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Entry  Mon May 30 02:12:20 2022, Max, Patrick, ~Konstantin, Ragan, Ken, Runs, runs night shift 30.05. 2022-05-30_resonance_10_loops.png48_AM.png
These are the first runs of the substitute beamtime.

Time ESR-intensity ESR-intensity after orbit change cooler-HV LMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm) step width increment (nm) dwell time(s) n loops comments
02:00 ? 8.0e6 223217 632 8158 601.95 - 601.734 0.005 5s 5 Resonance found in first scan. The resonance is much broader due to a broader ion beam.
02:28 ? 7.0e6 223217 633 8159 601.9 - 601.7 0.005 5s 5 Same injection.
02:52 ? 6.3e6 223217 634 8160 601.9 - 601.7 0.005 5s 5 Same injection. Adjusted gates in go4.
03:14 ? 5.6e6 223439 637 8163 601.9 - 601.7 0.005 5s 5 Same injection. Auto-impedance enabled -> correct voltages. NTCAP started shortly after scan start.
03:35 ? 3.0e5 ? (under range) 223439 639 8164 601.9 - 601.7 0.005 5s 5 Scraped the lower charge state beam by moving S1HA to pos. -30 (from the left).
04:50 ? 1.1e7 223439 640 8165 601.9 - 601.7 0.005 5s 5 Laser beam position slightly corrected for new ion beam position, see ID:84.
05:05 ? 1.0e7 223439 641 8166 601.9 - 601.7 0.005 5s 5 See picture (this + previous run)
05:21 ? 1.0e7 223439 642 8167 601.9 - 601.7 0.005 5s 5 Moved S1HA to -35 to get rid of the charge transferred beam.
05:33 ? 9.0e6 223439 644 8169 601.9 - 601.7 0.005 5s 5
05:52 ? 9.0e5 223439 645 8170 601.9 - 601.7 0.005 5s 5 Scraped main beam for lower beam intensities.
There were some issue with the acquisition, and thus there are some empty files
06:08 ? 4.e5 223438 650- 8172 601.9 - 601.7 0.005 3s 25
07:11 ? 1.15e7 223438 653 8173 601.9 - 601.7 0.005 3s 25 laser scan was not started
07:17 ? 1.03e7 223438 654-656 8174 601.9 - 601.7 0.005 3s 25
08:33 ? 6e6 223438 658-660 8176 601.9 - 601.7 0.005 3s 25 ESR scraper not in
09:27 ? 5.5e6 223438 661-667 8178 601.9 - 601.7 0.005 3s 25 XUV detector running again, signal of PMT north and middle in att. 2
10:15 ? <<1e6 223438 668 8179 601.9 - 601.7 0.005 3s 25 very low beam intensity


Note: PMT north does not see a resonance.

Note: PMT north does see a resonance after changing to the broadband PMT.
Entry  Mon May 30 02:33:45 2022, Patrick, MBS Max, DAQ, MBS procedure 
It is possible to keep go4 running now. Summary of the procedure:

DAC1: open file lxg1297:/data.local2/208Bi/208Bi -auto -rfio
DAC2: open file lxg0155:/data.local2/E128/Bi -auto -rfio
sta ac
start go4

measure

stop go4
sto ac
clo fi

repeat
Entry  Mon May 30 08:35:41 2022, Kristian, Simon, Ken, Ragan, Detectors, Changed PMT North  
We did not see any signal at PMT North which was the narrowband PMT. Changed it to the old solar blind PMT. Now we see the resonance. It is about 3 times larger as PMT middle, most likely because of the larger window. CFD threshold was set. I also increased the CFD threshold for PMT middle slightly.


HV for  PMT North: 1600 V
Entry  Mon May 30 09:28:43 2022, Ken, Kristian, Simon, Ragan, Detectors, XUV-Detector  
9:27 XUV-Detector is running again.

-5V cathode, 8A main coil, 2.4A sec.coil
Rate without beam was: 
Park position: ~300Hz 

Pump beneath the detector is now shut down, new rate: <10Hz.

Threshold was adjusted to trigger only on "nice" signals. 

Rate with beam in and laser:
Park position: ~400Hz
147mm: ~1.4kHz
 
with 2e6 ions
Entry  Mon May 30 16:17:39 2022, Kristian, David, Wilfried, Carsten, Danyal, Rodolfo, Runs, Afternoon shift 30.05 
These are the first runs after changing to the thick stripper foil.

