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Entry  Sun Jun 22 21:36:48 2025, Carsten, Finn, Zac, Esther, Runs, First laser scans 

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


Note: When doing the accumulation in the ESR the particle number (observed in Lassie Monitor) seems to saturate. This is not actually the case but just an effect of the real signal being buried in other species.

Time Part. Det. Int SIS-intensity accumulations in ESR cooler-HV PTB cooler-HV ? LMD-DAQ1 Files LMD-DAQ2 Files scan range(nm) number of positions dwell time (laser shots) n loops checked laser position comments
22:33 10800 1.25e9 60 104513 104509 106 0136 551.91 - 549.41 501 15 1 yes -
22:50 10800 1.3e9 60 104513 104509 107 0137 551.91 - 549.41 501 15 1 yes -
23:07 14000 1.3e9 60 104513 104509 108 0138 551.91 - 549.41 501 15 1 yes -
23:24 11500 1.3e9 60 104513 104509 109 0139 551.91 - 549.41 501 15 1 yes -
23:40 13100 1.3e9 60 104513 104509 110 0140 551.91 - 549.41 501 15 1 yes -
23:57 13100 1.3e9 60 104513 104509 111 0141 551.91 - 549.41 501 15 1 yes -
00:14 12700 1.4e9 60 104513 104509 112 0142 551.91 - 549.41 501 15 1 yes -
00:31 13500 1.4e9 60 104513 104509 113 0143 551.91 - 549.41 501 15 1 yes -
00:48 10700 1.25e9 60 104513 104509 114 0144 551.91 - 549.41 501 15 1 yes -
01:05 - 1.0e9 60 104513 104509 115 0145 551.91 - 549.41 501 15 1 yes BAD FILE(?): beam was killed as some point during the scan, we don't know why; no counts on the particle detector
Entry  Mon Jun 23 10:59:36 2025, Julian, Lukas, Zsolt, Nadine, Konstantin, Runs, Scan routine 
-Start new injection
->wait for 60 injections to be complete
->note down SIS intensity (at extraction)
->observe Schottky to ensure proper bunching
->check laser position (should be well-centered)
-open file, start Go4
->do '@openfile' in both mbs windows
->start acquisition (green arrow) in both Go4 instances (check indicator 'Current Ev/s' at the bottom, should be green, not red)
->start laser scan
->reset Ch3 of the particle detector (in the electronics hut)
->check laser position (disappears at start of scan then drifts through the image from the left)
-when laser scan is finished:
->stop Go4 acquisition (big red 'STOP' button in the top row)
->do '@closefile' in both mbs windows
->check counts on particle detector
-update elog
-repeat
Entry  Tue Jun 24 18:49:18 2025, Carsten, Rima, Nils, Simon, Runs, Second attempt (Late shift 24.06.) 

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



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
19:03 14800 2.7e9 60 104510 104514 104514 118 147 551.91 - 549.41 501 15 1 yes TE beamline slits -30 +30
19:22 14900 2.7e9 60 104510 104514 104514 119 148 551.91 - 549.41 501 15 1 yes -
19:40 14500 2.7e9 60 104510 104514 104514 120 149 551.91 - 549.41 501 15 1 yes TE beamline slits -20 +20
19:58 13800 2.0e9 60 104510 104514 104514 121 150 551.91 - 549.41 501 15 1 yes -
20:18 10800 2.1e9 60 104510 104514 104514 122 151 551.91 - 549.41 501 15 1 yes -
20:37 10100 2.1e9 60 104510 104514 104514 123 152 551.91 - 549.41 501 15 1 yes -
20:56 10500 2.1e9 60 104510 104514 104514 124 153 551.91 - 549.41 501 15 1 yes -
21:15 9000 2.2e9 60 104510 104514 104514 125 154 551.91 - 549.41 501 15 1 yes after this we change to 45 injections to give more cave access to HHT
21:37 11500 2.3e9 45 104510 104514 104514 126 155 551.91 - 549.41 501 15 1 yes small pause for HHT
22:13 13400 2.5e9 45 104510 104514 104514 127 156 551.91 - 549.41 501 15 1 yes small pause for HHT, cooling time in SC7 increased from 20s to 28 s
Entry  Tue Jun 24 22:24:36 2025, Carsten, Finn, Hiroshi, Esther, Rodolfo, Runs, 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
Entry  Thu Jun 26 19:01:46 2025, Carsten, Jan, Simon, Runs, Late shift 26.06. 

