 Thu Sep 23 13:31:12 2021, JM RSS ML, IE514 Gauge and Bakeout 
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CARME setup checked by vaccum group this morning.
Both IE514 gauges de-gassed. To de-gas on the CM52 controller select the channel and hold the right arrow for two seconds. The reading will flash
indicating the de-gassing procedure, this lasts for 2 minutes before completing. Flashing automatically stops once procedure finishes. Attached for convinience |
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Fri Sep 24 07:04:57 2021, RSS JM, IE 514 pin arrangement and degas instructions
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Fabre (German) Color (English)
grau
grey |
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Thu Feb 10 09:12:41 2022, OH, CB, US, Hourly motor movement
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To test effect of the motors on the leakage current, they were cycled once per hour overnight at approximately 50 minutes past the hour. - attachment 1
Leakgage current was seen to decrease slowly overnight before flattening out.
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Tue Feb 8 08:13:53 2022, OH, CB, DF, Hopefully effect of beam tuning on detectors 9x
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09:00 Detector still biased to 60V and leakage current has been mostly stable overnight.
Only minor fluctuations observed - attachment 1
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Sat Oct 9 09:44:36 2021, CB RSS, Heaters removed + motors tests
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Removed thermocouples, heaters, RE72 modules and leftover baking tent. Support octagon removed except topmost part which requires disconnecting pneumatic
hoses going to top gate valve. To be done on Monday with ML assistance.
Attempted to move servo motors once more - did not work. The motors appear stuck but it is not clear how or where. Removed screws on flanged |
 Thu Nov 11 14:01:00 2021, AK, ML, Heater channel layouts
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Schematic layout of heaters and channel assignment attached. Table kindly provided by AK. I hope the conversion from excel to pdf didn't swallow
any important information. |
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Thu Apr 17 08:51:29 2025, JM, Grounding cont. 29x
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09:00
Came in to see the bias for DSSD4 which has been fluctuating for the past few days had tripped during the night. From the gnuplot it looks like
it was fluctuating all night and just after midnight it went above 20uA and tripped. |
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Sat Feb 12 19:48:38 2022, JM, CB, Grounding and movement tests 11x
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> Initial grounding see final grounding from elog 187. ASIC settings for all - LEC slow comparator 0x64. Note on 11/02/22 1.8*L widths with same settings
were aida1-4: 300,240,250,260
ADC data items <10k |
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Sat Jan 29 11:04:07 2022, JM, OH, Grounding and Pulser
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Grounding
Ground cables have been daisy chained together from FEE to FEE. Ground cables are screwed into a feee bolt hole on the FEE body using an M3 bolt.
LEMO cables have been connected in a similar way between the grounds on the adaptor boards for each FEE. Short LEMO cables go between J6 on pairs |
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Fri Feb 4 12:49:54 2022, TD, JM, Grounding Tests and current status 10x
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JM plans to install new crimped, 3mm dia copper drain wires (a la AIDA@DESPEC) this afternoon.
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Wed Apr 16 08:20:05 2025, JM, Grounding 14x
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09:00
Leakage currents this morning again appear to have lowered during the night. Current plot shows a day/night variation but I think the minimum
is decreasing ever so slightly. |
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Thu Feb 17 16:26:27 2022, JM, CB, SD, Gauges OFF, Pulser Movement tests 7x
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Edinburgh group ion gauge turned OFF -> decrease in leakage current from 10.05 uA to 6.5 uA
GSI vacuum group ion gauge turned OFF -> decrease in leakage current from 6.5 uA to 3.63 uA
GSI large ion pump turned ON -> no effect on leakage current |
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Thu Sep 2 21:04:26 2021, CB RSS ML + DR OG, Gate valves mounted + pump down 6x
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Mounted both gate valves and support. Gate
valves could not be installed one bolt
rotated from 90 degrees as per drawings
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Tue Dec 7 09:39:59 2021, CB (remotely), Gate valves closed
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Dry run complete.
YR09 section valves closed. Section isolated. Manual valve between electron target and CARME remain open. |
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Tue Nov 30 10:49:43 2021, CB (remotely) GV, Gate valve opened
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GSI vacuum division IE514 gauge connected.
Gleb reports gate downstream opened. Vacuum goes up and recovers as expected. |
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Thu May 30 07:25:53 2024, Yuri, Phil, Nikos, Gas target
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The cave is closed and beam is back
The d intensity is about half of the intensity before the break
The gas target is prepared but the valvas cannot be opened. Anton is coming in at around 1 PM to open the gate valves. |
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Sat Oct 23 12:58:11 2021, JM, GSI vacuum and bakeout testing summary
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Attachment 1 shows the pump-down of the CARME chamber at GSI before installation of kapton cabling inside the chamber and mounting of the chamber on
the ring. Discontinuity in the plot is from switching between the pirani gauge and IE514 gauge. The pumping of the chamber in the turbo regime follows
the power law where P ~ 1/(nt) due to outgassing from the chamber being dominated by water outgassing which has an n ~1 dependence (for first order |
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Fri Jan 5 12:29:10 2024, JM, CB, Further bias tests
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Biased detectors this morning to 150V, the leakage current for all detectors appears stable and is ~3.5 uA. We have also replaced the CAEN bias module
so that all channels are now functional. Detectors are connected as follows;
CHN0 -> Top left |
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Fri Dec 4 16:49:36 2020, TD, Friday 4 December 7x
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Fri Apr 4 10:17:16 2025, TD, Friday 4 April
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10.43 Reboot carme-gsi - unable to open a working terminal
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