Time ESR-intensity ESR-intensity after orbit change cooler-HV LMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm) step width increment (nm) dwell time(s) n loops comments
16:15 ? 5.0e6 223439 669-670 8180 601.95 - 601.734 0.005 5s 5 Resonance found in first scan. electron cooling current 100mA
16:45 ? 5.0e6 223439 671-672 8181 601.95 - 601.734 0.005 5s 5 electron cooling current 300mA


Width approximately the same with the higher electron current.
next we go to 208Bi
Entry  Mon May 30 19:00:19 2022, Carsten, General, Scraper Settings and Parameters for the last measrements with thick target screenshot-2022-05-30_19-12-151030168345517073342_(002).png
old Bunch frequency: 1.98777 MHz

Positions PL devices:
GE01DD2AG -23
GE01DD2IG 3
GE02DD2_G -35
GE02DS3HG 0


The voltages of the particle detectors were set to:
SA_SZ: 1500V
NA_SZ: 750V
But for the primatry beam measurements the detectors were still switched off

Set values for cooler:
SC3: 223513.377 + DeltaU = 160V
SC6: 223452.14 + DeltaU = 130V
SC9: 223452.14 + DeltaU = 130V

Electron current:
SC3: 300mA
SC6: 100mA (300mA in the second file)
SC9: 100ma (300mA in the second file)

Cooling in SC4: 550x
Cooling in SC7: 50x

Explanation of subchains:
SC4: Cooling at injection orbit
SC5: Ramp to central orbit
SC7: Cooling at central orbit
SC8: Scrapers /particle detectors in, XUV detector in, (~10s), bunching on
SC9: measurement
SC10: not used
SC11: Scrapers/particle detectors/XUV ectros out (~10s), bunching off
Entry  Mon May 30 19:42:20 2022, Rodolfo & Kristian, Laser, Changing laser wavelength 
We have changed the laser wavelength, e.g. the dye for the Cobra to Fluorescein 27.

We get about 84 mJ out the main amplifier @ 548 nm.

We also changed the optics and put into operation the MRC stabilization system for this new wavelength regime.

Next step is to T-scrape the ion- and laser-beams, e.g. to make the overlap of both beams at the E-Cooler.
Entry  Mon May 30 20:58:26 2022, Carsten, Accelerator, New Settings for 208Bi Beam  
Old SetParameters.C and old SetConditions.C were saved as SetParameters_209.C and SetConditions_209.C

The ion beam settings were changed to 208Bi82+:

SIS energy now: 554.6 MeV/u (was 551MeV/u) + 3.6MeV/u
Cooling voltages were increased by 1830V, i.e.
Delta U SC3: 1990V
DeltaU SC6 / SC9 : 1960V ???
The new frequency is 1.99236615 MHz

DD2AG xx
DD2IG xx
DD2_G xx
DS3_HG xx

SIS intensity is still only about 1e8
Entry  Mon May 30 21:52:08 2022, Wilfried, Danyal, David, Rodolfo, General, Position of T-Scrapers MRC_208Bi_30-05-2022-10Uhr.png
We have determined the position of the H-like 208Bi ion beam using the T-Scrapers. The position actually did not change in comparison to the position of H-like 209Bi.

Here we have the values where the beam was "gone"



devicemove in dir.gone (mm) x0 (mm)
GECEDS1VUup 0.7
GECEDS1HAright -22 -4.7
left -13.0
GECEDS2VUup 0.0
GECEDS2HAright -18.5 3.1
left -9.5



Below you can see a screenshot with the settings of the beam stabilization system.
Entry  Mon May 30 23:18:06 2022, Carsten, Rodolfo, Konstantin, Patrick, Ragan, Ken, Kristian, Max, Danyal, Runs, Runs shifts 31.05. 2022-05-31_particles.png
These are the first runs with 208Bi.