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




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
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
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
20:08 17500 3.3e9 25 104522 104526 104526 144 172 551.91 - 549.41 501 15 1 yes yes -
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.
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
21:40 14000 3.3e9 25 104522 104526 104526 147 175 551.91 - 549.41 501 15 1 yes yes adjusted particle detector position
22:04 19500 3.3e9 40 104522 104526 104526 148 176 551.91 - 549.41 501 15 1 yes yes


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.
Entry  Thu Jun 26 22:51:04 2025, Hendrik, Finn, Runs, Nightshift data runs 
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.

23:10 Quadrupole magnet stopped working, lost beam in ESR. Contacted on-call ESR service

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
0:15 8000 1.5-3.5 e9 30 104522 104526 104526 150 177 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
0:28 20900 1.5-3.5 e9 30 104522 104526 104526 151 178 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
0:59 19000 2.3-2.7 e9 30 104522 104526 104526 152 179 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
1:14 14500 1.5-3.5 e9 30 104522 104526 104526 153 180 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
1:30 19800 1.5-3.5 e9 30 104522 104526 104526 154 181 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
1:45 18000 1.5-3.5 e9 30 104522 104526 104526 155 182 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
2:01 6600 1.5-3.5 e9 30 104522 104526 104526 156 183 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
2:18 14500 1.5-3.5 e9 30 104522 104526 104526 157 184 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
2:36 14700 1.5-3.5 e9 30 104522 104526 104526 158 185 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
2:45 6000 1.5-3.5 e9 30 104522 104526 104526 159 186 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
3:00 5500 1.5-3.5 e9 30 104522 104526 104526 160 187 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
3:17 5200 1.5-3.5 e9 30 104522 104526 104526 161 188 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
3:34 14300 1.5-3.5 e9 30 104522 104526 104526 162 189 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
3:50 17200 1.5-3.5 e9 30 104522 104526 104526 163 190 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
4:07 5000 1.5-3.5 e9 30 104522 104526 104526 164 191 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
4:22 16500 1.5-3.5 e9 30 104522 104526 104526 165 192 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
4:39 14000 1.5-3.5 e9 30 104522 104526 104526 166 193 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
4:55 17000 1.5-3.5 e9 30 104522 104526 104526 167 194 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
5:12 16500 1.5-3.5 e9 30 104522 104526 104526 168 195 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
5:26 14000 1.5-3.5 e9 30 104522 104526 104526 169 196 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
5:43 13100 1.5-3.5 e9 30 104522 104526 104526 170 197 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
5:56 16500 1.5-3.5 e9 30 104522 104526 104526 171 198 551.91 - 549.41 501 15 1 yes yes TE slits at -10 and +10, SIS intensity unstable
Entry  Fri Jun 27 06:13:02 2025, Esther, Konstantin, Runs, Early shift - data taking 
Notes:
1. TE slits at -10 and +10
2. SIS intensity unstable until about 9:00 after that it became much more stable
3. brief interruption between 09:30 and 10:03 due to interlock issue at SIS

