TM#3 has been moved back to the NW silo.

I stopped the TM3 and TCS vacuum pumps and water system. The TM3 is disconnected and vented. It will be moved to silo this afternoon.

ISAC operators attempted HV conditioning over the weekend.

https://web.accel.triumf.ca/isac_elog/Elog_show_result.pl?inid=218447&style=entry

 Problem found between ANODE (F) and chassis 90 kOhm. See attachment for details.

Update TH schedule according to changes. See attachment 1,2 .

update TH schedule weekly. See attachments 3,4

Target to Anode and target to Common showed ~ 500 kOhm values. No leaks above 3E-9 atm-cc/s seen. See attached.  

Anders Mjos wrote:

Conducted a more thorough leak check this morning with Edi. He found a leak on the base of the  blue F/T insulator for the multi-pin connector (see attachment). I discovered that all the bolts could rotate freely in the threads as they were too small. The bolts were replaced. The leak rate was reduced but still significant. The o-ring will likely need to be replaced. Tuesday, November 10, 2015, 17:00: Could not find new o-ring. Cleaned groove and o-ring and applied o-ring grease. Re-attached F/T.

Tuesday

Steerer wire had disconnected again. See DocuShare for photos.

Thursday, November 12, 2015

Leak checked the fixed F/T and the panel for steeerers. No leaks found.

Tuesday, November 10, 2015, 16:53: Roughing

Tuesday, November 10, 2015, 18:24: TP1S started

Tuesday, November 10, 2015, 18:30: TP1 and TP2 started

Tuesday, November 10, 2015, 18:41: All 3 turbos at speed.

Thursday, November 12, 2015, 08:30: Purged backing pump using purging function. Vacuum in backing line recovered to previous value. 

Module connected for HV testing. No target heating possible. All F/Ts tied together to HV common. EZL connected.

Friday, November 13, 2015, 11:20: Started water package

Friday, November 13, 2015, 11:52: 1kV on BIAS and 1 kV on EL

Friday, November 13, 2015, 12:54: BIAS/EL 10 / 5 kV

Friday, November 13, 2015, 12:59: BIAS/EL 15 / 7.5 kV

Friday, November 13, 2015, 13:04: BIAS/EL 20 / 10 kV

Friday, November 13, 2015, 13:08 : BIAS/EL 22 / 11 kV. Some sparks.

Friday, November 13, 2015, 13:17: Sparking at 22.5 kV. Had to return to 20 kV to recover. Back at 22.5

Friday, November 13, 2015, 13:21 : BIAS/EL 24 / 12 kV. 

 Friday, November 13, 2015, 13:27: Heavy spakring around 24.5 kV. Had to return to 20 kV to recover.

Friday, November 13, 2015, 13:31: Attempted to increase voltage again. Sparking started around 23 kV. Had to lower to 20 kV.

Friday, November 13, 2015, 13:36: 9 sparks for the last 5 min.

Friday, November 13, 2015, 13:45: Spark rate reduced, but multiple sparks encountered again at 20.5 kV. Reduced back to 20 kV

Friday, November 13, 2015, 13:50: Increased sparking at 20 kV. Had to lower to 18 kV

Friday, November 13, 2015, 14:07: Back at 20 kV

Friday, November 13, 2015, 14:13: BIAS and EL off

Monday, November 16, 2015, 08:18: Fault on chiller. Reset chiller unit on the roof.

Conducted a more thorough leak check this morning with Edi. He found a leak on the base of the  blue F/T insulator for the multi-pin connector (see attachment). I discovered that all the bolts could rotate freely in the threads as they were too small. The bolts were replaced. The leak rate was reduced but still significant. The o-ring will likely need to be replaced.

Tuesday, November 10, 2015, 17:00: Could not find new o-ring. Cleaned groove and o-ring and applied o-ring grease. Re-attached F/T.

Service cap leak checked this afternoon. Found multiple leaks of 10E-8 to 10E-7 range. Connected to the backing line with IG1 at ~4E-6 T, CG1A around 40 mT. Got responses around large round flange on top, rectangular side panels, water f/t on GND and water f/t on HV. Will resume leak checking tomorrow to attempt to pinpoint sources of leak more accurately.

O-rings were replaced on the service cap by Anders, Maico, Aurelia and Keith under work permit  I2015-11-05-5    

 One of the wires for the steerers had come loose and was reattached by Maico. Photo on DocuShare

Friday, November 06, 2015, 14:35: Roughing

Turbos was started around 4pm. Later it was found that the manual valve for the two turbo pumps on the service cap was closed. The valve was open and pumping resumed. The roughing vacuum was high and increased into Saturday morning. The vacuum system was switched off on Saturday.

Purged MP1 using the purging function. Performance recovered. Started rouging.

Monday, November 09, 2015, 09:18: Started TP1S

Monday, November 09, 2015, 09:22: Started TP1 and TP2

Monday, November 09, 2015, 09:33: All 3 turbos at speed

Leak found on F/T for multipin connector

Tuesday, November 10, 2015, 09:53: stopped turbos

TM#3 has been moved from the north west silo to the conditioning station.

Five F-308s have been filled with the spent targets. The F-308s have been moved to the hall way between the north and south hot cell areas.

The spent ZrC#7 target has been moved from the south hot cell to the spent target vault. The target was placed in pail #129 and then placed in slot 3B of the vault, it was 157mSv/hr upon removal from the south hot cell.

ZrC#7 was transfered to a spent target disposal pail today and removed from the hot cell. The "hot" end of the TM4 coil end was also disposed of in the same pail (#129)

Six F-308's where received from Nordion #6,#15,#13,#16 all contained contamination. Loose contamination was removed with some fixed contamination remaining levels are low enough to allow the transport of spent targets. flasks where serviced as per Nordion Document IS/PP 0009 F308, IS/PP 0981 F308. Flasks are now located in the north hot cell area.

The failed extraction electrode was inspected in the hot cell this morning by Anders and Chad. The following electrical measurements were taken

• EE on target assembly as recieved from TM after online operation. 14 Ohm
• EE removed from target assembly and placed on conductive flat surface. ~1 G-Ohm at 1kV
• EE installed back onto target assembly (fasteners not tightened).~ 0.8 G-Ohm at 1 kV

There was some material deposited on the EE. Some of which has fallen off - possibly during removal of the electrode from the target assembly. It seems the cause of the short was material build up between plasma electrode and extraction electrode. See photos.

The heat shield lid was removed after lunch. This revealed a broken target. The target may have broken after operation (in hot cell).

Photos are available on DocuShare

Rebuild handle of manipulator serial 7986 (currently in the east position) and replaced broken snap ring 5555-18h on west side of the handle underneath motion switch.

The febiad coil line removed from TM4 has been cut into pieces small enough to be disposed of in a 5 gal pal. The line was cut with a Ridgid Model 104 manual pipe cutter (using the manipulators of course).

This pieces constitute the bulk of the field in the hot cell and will be disposed of with the next spent target.