Time SIS-intensity ESR-intensity after orbit change cooler-HV LMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm) step width increment (nm) dwell time(s) n loops Particle Detector comments
23:11 2.6e8 - 225259 673-677 8182 548 - 549 0.005 2.97s 4 139e3 Resonance found in first scan.
00:09 ? - 225259 678-679 8183 548 - 549 0.005 2.97s 2 92e3
00:45 2.8e8 - 225260 680-681 8184 548 - 549 0.005 2.97s 2 36e3 In this run, the ions seemed to be not ejected with the new request, compare picture.
01:27 2.7e8 - 225260 684-685 8187 548 - 549 0.005 2.97s 2 88e3 Started delayed due to several issues with both DAQs.
01:53 2.7e8 - 225260 686-687 8188 548 - 549 0.005 2.97s 2 93e3
02:20 2.7e8 - 225260 688-689 8189 548 - 549 0.005 2.97s 2 87e3
02:55 2.1e8 - 225260 692-694 8190 548.335 - 548.535 0.0025 4.95s 4 88e3 Scan range changed
03:30 2.75e8 - 225260 696-697 8191 548.335 - 548.535 0.0025 4.95s 3 95e3 Number of loops reduced to 3
03:59 2.6e8 - 225260 698-699 8192 548.335 - 548.535 0.0025 4.95s 3 89e3
04:30 2.7e8 - 225260 700-702 8194 548.335 - 548.535 0.0025 4.95s 3 89e3 DAQ1 needed to be restarted
04:52 2.55e8 - 225260 703-704 8195 548.335 - 548.535 0.0025 4.95s 3 83e3
05:18 2.62e8 - 225260 706-707 8196 548.335 - 548.535 0.0025 4.95s 3 89e3 DAQ2 needed to be restarted
05:44 ? - 225260 708-710 8197 548.335 - 548.535 0.0025 4.95s 3 ?
06:18 2.1e8 - 225260 711-712 8200 548.36 - 548.51 0.0025 4.95s 3 67e3 we changed the timing by 20 ns. The laser pulse is later now. The file number of DAC1 is correct. I do not know why there is the gap to the previous scan
06:51 2.4e8 6e5 225260 713-714 8201 548.36 - 548.51 0.0025 4.95s 3 67e3 xuv-detector parameters were varied
07:09 2.4e8 6e5 - 715- 8202 548.36 - 548.51 0.0025 4.95s 3 68e3 mbs did not start
07:15 2.4e8 6e5 225260 716-717 8203 548.36 - 548.51 0.0025 4.95s 3 68e3 xuv-detector walklevel and treshhold were lowered
07:35 2.4e8 6e5 225259 718-719 8204 548.36 - 548.51 0.0025 4.95s 3 68e3 we changed the timing by additional 20 ns. The laser pulse is later now. - no fluo. visible
08:01 2.4e8 6e5 225259 720-721 no file opened 548.43 - 548.44 0.00001 ~20s 3 71e3 varying the delay with each laser step to find optimum - It was more a plateau between +-30ns (relative to the night shift's position). We now continue data taking at the same dealy as used by the night shift.
08:23 2.4e8 6e5 225258 722 8205 548.36 - 548.51 0.0025 4.95s 3 68e3 xuv-detector walklevel and treshhold were lowered
08:28 2.4e8 6e5 225258 724-725 8208 548.36 - 548.51 0.0025 4.95s 3 68e3
08:48 2.4e8 6e5 225258 727-728 8209 548.36 - 548.51 0.0025 4.95s 3 ? xuv-detector in Park-position just as a try
09:08 2.4e8 6e5 225259 729-730 8210 548.36 - 548.51 0.0025 4.95s 3 ?
09:28 2.5e8 6e5 225259 731-732 8211 548.36 - 548.51 0.0025 4.95s 3 73e3
09:54 2.5e8 6e5 225259 734-735 8212 548.36 - 548.51 0.0025 4.95s 3 175e3
10:19 2.5e8 6e5 225258 737-738 8214 548.36 - 548.51 0.0025 4.95s 3 175e3
10:38 2.5e8 6e5 225258 741-742 8215 548.36 - 548.51 0.0025 4.95s 3 64e3 DAQ2 started late. Missed the first 25 scan numbers Coasting beam measurement from now on
10:57 2.5e8 6e5 225258 743-744 8216 548.36 - 548.51 0.0025 4.95s 3 87e3
11:17 2.5e8 6e5 225258 745 8217 548.36 - 548.51 0.0025 4.95s 3 e3 MBS crashed
