Friday, January 04, 2013, 10:51: Vacuum at 3.2E-7 T

Friday, January 04, 2013, 10:52: Turbos stopped

Friday, January 04, 2013, 13:50: Venting

Friday, January 04, 2013, 15:04: Roughing

Friday, January 04, 2013, 15:24: Starting turbos

Friday, January 04, 2013, 15:33 : Turbos at speed

Friday, January 04, 2013, 15:34 : Vacuum at 1.7E-5 T

heating target for RFQ tests. Now the wiring is insulated with alumina beats and tubing and the target has the standard Ta alkali element mixture

Unfortunately I deleted some entries, so here a short summary in combination with a screenshot of the striptool

heated to 580A, vacuum increased over time from 4.8 to 5.6E-7T

HV up to 30kV - current of 37 uA - seems fine

Mass scan not possible, ops found a water leak in the magnet PS, optics around the magnet are thereofre also not available and red in EPICS

NOTE: all FC values are in reversed bias!!

source +4.5V, 2nd Rep 0V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

 about 2E-9A at FC0

one spark observed

source -5.5V, 2nd Rep 0V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

  about 4E-11A at FC0

source -12V, 2nd Rep 0V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

  about 5E-11A at FC0

  two sparks observed

source +4.5V, 2nd Rep 0V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

  about 3E-10A at FC0

source -5.5V, 2nd Rep 0V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up - done again since not sure if the restore of the tune was done properly for this

  about 4E-11A at FC0

done, source +4.5V, 2nd Rep +12V:  RFQ offs =0V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

   about 3E-10A at FC0

 1 spark during HV ramping

done, source +4.5V, 2nd Rep&exit +12V:  RFQ offs =+12V, RFQ Ampl = 20V, 1 MHz (current 0.26A), locked up

there is something visible <~ 2E-12A at FC0

reduced current to 550A and leave it over night.

Short summary:

suppression possible but RFQ has to be shifted, the "only source shift" mode yielded a worse suppression than expected - unfortunately no mass scans have been possible, which would help to get some information on possible effects

 Wednesday, January 09, 2013, 10:38: Turbos off. Vacuum at 1.7 E-7 T

Wednesday, January 09, 2013, 13:24 : Venting with nitgogen

Wednesday, January 09, 2013, 14:12: Target removed

Wednesday, January 09, 2013, 14:12: Roughing empty chamber

Friday, January 11, 2013, 08:36: Venting for installation of RFQ test target later today

Target installed with 120 in lbs torque on target legs and on central support.

Friday, January 11, 2013, 11:01: Roughing

Friday, January 11, 2013, 11:25: Start turbos - SR

Friday, January 11, 2013, 11:34: turbos at speed - SR

Friday, January 11, 2013, 11:35: vacuum at 1.2E-5T - SR

Started heating the target, now Silica sleevings are installed for wire insulation and the gap target -- repeller is now 0.6mm (was 0.25mm)

The optics at the teststand has been switched on, but TMS:CBC1 is not working. A fault report has been send to controls.

Start cooling of Target RFQ empty

Sebastian Raeder wrote:

Start cooling of Target RFQ empty

 Tuesday, January 15, 2013, 16:09: Turbos off

Tuesday, January 15, 2013, 21:15: Start venting with nitrogen- SR

RFQ empty target installed

Wednesday, January 16, 2013, 01:05: roughing started

Wednesday, January 16, 2013, 01:34: turbos started

Wednesday, January 16, 2013, 01:43: turbos at speed

Wednesday, January 16, 2013, 01:44: vacuum at 1.7E-5T

Thursday, January 17, 2013, 08:16: started heating of the target, vacuum at 2.6E-7T

 Thursday, January 17, 2013, 14:55: current at 572A/6.95V (panel reading), vacuum at 6.7E-7T

Thursday, January 17, 2013, 18:40: measurements done, vacuum at 5.3E-7T, current 572V/6.94V, start cooling down

Friday, January 18, 2013, 11:28: turbos stopped

Started roughing

Friday, January 18, 2013, 15:25: Started turbos

Friday, January 18, 2013, 15:33: Turbos at speed

Friday, January 18, 2013, 15:35: Vacuum at 1.5E-5 T

After the last test at the test stand, one of the conductor bolts (ITD0058) is damaged. To prevent damage to the thread inserts, all conductor bolts will be replaced with new ones.

 The temperature of the cooling water was logged during this test. See attachments for details. Note that current and voltage read back is not available due to trouble with the power supply. One thermocouple (Heat Shield circuit) came loose before the end of the test (not shown in plot).

 For conductor bolt work

Monday, January 28, 2013, 12:56: Turbos off

Monday, January 28, 2013, 14:18: Venting

Monday, January 28, 2013, 14:41: Roughing

Monday, January 28, 2013, 15:35: Starting turbos

Monday, January 28, 2013, 15:43: Turbos at speed

Monday, January 28, 2013, 15:45: Vacuum at 3.9 E-6 T