TM#2 has been moved from the south hot cell to the south west silo.

 TM#4 with SiC#37 has been moved from the East Target Station to the South Hot cell.

 Electrical check of TM#4 with SiC#37 attached post beam. A short was found between the Einzel Lens and Chassis. See attached PDF for details.

 The results of yesterdays electrical check of TM#4 with no target attached. See the attached PDF for details.

Yesterday Aaron, Isaac and Anders inspected the EZL connection from the service chase to the optics tray using the goose neck camera in SHC. No issues or shorts could be identified. Containment box was not removed.

Today David and Anders opened up two panels on the service cap and inspected the EZL connection. No issues or shorts could be identified. Photos available on DocuShare.

Next step will likely be to remove the containment box and inspect the optics tray.

Anders Mjos wrote:

Yesterday Aaron, Isaac and Anders inspected the EZL connection from the service chase to the optics tray using the goose neck camera in SHC. No issues or shorts could be identified. Containment box was not removed. Today David and Anders opened up two panels on the service cap and inspected the EZL connection. No issues or shorts could be identified. Photos available on DocuShare. Next step will likely be to remove the containment box and inspect the optics tray.

The containment box was removed yesterday. One of the main insulators on the source tray had cracked at the rear close to the bolt to the source tray mounting plate (see photos using link above)

Troubleshooting continued this morning with disconnection of the optics tray from the module. The banana plug copper tube connection was removed form the optics tray side. With the connection removed, the measurement showed open line on top of the module indicating that the problem is on the optics tray

 TM#4 was moved to the conditioning station from the south hot cell. The module was moved with out the containment box.

  Helium pressure test on TM4  water lines is done this morning. 70 psi helim , 1 minutes time to each circle. The result:

A(oven+): 0.00xE-9 atm.cc/sec

B(Oven -): 8.1Xe-7 atm.cc/sec

C(tube -): 0.00xE-9 atm.cc/sec

D(tube+): 1.0xE-5 atm.cc/sec

PQ(coil 2): capped on top. water lines were removed because of leak

RU(Coil1): 0.00xE-9 atm.cc/sec

EE: 0.00xE-9 atm.cc/sec

MSP: 0.00xE-9 atm.cc/sec

HS: No target, capped on top. It was fine on last target check in 2017 Oct.

window: Capped on top. Containment box is not installed.

The leak check on D line caused the IG1 small response during test.

B and D circle are double checked. The reasults are same.

D line leak is in E-5 atm.cc/sec range. It is possible to locate it by using helium spray method in SHC. The containment box is not on so it should be easy to do it.

Switch on IGA gauge at TCS and apply helium and water at certain psi to check the IGA response may give us more information on these leaks.

 All lines were test in last year shut down. They were good.

BIAS only. Water lines looped on top. Containment box off.

Thursday, May 17, 2018, 11:20: Vacuum 7.2E-7 Torr

Thursday, May 17, 2018, 11:30: 10 kV

Thursday, May 17, 2018, 11:42: 20 kV

Thursday, May 17, 2018, 12:14: 25 kV

Thursday, May 17, 2018, 12:35: 30 kV

Thursday, May 17, 2018, 16:13: 35 kV

Thursday, May 17, 2018, 17:339: 37.5 kV

Thursday, May 17, 2018, 17:40: vacuum 6.8E-7 Torr

Thursday, May 17, 2018, 18:13: BIAS off.

At 8:50 AM today, I applied water to TM4 tube heater - (B) line at TCS. All high vacuum gauges got response on this action. Water is leaking through B line on TM4.

It should be D line . David 2018-06-05

 TM#4 with no target and no containment box has been moved from the conditioning station to the south hot cell.

The optics tray has been removed from TM4.

The new module move ventilation procedure was successfully tested (ITM:MP2). ITM:CM4 did not drop below 6 in during the test.

 TM#4 has been moved from the south hot cell to the east target station, and TM#2 has been moved from the south silo to the south hot cell.

Tray with loop and beam shield has been inserted into the hot cell to be installed on TM4 .

The tray with window waterline loop and EF Shield has been installed into TM4.

 The results of TM#4 with UC#22 electrical check. See attached PDF.

 TM#4 ,with UC#22, was moved from the south hot cell to the east target station. Upon lowering the module down it made contact with the IMC, At that point the module was removed and placed back in the south hot cell. The IMC was inspected and problem corrected and the module was moved back to the east target station without a problem.

Travis Cave wrote:

TM#4 ,with UC#22, was moved from the south hot cell to the east target station. Upon lowering the module down it made contact with the IMC, At that point the module was removed and placed back in the south hot cell. The IMC was inspected and problem corrected and the module was moved back to the east target station without a problem.

 The IMC (ITA0160) appears to have a dent in it from the contact with the Target Module. The pressure on the IMC was found to be about negative ~3 mmHg and was increased to ~20 mmHg to attempt to retract the IMC further away from the TM. This pressure is similar to the pressure used at the Conditioning Station. The bellows appears not to be symmetrically compressed. It should be inspected again and pressure checked and monitored for upcoming module moves.

See attachments