Friedhelm Ames wrote:

connected A(CH3)3 instead of He, pumped line and valve with pump on the high voltage rack.. Opened regulating valve first response at mass 27 with valve set point at 7.0.

 The bottle with Al(CH3)3 was removed from the test stand yesterday April 25.

comments in e-mail from Marik:

Anders & I took the Al(CH3)3 bottle out of the test stand & put it in the middle fume hood of lab 07.  There was some puffs of white "smoke" when Anders unscrewed the VCR coupling.  Likely some trapped liquid that oxidized on air exposure.  If at all possible, I would suggest a vertical orientation in the Faraday cage.

-Marik 

 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.

Did a local IOC reboot to cure to white-out. The test stand is now operational.

Rick and John installed the ITE-TM4-SiC#27-HP-SIS-May2012 in the Test Stand. Pumping down.

The vacuum on TSGIG1 reads 2.85e-07. Turing on water on teststand and observing any changes in vacuum pressure.

Target needs to be removed form teststand to remove heatshielding around target oven. The chamber will be vented, water circuits flushed and target removed.

 Tuesday, May 15, 2012, 10:13: Turbo pumps at speed. Vacuum at 1.4E-5.

Tuesday, May 15, 2012, 12:03: Cooling lines opened. Vacuum stable at 1.6E-6

Tuesday, May 15, 2012, 12:17: Target ready to be heated and biased.

Did the HV conditioning up to 30kV and started to ramp up the heaters to 580A and 230A.

 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.

Today: did a mass scan at 580A on TGHT and 230A on TBHT at 30kV. Found some A/q units discrepancies on the mass scan page. It may be a hall probe problem:  under investigations.

Uploaded the testing file on Docushare: http://documents.triumf.ca/docushare/dsweb/View/Collection-8539/Document-56575

Started the cool down.

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.

Thursday, May 17, 2012, 08:36: Turbo pumps switched off in preparation of target removal.

Thursday, May 17, 2012, 08:51: Purging cooling lines.

Thursday, May 17, 2012, 08:55: Venting.

Thursday, May 17, 2012, 09:21: Target removed

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.