Aurelia Laxdal wrote:

Aurelia Laxdal wrote: Aurelia Laxdal wrote: Aurelia Laxdal wrote: Aurelia Laxdal wrote: Anders Mjos wrote: The pump failed to pump down below 2 Torr. on Friday 15th E-fault 8680 submitted. Vacuum group will replace the pump today Edi Dalla Valle from vacuum group replaced the roughing pump TSG:RP1 in the morning. However, the pumping curve showed a leak: see attachment. It was suspected the VCR water line connection between the lid and the base of the target Heat Shield. After venting the chamber found the VCR connection between the lid and the base forgotten finger tight. Tighten it with wrenches and restarted pumping.  Turned ON the water for the heat shield cooling circuit. Put a lockout padlock on the transformer breaker since Controls work still seems to be underway. Turned ON the TGHT and ramping it up at a rate of 1A/30sec. Currently it's at 108A. Temperature measurements in progress for Ta46clone HP-SIS target, wrapped with 3 Ta foil heat-shields . Stopped for today at 360A for the TGHT and TBHT kept OFF.  Temperature measurements in progress for Ta46clone HP-SIS target, wrapped with 3 Ta foil heat-shields. currently at 496A and the window is OK.

 Temperature measurements ended on Thursday, January 21, followed by cool down over night.

 Pumping down: TS loaded with a LP-SIS container for spectrometer test. 

Started heating up the target container: up to 300A.

Last week: the LP container was heated up to TGHT 580A and TBHT 230A, and cooled down before the weekend. 

Pumping again (LP container in) for one more check. Last check was completed on July 26: up to 400A. 

Vented the chamber today (July 27). 

Did another test over the weekend. Currently the PSs are off and the chamber under vacuum. 

 22:55 Cooldown completed to remove the voltage wires from inside the vacuum box. 

Wednesday, September 14, 2011, 15:39: Vacuum at 1.3e-5 torr 

Thursday, September 15, 2011, 08:59: Vacuum at 2.9e-7 torr. Water flowing and vacuum stable. 

link to old e-log

See attached file for photos of the broken tube 

Friday, September 23, 2011, 16:3: The connection on the 9-pin connector for FEBIAD targets showed burn marks from the previous FEBIAD tests. Corresponding mark was found on the connector on the target side. Because of this the upper and lower 9-pin connectors were swapped to have a clean connector for the next FEBIAD target.

Friday, September 23, 2011, 16:4: Target installed and roughing started.

Friday, September 23, 2011, 17:12: Started turbo pumps. 

Monday, September 26, 2011, 09:00: Opened up water flow. Vacuum rose from 3e-6 to 3e-5 torr in 30 s. Closed water flow.

Monday, September 26, 2011, 09:00: Venting for leak check.

Monday, September 26, 2011, 10:20: Pressurized water lines with 120 PSI He. Leak detected on right water line connection to heat shield.

Monday, September 26, 2011, 12:00: Leak repaired. Pumping down. Kapton added on target  heater cooling line to prevent short with cooling line for FEBIAD coil.

Monday, September 26, 2011, 12:47: Started turbo pumps. 

Monday, September 26, 2011, 15:45: Opened up water flow. Vacuum stable at 3.5e-6 torr.Target ready to be heated.

• While testing SiC#26 a leak was discovered on the water line to the heat shield. The leak was in the right joint (see attachment). The heat shield water lines were removed from the test stand and repaired in the Machine Shop. 
• Kapton was added to the FEBIAD coil line to prevent it from shorting to the target heater line (see attachment).

Aurelia Laxdal wrote:

Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.

 Monday, October 03, 2011, 13:45: Venting.

Anders Mjos wrote:

Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.

 Monday, October 03, 2011, 14:45

• Target was visually  inspected and found to be ready to go online.
• No burn marks found on the 9-pin connectors.
• Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

Anders Mjos wrote:

Anders Mjos wrote: Aurelia Laxdal wrote: Turned off the HV and locked up the transformer. Isolated the ion source box. The target is under vacuum and the water is still on.  Monday, October 03, 2011, 13:45: Venting.  Monday, October 03, 2011, 14:45 Target was visually  inspected and found to be ready to go online. No burn marks found on the 9-pin connectors. Pumping down. Target will be stored under vacuum for now. Target is scheduled to go to Hot Cell on Oct. 20th. Electrical connections (target/tube heater + coil) are not connected

 Wednesday, October 12, 2011, 13:15: Venting

Wednesday, October 12, 2011, 14:15: Target brought back to lab for inspection and final check.

Rick Maharaj wrote:

test stand vented

 Thursday, October 13, 2011, 15:40: Pumping down

Friday, October 14, 2011, 10:00: Cooling water is on. Pressure increase from 8e-7 to 3e-6 torr. Venting.

Friday, October 14, 2011, 11:10: Replaced seals on cooling lines with new silver plated SS seals. Pumping down.

Friday, October 14, 2011, 13:25: Cooling water is on. Vacuum at 1.35e-6 torr.

Monday, October 17, 2011, 09:00: Vacuum at 5.4e-7 torr. target ready to be heated.

Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.

Anders Mjos wrote:

Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.

 The variable leak valve F3-592 has been repaired. Contaminated diaphragm was replaced. See attachment for details.

Anders Mjos wrote:

Anders Mjos wrote: Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.  The variable leak valve F3-592 has been repaired. Contaminated diaphragm was replaced. See attachment for details.

 The leak valve has been tested with He and a leak detector. The leak valve could regulate in the complete range of the leak detector. 10^-11 to 10^-4 atm cc/s

New supply of He and Ne was installed yesterday and gas lines leak checked. The He bottle is currently closed.

UPDATE Monday, June 17, 2013, 15:17

Specifications for the currently installed Ne leak (SN: 11-231) can be found on DocuShare

https://documents.triumf.ca/docushare/dsweb/Get/Document-46969

   The insulator for the tube heater was observed to be glowing with a blue shine when the target was on high voltage. The insulator was glowing on the side closest to the 9-pin connector. See attached photo.

Venting for target exchange

Venting chamber and purging cooling lines in preparation for target removal