 Thu Jan 27 15:19:18 2022, OH, JM, Enabling internet access on the carme-gsi server
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To use both anydesk and firefox on the carme server require an internet connection.
As the server is on the cryring local network an ssh tunnel needs to be opened to the GSI proxy server.
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Mon Jun 10 18:22:47 2024, JM, Electron cooler calculations 
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Ion beam energy is calculated using Beamcalc (https://web-docs.gsi.de/~lestinsk/beamcalc/electron.php)
Electron current is set to 4.3 mA and can be taken from Grafana
Alpha factor is 50 |
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Tue Sep 26 10:13:14 2023, TD, ELOTECH PID Temperature Controller R4000 manual ( German and English )
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Wed Feb 23 20:06:43 2022, TD CN, E141 kinematics
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Assuming DSSSD is 1000um thick we can expect to observe protons for E_lab=11MeV as follows
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Sun Oct 31 07:29:17 2021, CB JM + RSS OG, Detectors mounted on plate in CARME 8x
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(Wed 27 October)
Dismounted plate from rod. Dismounted broken detectors from plate and placed back in box. Dismounted "dog leg" struts and replaced
with fully un-threaded struts. |
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Sun Oct 31 07:21:09 2021, CB JM RSS, Detectors arrived in GSI 6x
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(Tue 26 October)
Two new CARME DSSD arrived in GSI and collected. Visually inspected both sides. No obvious damage. Photos attached. Second detector (3335-2)
was shipped in upside-down box. Does not seem to have made any difference. |
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Fri May 26 09:08:06 2023, JM, CB, Detector movement
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Hopefully we will not be opening the chamber for quite some time so find attached images of all four installed detectors and a video of them both moving
into the beam axis for future reference |
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Mon Feb 5 20:15:31 2024, CB, TD, Detector move in/out signals
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17.43 setup signals from detector movement controller.
See attachment 1
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Wed Sep 29 13:13:51 2021, JM RSS PB(remotely), Detector frame assembley
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29/9/21
We have opened the cleaned parts for assembley of the moving detector frames. We appear to have everything we require.
Standoffs - 12 M3x35 bolts, Many M3 washers, Many M3 nuts, 16 standoff tubes. |
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Tue Feb 6 09:39:54 2024, CB, Detector bias tests 13x
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10:30 Found ADC#4 on aida 1 and 4 are suddenly noisy. See attach 1-2. Checkloaded multiple times - no effect.
Leakage current overnight was stable, but a clear transient can be observed yesterday around the times of the DSSD motion test. We did not observe
this in the cave looking at the CAEN module - it might have been too fast. |
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Tue Feb 1 14:43:20 2022, JM, TD, Detector Bias, FEEs
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Detector is not biasing as it has in previous tests. Last bias 15/1/22 see previous elogs, max leakage current ~10 uA at 150V
Detector bias increases well above 10uA for voltages as low as 30-40V. Optical windows covered, Y09 valves closed, large ion pump OFF and both
ion gauges OFF produces similar results but with a slightly lower leakage current. |
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Wed Feb 2 21:53:32 2022, JM, TD, Detector Bias
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FEE mounts for 5,6,7,8 disassembled to access adaptor boards. No sign of debris which could cause short on adaptor boards.
Adaptor boards removed and checked against spares with multimeter. Both show same characteristics. Pins on feedthrough checked using multimeter.
No longer see -18.5 KOhm between bias pins, no see 140 kOhm which is similar to bias pin to non bias pin from prevous tests. |
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Sun Apr 20 07:30:29 2025, CB, DSSD leakage currents over Easter
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Just after midnight on 20/04 it appears DSSD #4 leakage current has perfectly stabilised. See attached.
DSSDs remain biased.
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 Fri Jun 7 15:53:35 2024, TD, DSSD leakage current increase - temperature increase in CRYRING hall
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Re-increase in DSSSD leakage current c. 14-15.00 6.6.24
There was a significant temperature spike in the CRYRING hall on the afternoon of 6.6.24 which has, partly, recovered - see attachment 1
Quote:
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Tue Feb 20 07:50:10 2024, JM, DAQ restart
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DAQ restarted. Run46. All appears OK, aida01 shows high rates across ASIC 4 even with no beam which could not be resolved via ASIC control. May suggest
some damge.
Merger is running and tape server is writing data to disk. Data rate is about 1300 kB/sec from 800 kb/sec due to increase in aida01 rate. |
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Tue May 27 05:03:41 2025, JM, DAQ restart 7x
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06:00
FEE modules power cycled.
No issues on power cycle restart. |
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Mon Feb 21 20:56:51 2022, SHB, JM, CB, OH (remotely), DAQ connection for ion current
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signals from ICT and CRYRADIO are now connected to AIDA2 and AIDA5 respectively. ICT is set to factor 200 and CRYRADIO to 40 for now.
(AIDA3 --> electron cooler) |
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Mon Jun 16 08:17:41 2025, JG, D2 consumption
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The current bottle of D2 was installed on friday 06.06. at around 12:00. I assume we started at 200 bar.
Right now we have 50 bar remaining in this bottle (16.06. at 8:00).
This is an average consumption of ~15 bar/day |
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Fri Apr 18 16:18:33 2025, JM, D+D BBN energies test 16x
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D+D minimum energy Ecm = 150 keV which corresponds to Ed=150 keV/u or Ed=300 keV. Therefore we need a threshold below this.
Test 1 - Current status
Current slow comparator threshold is 0x64 (1 MeV). ADC data items rate in all FEEs is essentially zero with this threshold. (except aida03 and |
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Tue Mar 1 05:23:02 2022, JM, EM, Current status
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06:20
Servo motors moved to fully out position as some work on the beam was neccessary. Beam injection had dropped from ~9e7 to around 1e7. Potentiometer
reads 19.10 mm. |