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
06:15 16300 1.5-3.5 e9 30 104522 104526 104526 172 199 551.91 - 549.41 501 15 1 yes yes
06:30 13500 1.5-3.5 e9 30 104522 104526 104526 173 200 551.91 - 549.41 501 15 1 yes yes
06:44 4000 1.5-2 e9 30 104522 104526 104526 174 201 551.91 - 549.41 501 15 1 yes yes beam scraped vertically with scraper 1 after end of laser scan (see entry 66), scraper left in but tilted to allow for injection
07:05 14800 2-3.5 e9 30 104522 104526 104526 175 202 551.91 - 549.41 501 15 1 yes yes beam scraped horizontally with scraper 1 after end of laser scan (see entry 66), scraper 1 moved back out
07:25 14000 1.1-2.6 e9 30 104522 104526 104526 176 203 551.91 - 549.41 501 15 1 yes yes beam scraped horizontally with scraper 2 after end of laser scan (see entry 66), scraper 2 left in but tilted to allow for injection
07:44 4200 1-2.5 e9 30 104522 104526 104526 177 204 551.91 - 549.41 501 15 1 yes yes beam scraped horizontally with scraper 2 after end of laser scan (see entry 66), scraper 2 moved back out
08:12 5700 1-2.5 e9 30 104522 104526 104526 178 205 551.91 - 549.41 501 15 1 yes yes !!file in DAQ1 not closed after end of scan!!; ~5 injections missing because nothing came from SIS
08:27 16000 1.5-3 e9 30 104522 104526 104526 178 206 551.91 - 549.41 501 15 1 yes yes !!file in DAQ1 still open from last scan!!
08:44 11700 1.5-3 e9 30 104522 104526 104526 179 207 551.91 - 549.41 501 15 1 yes yes
09:00 15600 2.6-3 e9 30 104522 104526 104526 180 208 551.91 - 549.41 501 15 1 yes yes
09:24 6500 2.8 e9 30 104522 104526 104526 181 209 551.91 - 549.41 501 15 1 yes yes
10:13 14600 2.2 e9 30 104522 104526 104526 182 210 551.91 - 549.41 501 15 1 yes yes
10:31 183 211 BAD FILES: ESR not stopped in SC9, injection during laser scan
10:39 14500 2.6 e9 30 104522 104526 104526 184 212 551.91 - 549.41 501 15 1 yes yes
10:55 15400 2.3 e9 30 104522 104526 104526 185 213 551.91 - 549.41 501 15 1 yes yes
11:11 15500 2.6 e9 30 104522 104526 104526 186 214 551.91 - 549.41 501 15 1 yes yes
11:27 15800 2.5 e9 30 104522 104526 104526 187 215 551.91 - 549.41 501 15 1 yes yes
11:41 5200 1.4-2.6 e9 30 104522 104526 104526 188 216 551.91 - 549.41 501 15 1 yes yes
11:56 16500 2.6 e9 30 104522 104526 104526 189 217 551.91 - 549.41 501 15 1 yes yes
12:12 15000 2.9 e9 30 104522 104526 104526 190 218 551.91 - 549.41 501 15 1 yes yes
12:27 15000 2.8 e9 30 104522 104526 104526 191 219 551.91 - 549.41 501 15 1 yes yes
12:44 15800 2.9 e9 30 104522 104526 104526 192 220 551.91 - 549.41 501 15 1 yes yes
13:21 5400 2.3 e9 30 104522 104526 104526 193 221 551.91 - 549.41 501 15 1 yes yes
13:42 4800 2.6 e9 30 104522 104526 104526 194 222 551.91 - 549.41 501 15 1 yes yes
13:59 6200 2.6 e9 30 104522 104526 104526 195 223 551.91 - 549.41 501 15 1 yes yes
Entry  Fri Jun 27 14:23:39 2025, Nils, Wilfried, Carsten, Julian, Runs, Runs afternoon shift 27.06. 
15:30 We have a break due to an issue at UNILAC (quadrupole failed). Also radiation safety interlock was triggered at the fragment separator. This also pushed a faradaycup into the ESR (GE01DC3VP).
Just before the issue during the last bunching, the peak was misaligned to the marker in the Schottky. The marker was sitting on the right flank. So the electron-cooled 229Th did not match with the bunching frequency anymore. We are preparing to adjust the cooler voltage to fix this. For some reason the frequency recovered and is back to its original position. However, our accumulations do not seem to work as well as before, we stagnate much earlier and at a much lower level.

15:50 Beam is back, Carsten is still investigating the drop in intensity we saw before the UNILAC failure.

