Wednesday, September 14, 2011, 15:33

blah blah blah...

Venting chamber and purging cooling lines in preparation for target removal

Anders Mjos wrote:

Venting chamber and purging cooling lines in preparation for target removal

 Monday, April 16, 2012, 11:55: Target removed. Cooling lines must be blanked off before pumping down.

 When the target was removed from the test stand it was discovered that the custom designed insulator stand-off (ITD0400 made from Mycroy 1100) had swollen and become discoloured in the area exposed to "heat shine" from the target oven. See attached pdf for photos of the insulators.

The heat shield lid was opened up and the target temporarily removed to replace the two insulators that had failed. These were replaced with the commercially available glazed steatite stand-offs. The target had some marks from the insulators which was cleaned with acetone and methanol.

After replacing the insulators, the target assembly was assembled, leak checked and a new electrical check was performed.

Additional photos are available on DocuShare

Thursday, May 31, 2012, 15:42: Roughing

Thursday, May 31, 2012, 16:01 : Starting turbos

Thursday, May 31, 2012, 16:08 : Turbos at speed. Vacuum 1.7 E-5

Friday, June 01, 2012, 08:08: Cooling water opened. Vacuum stable at 5.7E-7. Target ready to be heated and biased.

Did the HV conditioning.

Heaters conditioning in progress.

The Hall probe is not working: couldn't pass 35.5 units (readback) or 50.16 units (setpoint) at field -3710G.

Tried to turn ON/OFF magnet PS and to reboot Canbus, but nothing worked. Still waiting for E-Fault 6031 to be resolved.

Started cool-down.

Aurelia Laxdal wrote:

Did the HV conditioning. Heaters conditioning in progress. The Hall probe is not working: couldn't pass 35.5 units (readback) or 50.16 units (setpoint) at field -3710G. Tried to turn ON/OFF magnet PS and to reboot Canbus, but nothing worked. Still waiting for E-Fault 6031 to be resolved. Started cool-down.

 Monday, June 04, 2012, 10:51: Turbos switched off

Monday, June 04, 2012, 11:06: Purging water. Venting.

Monday, June 04, 2012, 11:36: Target removed

Friday, August 31, 2012, 15:19: roughing

Friday, August 31, 2012, 15:39 : starting turbos

Friday, August 31, 2012, 15:44 : TP1B at speed

Friday, August 31, 2012, 15:48 : TP1A timed out

Friday, August 31, 2012, 15:48 : TP1A restarted. at speed.

Friday, August 31, 2012, 15:49 : both turbos at speed. Vacuum @2.7E-5

Anders Mjos wrote:

Friday, August 31, 2012, 15:19: roughing Friday, August 31, 2012, 15:39 : starting turbos Friday, August 31, 2012, 15:44 : TP1B at speed Friday, August 31, 2012, 15:48 : TP1A timed out Friday, August 31, 2012, 15:48 : TP1A restarted. at speed. Friday, August 31, 2012, 15:49 : both turbos at speed. Vacuum @2.7E-5

 Tuesday, September 04, 2012, 08:10: Opened cooling water. Vacuum stable @ 2.2E-7

 See attached photo

Wednesday, September 12, 2012, 08:01: Turbos off

Wednesday, September 12, 2012, 13:35: Venting, water off and purged.

Wednesday, September 12, 2012, 13:55: Vented

Replaced swollen insulator and added Ta heat shield on insulator.

Wednesday, September 12, 2012, 17:03: Roughing

Wednesday, September 12, 2012, 17:23 : Starting turbos

Wednesday, September 12, 2012, 17:32 : Turbos at speed

Wednesday, September 12, 2012, 17:33 : Vacuum at 3.2E-5

Thursday, September 13, 2012, 08:16: Opened up cooling water. Vacuum (IG1) increased from 5.9E-7 to 6.2E-7 before returning to 5.9E-7. Similar response on IG6 (valve closed). Response is however similar to previous (short time ~5 min) vacuum fluctuations.

Target cooled down. Power supplies off.

Friday, September 14, 2012, 15:27: Turbos off.

Friday, September 14, 2012, 15:32: Water purged.

 Friday, September 14, 2012, 16:00: Venting

Friday, September 14, 2012, 16:26: Vented

Thursday, October 25, 2012, 13:00: Roughing

Thursday, October 25, 2012, 13:19 : Turbos on

Thursday, October 25, 2012, 13:28 : Turbos at speed

Thursday, October 25, 2012, 13:29 : Vacuum at 1.6E-5 T

Anders Mjos wrote:

Thursday, October 25, 2012, 13:00: Roughing Thursday, October 25, 2012, 13:19 : Turbos on Thursday, October 25, 2012, 13:28 : Turbos at speed Thursday, October 25, 2012, 13:29 : Vacuum at 1.6E-5 T

 Friday, October 26, 2012, 08:29: Opened water. Vacuum stable at 1.8E-7 T

Did the HV conditioning for the TiC#3 up to 30kV.

Heaters ramp up in progress.

The TSH:TGHT stopped at 263.7A, but the setpoint is still ramping (now at 421A). The voltage is set correctly: have 6.238V setpoint and 4.386V readback. The reading on the Power Supply shows 418A. Through the window the target assembly looks at high temperature. The readback on Epics seems stuck. E-Fault for Controls 6389

Mass scan file: plotdump-local-clean.txt Nov2 12 13-15-59.txt

The scan was taken at TGHT=573A (read from the PS panel) .

The TBHT = 230A

Started the cooldown for SiC#3.