Electrical checks of the TM#2 with the old SiC#32 and without the target. See attached PDFs.

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.

TM#2 was moved into the south hot cell by 08:30.

  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.
 

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.

TM#2 has been moved from the south west silo to the conditioning station.

TCS is under roughing now.

TCS is under roughing now.

2016-04-14, Started TCS and TM2 turbo-pumps yesterday afternoon. Overnight pumping down is fine.

 Thursday, April 14, 2016, 07:50: RGA on

Friday, April 15, 2016, 08:09 : Ratio between water and air is higher than normal (indicating possible air leak). See attachment. 3.5 more H2O than N2.  (Ratio in TM3 Nov 2015 was 82:1)

A leak was found on the o-ring between the module flange and TCS. This could be fixed by cleaning the o-ring and sealing surface. The Window line is not closed and was accidentally pressurized with He on April 25

Tuesday, April 26, 2016, 08:47: David started the water package.

Wednesday, April 27, 2016, 08:15: Switched off chiller / water cooling.

Wednesday, April 27, 2016, 14:41: Switched chiller / water cooling back on.

Anders reported a possible air leak on TM2 and TCS by watching RGA  this morning. I found the quick connector on F terminal on the top of the module is leaking air. It is only used as "X" terminal for Febiad without  water. So, it should be blind capped instead of installing a quick connector. It was installed with a  blind cap before. I borrowed it for leak check on coil lines at SHC, but forgot to put it back right away. Instead, I put a quick connector on it later. This caused the problem. Anyway The TCS need to be vented , and a blind cap  will be installed on the F terminal.

2014-04-18, 9:24AM, I changed the quick connector with a blind cap on F terminal. the rough pump is started now.

Weekly update.This is the last update on 2016 winter shut down schedule. The new TH schedule for beam130  will be posted weekly after this. All jobs in winter shut down schedule were finished on time.

The following water circuits in TM2 are connected at TCS and running with water now : target oven+ - ( one circuit), tube heater+ -( one circuit), coil1 and 2(one circuit), MSP, and EE. The HS and window are open circuits now so they can not be supplied with water.  During the check before we knew HS and window circuit were close to perfectly sealed. So, The test result should not be affected without them

The TCS water pumps are started at 8:28 AM. All TCS high vacuum gauge readings are getting slight better after that.

 TCS water system worked fine overnight. I turned off TCS water system at 6:16 AM this morning. Start of purging TM2 water lines for helium pressure test again this morning.

2016-4-28 7:58AM. Disconnected TM2 water lines at TCS. Purged them with compression air each for 5 minutes. 

Anders and I finished the most part of TM2 water lines helium pressure test yesterday.I list the system parameters and test result as below:

TCS  IG1: 9.8XE-8 torr,  TCS IG2: 9.6Xe-7 torr, TCS IG1S: 3.5XE-9 torr, TCS CG1A: 10 m torr

Helium pressure: 70 psi. Test time: 5 minutes for each individual circuit.  1 hour for all  lines together test.

 Leak detector base leak rate:0.0 X E -9 atm.cc/sec, base pressure 0.0X E-4 torr. LD was always restored or closely restored to the bottom  scale after each individual test.

The HS and Window lines will be tested later with new target installed and  window line gaskets restored.

  I switched off TCS and TM2 vacuum pumps. The TM2 will be disconnected at TCS today and moved to silo on next Monday.

TM#2 was moved to the SW Silo from the Conditioning Station. TM#3 was from from the NW Silo to the Conditioning Station.

TM#3 was moved from the conditioning station to the NE Silo. TM#2 was moved from the SW Silo to the South hot cell.

Ta#48 has been installed onto TM2. Also new window gaskets were installed.

High current fasteners were torqued to 130 in lbs. Shutter side of the containment box recieved new fasteners.