17:15 TE slits were on -8 and +8, opening to -11 and +11, no change to acquisition pattern, something is still wrong

18:00 We were locked out by HHT people for 30+ mins

18:27 We had to call in ESR support

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
14:24 15800 2.74 e9 30 104524 104527 104528 196 224 551.91 - 549.41 501 15 1 yes yes Carsten optimizing beam at HKR with ESR colleagues
14:24 6800 1.16 e9 30 104524 104527 104528 197 225 551.91 - 549.41 501 15 1 yes yes Carsten is back in measurement hut
16:30 1100 1.1 e9 40 104524 104527 104528 198 226 551.91 - 549.41 501 15 1 yes yes Searching for reason for small particle number
17:00 1200 0.5 e9 30 104524 104527 104528 199 227 551.91 - 549.41 501 15 1 yes yes
19:57 7800 1e9 30 104524 104527 104528 200 228 551.91 - 549.41 501 15 1 yes yes Restarting some things at ESR
20:16 6800 1.5e9 30 104524 104527 104528 201 229 551.91 - 549.41 501 15 1 yes yes Restarting some things at ESR
20:41 7200 1.5e9 30 104524 104527 104528 202 230 551.91 - 549.41 501 15 1 yes yes Restarting some things at ESR
21:28 6000 2.65e9 30 104524 104527 104528 203 231 551.91 - 549.41 501 15 1 yes yes
21:47 6600 2.7e9 30 104524 104527 104528 204 232 551.91 - 549.41 501 15 1 yes yes
22:08 17000 2.5e9 30 104524 104527 104528 205 233 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
Entry  Fri Jun 27 22:14:35 2025, Anton, Finn, Carsten, Runs, Runs night shift 27.06. 28.06 
22:10 SIS Trafo GS09DT scale was changed to 4e8 (not just the lassie monitor)
23:50 Ausfall ESR: GE01 KP01 bis KP05 und KP22 bis KP24; Korrekturelement: GE02KX6 und GE01KX2; beam loss during measurement
01:45 reser press air Scrapers: GE02DD2_G (sc8,11); GE02DS03HG(sc7,8,11); GE01DD2IG(was sc7,10,11)(now7,8,11)
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
22:08 17000 2.5e9 30 104524 104527 104528 205 233 551.91 - 549.41 501 15 1 yes yes TE slits -6 +6
22:27 7200 4e8 30 104524 104527 104528 206 234 551.91 - 549.41 501 15 1 yes yes TE slits -6 +6 ! small peak on right side, not good scraped
23:19 6000 2.5e9 30 104524 104527 104528 207 235 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
23:35 15000 2.3e9 30 104524 104527 104528 208 236 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
23:47 00 2.3e9 30 104524 104527 104528 209 237 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \ scan not compete, beam loss during measurement
00:17 6200 2.7e9 30 104524 104527 104528 210 238 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
00:45 6400 2.6e9 30 104524 104527 104528 211 239 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
01:00 5100 2.75e9 30 104524 104527 104528 212 240 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
01:15 5200 2.6e9 30 104524 104527 104528 213 241 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
01:45 4900 2.3e9 30 104524 104527 104528 214 242 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \bigger peak on right side, badly scraped
01:58 12600 2.25e9 30 104524 104527 104528 215 243 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
02:13 12000 2.4e9 30 104524 104527 104528 216 244 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
02:28 13900 2.45e9 30 104524 104527 104528 217 245 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \small peak on right side, badly scraped
02:48 17000 2.45e9 30 104524 104527 104528 218 246 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
02:58 13500 2.45e9 30 104524 104527 104528 219 247 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
03:13 14900 2.5e9 30 104524 104527 104528 220 248 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
03:27 5200 2.5e9 30 104524 104527 104528 221 249 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
03:42 13000 2.5e9 30 104524 104527 104528 222 250 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
04:08 14300 2.9e9 30 104524 104527 104528 223 251 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
04:23 15400 2.9e9 30 104524 104527 104528 224 252 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
04:38 13800 2.9e9 30 104524 104527 104528 225 253 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
05:03 12800 2.5e9 30 104524 104527 104528 226 254 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
05:23 3900 2.6e9 30 104524 104527 104528 227 255 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
05:38 11200 3.e9 30 104524 104527 104528 228 256 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7
05:53 3900 2.5e9 30 104524 104527 104528 229 257 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped
06:08 11700 low.intensity 30 104524 104527 104528 230 258 551.91 - 549.41 501 15 1 yes yes TE slits -7 +7 \badly scraped

During whole night shift scraping right peak did not work consistently. Remaining intensity varied from similar peak height compared to torium down to about 20%.
Entry  Sat Jun 28 06:29:58 2025, Stefan, Simon, Konstantin, Runs, Morning shift 28.06. 
6:30 Problem with ion source, on-call service is called
7:30 There is a short in the ion source and it needs to be changed. Expected down time about 2h
10:30 Ion source was successfully changed, but while ramping up the source a power supply failed. Next on-call service is on their way to GSI.
13:00 ions are back


We changed the dye as the laser intensity was quite low. That didnt help, so Konstantin came in to change the dye cell. That did help.

