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  Nuclear hyperfine mixing in 229Th89+ 2025  Not logged in ELOG logo
Message ID: 59     Entry time: Tue Jun 24 22:24:36 2025
Author: Carsten, Finn, Hiroshi, Esther, Rodolfo 
Category: Runs 
Subject: Data taking (night shift 24.06.) 

Scan parameters:
scan range551.91 - 549.41
positions501
step width0.005nm
advance after15 rising edges
iterations1
rev. frequency 1.54315e6


Notes:
1. NTCAP was only started after the fourth scan. The file timestamp is '2025-06-25_00-02-08'.
2. Beam was lost at 03:45 and could not be recovered by the operators. On-call service was called but they have to replace a part, current estimate is 2-3 hours.

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 comments
22:39 13500 2.4e9 60 104510 104514 104514 128 157 551.91 - 549.41 501 15 1 yes 60 injections, cooling time (SC 7) 28s -> 32s
23:00 11500 2.4e9 45 104510 104514 104514 129 158 551.91 - 549.41 501 15 1 yes 45 injections
23:20 10500 2.4e9 45 104510 104514 104514 130 159 551.91 - 549.41 501 15 1 yes
23:44 9100 2.4e9 45 104510 104514 104514 131 160 551.91 - 549.41 501 15 1 yes
00:05 14000 2.4e9 60 104510 104514 104514 132 161 551.91 - 549.41 501 15 1 yes back to 60 injections
00:28 14300 2.4e9 75 104510 104514 104514 133 162 551.91 - 549.41 501 15 1 yes 75 injections, mesytec channel threshold 0-3 set 255
01:26 13200 2.4e9 75 104510 104514 104514 134 163 551.91 - 549.41 501 15 1 yes there was an interruption at the source, took some time to get the beam back
01:48 10500 2.3e9 75 104510 104514 104514 135 164 551.91 - 549.41 501 15 1 yes
02:10 12400 2.3e9 75 104510 104514 104514 136 165 551.91 - 549.41 501 15 1 yes
02:33 9600 2.4e9 75 104510 104514 104514 137 166 551.91 - 549.41 501 15 1 yes
02:55 10000 2.4e9 75 104510 104514 104514 138 167 551.91 - 549.41 501 15 1 yes
03:18 9600 2.4e9 75 104510 104514 104514 139 168 551.91 - 549.41 501 15 1 yes
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