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.

Anders Mjos wrote:

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.

 See attachment#1: 9-pin-connector.jpg 

• 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).

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Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.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Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.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Anders Mjos wrote: Variable leak valve with serial number F3-592 has been replaced by F3-649 due to regulating problems described previously by Fridhelm Ames.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

TPS:Q2 and TMS:MB1 failed during the scan. -> restarted.

Wednesday, April 18, 2012, 12:15: Blanked off cooling lines. Chamber ready to be pumped down.

Wednesday, April 18, 2012, 12:16: TSGRP1 makes unusual noise when attempting to pump down vacuum chamber. Roughing aborted for now. Edi Dalla Valle is informed. He will have a look at it after lunch.

Wednesday, April 18, 2012, 13:08 Anders Mjos wrote:

Wednesday, April 18, 2012, 12:15: Blanked off cooling lines. Chamber ready to be pumped down. Wednesday, April 18, 2012, 12:16: TSGRP1 makes unusual noise when attempting to pump down vacuum chamber. Roughing aborted for now. Edi Dalla Valle is informed. He will have a look at it after lunch.

 Wednesday, April 18, 2012, 13:08: Started pumping down again with Edi present. No noise was observed.

 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

 TSGIG1 has timed out. As seen on the attached screen shot, the IG has been out since 17h May 1st.

Anders Mjos wrote:

TSGIG1 has timed out. As seen on the attached screen shot, the IG has been out since 17h May 1st.

 Wednesday, May 09, 2012, 09:15: ISAC Fault Report submitted

Anders Mjos wrote:

Anders Mjos wrote:  TSGIG1 has timed out. As seen on the attached screen shot, the IG has been out since 17h May 1st.  Wednesday, May 09, 2012, 09:15: ISAC Fault Report submitted

 Thursday, May 10, 2012, 08:12: Venting vacuum chamber for Edi - to repair the Ion Gauge.

Thursday, May 10, 2012, 08:45: Vented.

Anders Mjos wrote:

Anders Mjos wrote: Anders Mjos wrote:  TSGIG1 has timed out. As seen on the attached screen shot, the IG has been out since 17h May 1st.  Wednesday, May 09, 2012, 09:15: ISAC Fault Report submitted  Thursday, May 10, 2012, 08:12: Venting vacuum chamber for Edi - to repair the Ion Gauge. Thursday, May 10, 2012, 08:45: Vented.

 Thursday, May 10, 2012, 09:38: Ion Gauge filament replaced by Edi.

Thursday, May 10, 2012, 09:48 : Pumping down.

Thursday, May 10, 2012, 10:17: Ion Gauge reading vacuum at 1.3 E-5 torr.

 A chip of insulator material was detected below the lower target insulator stand-off (attachment - left picture). The chip may come from the tube heater insulator above (attachment - right picture). The chip will be further investigated when the target is removed.

During the mass scan today it was discovered, that the mass calibration was off. Further investigation showed, that the Hall probe readings are a factor of 1.31 lower than during previous measurements. A fault report has been issued to controls.

Anders Mjos wrote:

A chip of insulator material was detected below the lower target insulator stand-off (attachment - left picture). The chip may come from the tube heater insulator above (attachment - right picture). The chip will be further investigated when the target is removed.

 The chip came from the lower insulator stand-off on the target assembly (see attachment). After investigating the chipped insulator, it was decided (Pierre, Friedhelm, Anders) not to replace it - as the risk involved may be less than the risk involved in replacing.