No scans during morning shift.
Entry  Sat Jun 28 15:28:22 2025, Carsten., Uwe , Runs, Runs with new scan range 
22:10 SIS Trafo GS09DT scale was changed to 4e8 (not just the lassie monitor)
23:50 Ausfall ESR: GE01 KP01 bis KP05 und KP22 bis KP24; Korrekturelement: GE02KX6 und GE01KX2; beam loss during measurement
01:45 reser press air Scrapers: GE02DD2_G (sc8,11); GE02DS03HG(sc7,8,11); GE01DD2IG(was sc7,10,11)(now7,8,11)
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 TE slits comments
15:25 >20000 2.5e9 30 - - - 260 234 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 detector started too late
15:52 15200 2.5e9 30 - - - 261 235 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 SIS injection fluctuating
16:09 6000 3.3e9 30 - - - 262 236 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 accumulation curve in ESR much flatter
16:31 5800 3.0e9 30 - - - 264 237 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 data not in online DAN; lmd-file: DAQ2_0263.lmd is empty
16:47 10000 3.0e9 30 - - - 265 238 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 okay
17:10 15500 3.0e9 35 - - - 266 239 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 okay
17:45 16000 3.2e9 35 - - - 267 240 550.610 - 548.110 501 15 1 yes yes TE slits -7 +7 okay
18:11 4800 3.0e9 40 - - - 268 241 550.610 - 548.110 501 15 1 yes yes TE slits -6 +6 data not in online DAN
19:00 4650 3.0e9 40 - - - 269 242 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 SIS ions low for first 8 to 10 injections
19:40 14900 3.0e9 40 - - - 270 243 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 3-5 empty shots during filling
19:56 14800 2.5e9 40 - - - 271 244 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 3-5 empty shots during filling
20:10 5600 2.3e9 40 - - - 272 245 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 3-5 empty shots during filling; SIS -> ESR injections 1-3x10**-9 particles variation; accelerator stopped after half filling of ESR; took data for measurement
21:55 14300 2.5e9 35 - - - 273 246 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5




17:11 HHT access
17:20 beam back, but problems with SIS intensity
17:35 intensity good, again. 3x10**9 particles in SIS |-
18:30 SIS intensity dropped to 1x10**8 particles
18:45 SIS intensity recovered to 3.75x10**9 particles

Starting from 18:45 slits are set asymmetric:
The dipole magnet TE4MU1 which is in front of our TE slit pair turns to the right. Thus, lower momentum ions are also on the right side. 229Pa89+ has a higher Z=91 than 229Th89+ (Z=90).
Therefore, in the thick target Z=91 , Pa looses more energy than 229Th. With the asymmetric setting we try to further minimize Pa contaminants.
20:05 HHT access
20:15 SIS dipol failure; 1-2h no beam expected; on-call-technical-service is informed
21:10 beam is back. SIS dipole / power supply a fuse needed to be exchanged; we leave the beam for 30min to FRS exclusively
21:35 start taking data again
Entry  Sun Jun 29 03:03:56 2025, Nadine, Finn, Runs, Night shift runs with laser 
around 22:00 water cooling circuit failure of ESR electron cooler--> ~1h downtime
Wavemeter frequently overexposed around 549,3nm; other wavelengths are fine

