -(front side braze joints and water blocks), coil2 and coil 1(front side braze joints and area close to water blocks),. No leak has been found on all above of them.  The last, we checked   the GE which has the biggest leak so far. The leak detector base leak rate only can get to 4XE-9 atm.cc/sec. Chad sprayed helium very close to GE water block, and I got a quick response on leak detector. The leak rate climbed from 4Xe-9 atm.cc/sec to 1.4 atm.cc/sec. We confirmed the GE is leaking now. The exact location need to be pinpointed later once the containment box is out after the module is back to SHC. The module will be moved to TCS tomorrow morning and pressurized again there. Anders will use RGA to monitor the helium response during the check.  

I would like to post the spreadsheet of target hall schedule for beam schedule 130(Apr to Sep) first. The MS project of TH schedule for  beam schedule 130 is under construction, and will be posted later.

TM2 vacuum system has been connected at TCS. Started roughing pump. Everything is good so far.

TM2 has been helium pressure tested in ITW and TCS. They are both tested with 70psi helium, each circuit for 3minutes. 

The leak detector base leak rate: 0.0X E-9 atm.cc/sec, base pressure 0.0 xE-4 torr  for both ITW and TCS. The test results are:

 2016-11-24: Checked again and added result into this elog.  No essential change has been found. MSP still has the biggest leak rate. David

I stopped TM2 and TCS vacuum pumps. It will be vented and disconnected this afternoon for tomorrow  moving.   

TM2 vacuum system has been disconnected at TCS. Venting is in process now.

  Chad and I did the helium spray leak check on TM2 GE and MSP water lines at SHC this morning. We confirmed the GE leak on water blocks. We can not found the MSP leak by using the helium spray since its leak rate in TCS is much smaller than GE leak.  The leak check process are as below:
Leak detector are calibrated before the check.
GE lines : Base leak rate 0.0 X E-9 atm.cc/sec, base pressure 0.0 XE-4 torr.
Chad sprayed 5 psi helium to GE lines soldering joints  for 5 second, no response on leak detector.
Chad sprayed 5 psi helium to GE lines water blocks( between blocks seal surface) for 5 seconds, Leak detector response to 8 XE-9 atm.cc/sec right away.
Chad sprayed  5 psi helium to GE lines soldering joints for 5 seconds again, No response on leak detector.
Chad sprayed 5 psi helium around the source tray and to vacuum duct for 5 seconds more, No response on leak detector.
MSP lines: Base leak rate 0.0X E-9 atm.cc/sec, base pressure 0.0 X E-4 torr.  Chad did same thing as he did on GE lines. no response on LD. Chad repeated the test and prolonged the spray time to 10 seconds, No response.
The conclusion: It is pretty clear we have a leak on GE line water blocks seal.  MSP lines leak could not be found by helium spray in SHC since it is a small leak.
 

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

TM1 water lines helium pressure check at TCS is done. 70 psi helium was applied to water circuits. Leak detector base leak rate 0.0 x E-9 atm.cc/sec, base pressure 0.0 x E-4 torr. The result shows as below:

The results is good so far as we know the window line is leak on stem in service cap. The HS will be tested later with target on.

 The service cap air to vacuum seals also have been checked. The PNG1 panel and side round panel close to shutter are leak. The o-rings on them need to be replaced.

On March 30th -2016, I doubled checked the air to vacuum seal on the TM1 service cap. The side round panel is leak free actually. The PNG1 panel is leak at the bottom side. Confirmed.

On march 31th-2016, The o-ring(1-1/ 2275) on TM1 PNG1 side panel has been replaced today. The o-ring slot and mating surfaces are cleaned, and new  o-ring is installed. The panel is put back to TM1 and all bolts are tightened.

See attachments.

update the schedule according to changes.See attachment1, 2.

On each water circuit in side the service cap, there are 4 soldering stems which two of them are inside blue nylon insulator and other two are connected to service tray. Each stem has two soldering spots. See attachment pictures for detail location. I sprayed 15 psi helium on each soldering spots on stems  for 20second on each circuit. I sprayed tons of helium inside each blue nylon.No any leak has been found during the check. The leak detector base leak rate:0.0 XE-9 atm.cc/sec, base pressure:0.0X E-4 torr. The circuit which I checked are :TA+, Ta-, Tube+, Tube-, PQ (coil 2), RU( coil1), EE, MSP, GE. The HS and window circuit are opened at this moment so they can not be checked.

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.

New UCx target is installed on the module. 70psi helium,3 minutes. NO response on LD.  LD is pumped to bottom LR and LP during test.

Stop TCS vacuum pumps . Preparing argon venting on TM1 and TCS.

7:34 AM, Disconnected TM1 at TCS, argon venting now.

 All turbo -pumps are started.

The ITE and TM4 have been vented with Argon . TM4 vacuum system is disconnected in ITE.

All turbo pumps are started yesterday. The pumping down is good over night.

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