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| Nuclear hyperfine mixing in 229Th89+ 2025 |
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Message ID: 62
Entry time: Thu Jun 26 19:01:46 2025
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| Author: |
Carsten, Jan, Simon |
| Category: |
Runs |
| Subject: |
Late shift 26.06. |
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Scan parameters:
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scan range | 551.91 - 549.41
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positions | 501
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step width | 0.005nm
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advance after | 15 rising edges
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iterations | 1
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rev. frequency | 1.54315e6
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Time | Part. Det. Int | SIS-intensity | accumulations in ESR | cooler-HV PTB K250 | cooler-HV PTB red | cooler-HV orange | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time (laser shots) | n loops | checked laser position | mesytec rate ok | comments
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19:15 | 23000 | 1.5-3.5 e9 | 33 | 104522 | 104526 | 104526 | 142 | 170 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | TE slits at -10 and +10, SIS intensity unstable
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19:41 | 19000 | 3.3e9 | 30 | 104522 | 104526 | 104526 | 143 | 171 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | TE slits at -7 and +7
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20:08 | 17500 | 3.3e9 | 25 | 104522 | 104526 | 104526 | 144 | 172 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | -
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20:24 | 7000 | 3.3e9 | 25 | 104522 | 104526 | 104526 | 145 | 173 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | low Part. Det. Int maybe due to wrond position of part. det.
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21:19 | 7000 | 3.5e9 | 25 | 104522 | 104526 | 104526 | 146 | 174 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | TE slits at -8 and +8
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21:40 | 14000 | 3.3e9 | 25 | 104522 | 104526 | 104526 | 147 | 175 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes | adjusted particle detector position
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22:04 | 19500 | 3.3e9 | 40 | 104522 | 104526 | 104526 | 148 | 176 | 551.91 - 549.41 | 501 | 15 | 1 | yes | yes |
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After the scan at 22:04 teh FCU new was new calibrated. For this MEdusa was stopped and reopened in the laser lab. This stops the Labview server, and as a consequence the the connection to the MBS was lsot. Then, MBS needs to be restarted and the online data is cleared. Such an intervention should avoided as good as possible.
A pratical solution for beamtimes with such long data taking is still pending.
When trying to restart MBS MBS completlz hung up also resl etc did not work. Crate powered down and restarted. |