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 TE slits comments
23:25 13500 2.5e9 40 - - - 274 247 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
23:42 5000 2.5e9 40 - - - 275 248 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
00:02 5700 2.8e9 40 - - - 276 249 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
00:26 5000 3e9 30 - - - 277 250 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
00:40 5300 2.8e9 30 - - - 278 251 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
00:55 5550 3e9 30 - - - 279 252 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
01:13 16800 3e9 40 - - - 280 253 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
01:32 13300 3e9 50 - - - 281 254 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
01:50 13700 3e9 40 - - - 282 255 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
02:07 14450 3e9 40 - - - 283 256 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
02:24 13800 2.8e9 40 - - - 284 257 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
02:41 12600 2.8e9 40 - - - 285 258 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 not properly scraped; right peak -100dB
02:58 13200 3e9 40 - - - 286 259 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
03:15 13700 2.7e9 40 - - - 287 260 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
03:32 3400 2.7e9 40 - - - 288 261 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
03:45 5000 2.7e9 40 - - - 289 262 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
04:12 3700 3e9 50 - - - 290 263 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
04:30 4100 3e9 40 - - - 291 264 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
04:47 12800 3e9 40 - - - 292 265 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
05:10 2800 2.7e9 60 - - - 293 266 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 file 266 was not closed until next file should be opend! Happens at 5:24 in the Morning Smile
05:28 12200 2.7e9 40 - - - 294 267 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
05:57 15000 2.7e9 40 - - - 295 268 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
06:09 00 2.7e9 40 - - - 296 269 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
Entry  Sun Jun 29 06:11:49 2025, Stefan, Konstantin, Runs, Morning Shift 29.06. 


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 TE slits comments
06:09 3300 2.7e9 40 - - - 296 269 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
08:49 16000 2.5e9 40 - - - 297 270 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
09:10 4100 2.6e9 40 - - - 298 271 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 slightly modified the laser position, which was necessary to ensure proper laser-ion superposition after retuning the laser, some bad injections from SIS
09:2X 16000 2.8e9 40 - - - 299 272 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
09:59 2200 2.4e9 40 - - - 300 273 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 One bad injection cycle between the previous measurement and this one. Particle detector reset lately
10:33 3800 2.0e9 40 - - - 301 274 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
10:52 4200 2.1e9 40 - - - 302 275 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
11:17 4100 2.1e9 30 - - - 303 276 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
11:41 4400 2.1e9 30 - - - 304 277 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
11:53 4600 2.1e9 30 - - - 305 279 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 Bad (empty) injections from SIS
12:19 4600 2.5e9 30 - - - 306 279 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 Potentially problems with transfer beam line
12:33 3700 2.1e9 30 - - - 307 280 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
12:50 4300 2.1e9 30 - - - 308 281 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
13:07 18300 2.5e9 30 - - - 309 282 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
13:30 2300 2.5e9 30 - - - 310 283 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5
14:05 1 2.5e9 30 - - - 311 284 550.610 - 548.110 501 15 1 yes yes TE slits -9 +5.5 Particle detector hasn't moved in

We did a recalibration of the FCU. After this (7:40) a SIS power supply failure was detected, and we are waiting now for the on-call service.
HHT cave access around 10:06 during a short break due to a source failure.
Every once in a while we have empty shots from SIS.
Entry  Sun Jun 29 18:04:11 2025, Carsten, Simon, Runs, Late shift 29.06. 
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
18:10 18000 2.8e9 30 104525 - - 287 314 548.51 - 548.01 201 15 3 yes Part. Det Int. after 3 loops
18:26 14000 2.8e9 30 104525 - - 288 315 548.51 - 548.01 201 15 2 yes Part. Det Int. after 2 loops
18:41 16000 2.8e9 35 104525 - - 289 316 548.51 - 548.01 201 15 2 yes -
18:57 21000 2.0e9 40 104525 - - 290 317 548.51 - 548.01 201 15 3 yes -
19:14 13000 2.0e9 40 104525 - - 291 318 548.51 - 548.01 201 15 3 yes -
19:53 15000 2.6e9 35 104525 - - 292 319 548.51 - 548.01 201 15 2 yes -
20:08 15000 2.0e9 40 104525 - - 293 320 548.51 - 548.01 201 15 2 yes -
20:25 19000 2.4e9 40 104525 - - 294 321 548.51 - 548.01 201 15 3 yes -
20:44 3000 2.4e9 45 104525 - - 295 322 548.51 - 548.01 201 15 2 yes very low intensity, so we kept Go4 off and only ran mbs
21:04 23000 2.8e9 30 104525 - - 296 323 548.51 - 548.01 201 15 3 yes
21:21 24000 2.8e9 30 104525 - - 297 324 548.51 - 548.01 201 15 3 yes
21:39 18000 2.8e9 30 104525 - - 298 325 548.51 - 548.01 201 15 3 yes
21:57 6400 2e9 40 104525 - - 299 326 548.51 - 548.01 201 15 2 yes low intensity, no Go4


All Particle detector values are after the respective number of scans.

