 Sun Feb 27 16:30:35 2022, Rui-Jiu Chen, Yuri, Change target temperature again
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1. change T from 95 k to 140 k.
2. keep T at 140k for 15 minutes.
3. change T from 140 k to 95 k. |
Sun Feb 27 17:00:45 2022, Rui-Jiu Chen, Yuri, current status 13x
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Ring current ~7.76e7 particles/s
SW3
- Merger OK |
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Sun Feb 27 18:46:42 2022, Rui-Jiu Chen, Yuri, Change target temperature
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time Temperature
E1 current(A) E1 frequency(Hz)
19:06 170 |
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Sun Feb 27 19:01:02 2022, Rui-Jiu Chen, Yuri, Current status 13x
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Ring current ~5.96e7 particles/s
SW3
- Merger OK |
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Sun Feb 27 20:19:06 2022, Rui-Jiu Chen, Yuri, open the valves of target.
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Sun Feb 27 20:38:06 2022, Rui-Jiu Chen, Yuri, Current status 13x
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Ring current ~5.0e7 particles/s
SW3
- Merger OK |
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Fri Feb 25 01:12:49 2022, Rui-Jiu Chen, Alex , Check 13x
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Still no beam in CRING.
Motor fully out position.
SW3 |
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Thu Feb 24 23:15:25 2022, Rui-Jiu Chen, Alex, Problems with ion souce.
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Fri Feb 25 00:00:40 2022, Rui-Jiu Chen, Alex, Check 14x
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There are some problems with ion source. No beam in CRYING.
Motor fully out position.
SW3 |
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Fri Feb 25 03:01:11 2022, Rui-Jiu Chen, Alex, check 14x
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Still no beam in CRING.
Motor fully out position.
SW3 |
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Fri Feb 25 03:20:29 2022, Rui-Jiu Chen, Alex, Current status
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Gleb Vorobyev tried for few hours to fix the ion source but without success.
So, there will be no beam in CRYRING during this night shift. Today at about 08:00 the efforts to fix the ion source will be restarted. |
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Fri Feb 25 05:04:16 2022, Rui-Jiu Chen, Alex, check 14x
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Still no beam in CRING.
Motor fully out position.
SW3 |
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Wed Jun 12 07:16:47 2024, RSS, YL, JM, TD, CB, Status 6x
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07:56 Gleb has taken the beam to try settings for the 5+ charge state. As soon as the target is ready, the 1+ charge state will be given back.
Detectors have been moved out for safety
08:10
Run 63
DSSSD bias & leakage current OK - attachment 1
FEE64 temperatures OK - attachment 2
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Wed May 10 19:06:18 2023, RSS, TD, V-I test
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To test the detectors, adaptors were installed on the feed through flanges. A negative bias voltage was applied in steps of 10 V from 0 to 150 V. The
V-I plots are attached for the four detectors. Three detectors - top right, top left, and bottom left (in the direction of the beam) - are fine. For the
bottom right detector (in the direction of the beam), the current was fluctuating and was considerably high (1st test). The adaptors connecting to this |
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Thu May 11 21:22:54 2023, RSS, TD, V-I test 7x
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Today, the foil was opened, the pins on the bottom right detector were checked and looked fine, the right-hand arm was moved a bit in and then out, and
the foil was tightly closed again. The negative bias voltage was applied from 0 to 50 V in steps of 10 V. During the measurement, the lights in the cave
were switched off to ensure no leakage current from the light*. The results are shown in Attachment 1. To condition the detector, it was left at a negative |
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Fri May 12 16:24:20 2023, RSS, TD, V-I test 8x
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Since yesterday evening, the bottom right detector was at -150 V. In the morning, the current was quite stable ~ 6.77 uA. The bias was switched off,
the foils opened, both of the detector arms were moved in and out three times, and the chamber was tightly covered again. A negative bias voltage was applied
from 0 to 150 V in steps of 10 V one by one to all four detectors, and the V-I results can be seen in Attachments 1-4. All detectors seem to be |
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Sat Jul 22 09:19:59 2023, RSS, TD, Thermocouples connected 10x
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10.20 Pirani 1e-03mbar IE514 3.26e-08mbar
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Sun Jul 23 10:13:48 2023, RSS, TD, Building tent
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11.15 Pirani 1.0e-03mbar IE514 2.72e-08mbar
16.35 Pirani 1.0e-03mbar IE514 2.61e-08mbar |
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Mon Jul 24 10:40:14 2023, RSS, TD, Pump down continues
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11.40 Pirani 1.00e-3 mbar IE514 2.23e-08mbar
15.15 7d/24h vacuum plots |
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Tue Feb 22 12:01:46 2022, RSS, OF, ML, CB, Beam OFF, Target ON Run 54 9x
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01:00
Beam optimisation since 09:25.
Target ON and open to the ring |