AT 1700 Bernd came in since we couldn't properly accumulate. Bernd adjusted the deceleration HF and slightly changed the extraction kicker from 1.9mrad to 1.7 mrad. High intensity of 229/89.

At 19:35 again problems with transmission SIS -> ESR. Put the Kciker (GTE3Mu1/HIKICK) back to 1.9 mrad (orignal value).
Entry  Sun Jun 29 22:06:19 2025, Carsten, Alex, Hendrik, Runs, Night shift 29.06.  
[TABLE border="1"]
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 |-
22:16 | 4800 | 2e9 | 30 | 104525 | - | - | 300 | 327 | 548.51 - 548.01 | 201 | 15 | 2 | yes | only few ions, did not start Go4 |-
22:28 | 9000 | 2e9 | 15 | 104525 | - | - | 301 | 328 | 548.51 - 548.01 | 201 | 15 | 2 | yes | After this run: Shaky SIS intensity, cathode is being changed |-
22:53 | 7000 | 2e9 | 35 | 104525 | - | - | 302 | 329 | 548.51 - 548.01 | 201 | 15 | 2 | yes |-|-
[/TABLE] 
23:20 Failure of GE01KP04, GE01KP05, GE01KP22 (or GE01KP24) devices in the ESR.
Problems with gtemu3-hick (??) , take injections since 
01:49 Bernd tried to make things work by switching off and on some of the dipole correction coils. He was even able to get a quite good intensity by leaving one of the coils switched off (although with a slight shift of frequencies visible in Schottky spectrum) but then the ESR electron cooler has failed probably due to problems with the cooling water. So, the decision was taken to stop the measurement at this point. The laser was switched off.
Entry  Fri Jun 6 14:27:10 2025, Rodolfo, Konstantin, Laser, MRC Beam Stabilization Presettings MRC-Settings_2025_06-06.JPGAFG_Settings_Thorium_2025-06-06.jpgMRC-Controller_Settings_Thorium_2025-06-06.jpg
These are the settings for the Beam Stabilization from MRC.

Laser-beam energy ca. 18 mJ @ 275 nm
Entry  Wed Jun 18 03:12:25 2025, Rodolfo, Laser, Beam Stabilization MRC-Settings_2025_06-18.JPG
The laser beam pointing has changed, even thought the MRC settings are the same as given in Entry 5 (this elog). This could be caused by a droping of the laser output energy which is now 13,8 mJ @275 nm
Entry  Wed Jun 18 07:59:00 2025, Julien, Konstantin, Laser, Phase-offset IMG_3889.jpgIMG_3888.jpgIMG_3891.jpgIMG_3892.jpg 
We recognized that the output power of the pump laser was instable when externally triggered with 200kHz (stand-bye frequency of ESR). Therefore, we changed the coarse timing offset of the pockels cell trigger compared to the flash lamp pulse from 215µs to 219.9µs. 
Thereby, the output power increased from ~600mJ to 620mJ, and the PTP stability improved from 15% to 10%. The RMS stability improved from 2% to 1.2 %. With these settings we had UV pulse energies of 20mJ.
Entry  Wed Jun 18 08:07:17 2025, Julien, Konstantin, Laser, new FCU Calibration 2025_06_18_FCU_Cal_Table.JPG2025_06_18_FCU_Cal_Plot.JPG 
UV power was not stable but dropping from ~18 mW to 13 mW after opening COBRA shutters.
New calibration of frequency conversion unit:

Wavelength/nm       Position/Steps
554,0001            383029
553,0000            386604
552,0001            390229
551,0000            393954
550,0001            397679
549,0001            401404
548,0001            405104
547,0001            408829

now stable at ~19-20 mJ depending on wavelength

Table of dataset: Attachement 1
Plot of dataset: Attachement 2
Entry  Fri Jun 20 11:25:32 2025, Julien, Kristian, Konstantin, Laser, Automated laser scans  
In contrast to entry E12, the cabling for the automated start of the laser scan is now connected to IO3 of sddsc221.
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