11:18 2.5e8 6e5 225257 746-747 8218 548.36 - 548.51 0.0025 4.95s 3 87e3
11:37 2.5e8 6e5 225257 749-750 8219 548.36 - 548.51 0.0025 4.95s 3 87e3 DAQ2 started late. Missed the first 10 scan numbers
11:56 2.5e8 6e5 225257 751 8220 548.36 - 548.51 0.0025 4.95s 3 78e3
12:59 2.5e8 6e5 225257 752 8221 548.385 - 548.485 0.0025 4.95s 3 78e3 RF off from now on, laser scan settings not correct. stopped
13:06 2.5e8 6e5 225257 753 8223 548.385 - 548.485 0.0025 4.95s 3 87e3
13:26 2.5e8 6e5 225257 754 8224 548.385 - 548.485 0.0025 4.95s 3 - MBS crashed
13:29 2.5e8 6e5 225257 755-756 8226 548.385 - 548.485 0.0025 4.95s 3 93e3 RF now really off (wrong cavity was turned off)
13:43 2.5e8 6e5 225257 757-758 8227 548.385 - 548.485 0.0025 4.95s 3 67e3
14:08 2.5e8 6e5 225257 759 8228 548.385 - 548.485 0.0025 4.95s 3 70e3
14:22 2.2e8 6e5 225257 760 8229 548.385 - 548.485 0.0025 4.95s 3 56e3
14:35 2.2e8 6e5 225257 761 8230 548.385 - 548.485 0.0025 4.95s 3 64e3
14:50 2.2e8 6.5e5 225256 762 8231 548.385 - 548.485 0.0025 4.95s 3 59e3
15:04 2.0e8 7e5 225255 763 8232 548.385 - 548.485 0.0025 4.95s 3 58e3
15:28 1.9e8 ?e5 225272 764 8233 548.385 - 548.485 0.0025 4.95s 2 66e3 changed to 200mA cooler current, NTCAP stopped and started again folder: prob. ~31.5.22 13:??, loops decreased to 2
15:37 2e8 6e5 225272 765 8234 548.385 - 548.485 0.0025 4.95s 2 70e3
15:47 2.5e8 6e5 225272 766 8235 548.385 - 548.485 0.0025 4.95s 2 73e3 laser gone at loop 2 scan 35 (15:56), Ecooler went also off
16:17 ?e8 6e5 225272 767 8236 548.385 - 548.485 0.0025 4.95s 2 48e3 bad shot?, probably ecooler reset
16:27 2.2e8 6e5 225271 768 8237 548.385 - 548.485 0.0025 4.95s 2 77e3
16:36 2.0e8 7e5 225272 769 8238 548.385 - 548.485 0.0025 4.95s 2 65e3
16:52 ?e8 ?e5 225272 770 8239 548.385 - 548.485 0.0025 4.95s 2 61e3 we had to restart go4, it was very slow
17:02 2.0e8 7e5 225272 771 8240 548.385 - 548.485 0.0025 4.95s 2 63e3
17:16 2.3e8 7e5 225248 772-773 8241 548.385 - 548.485 0.0025 4.95s 4 45e3 changed to 50mA cooler current, NTCAP stopped and started again folder: 31.5.22 15:18, loops increased to 4
17:36 2.7e8 7.5e5 225248 774-775 8242 548.385 - 548.485 0.0025 4.95s 6 67e3 loops increased to 6
18:05 2.5e8 7.5e5 225248 776-777 8243 548.385 - 548.485 0.0025 4.95s 6 66e3
18:31 1.7e8 6e5 225247 778-779 8244 548.385 - 548.485 0.0025 4.95s 6 44.6e3 SIS pattern looked strange
Entry  Tue May 31 03:18:52 2022, Patrick, Konstantin, Laser, Laser timing  
The final timings are (in bins +-1):

PD NO: 103
PD SO: 138
PMT middle: 44
e-cooler = (PD NO + PD SO) / 2: 121
e-cooler - PMT middle: 77
roundtrip / 2: 75
roundtrip / 2 + 10ns: 78
Entry  Tue May 31 15:19:58 2022, Max, Carsten, Danyal, General, scans for different E-cool currents  
until 15:15 we have measured with I_e = 100 mA (3 loops per file) 
E_cool HV = 225255 V 


after that (at 15:26) we changed to I_e = 200 mA (2 loops per file) 
E_cool HV = 225272 V 

after that (at 17:15) we changed to I_e = 50 mA (first 4 then 6 loops per file) 
E_cool HV = 225247 V
Entry  Tue May 31 17:22:09 2022, Max, Carsten, Danyal, Rodolfo, Wilfried, General, change E-cooler current I_e = 50 mA  
At 17:15 we changed again the E-cooler current I_e = 50 mA  
(4 laser scan loops per injection) 
E-cool HV = 225248 V
Entry  Tue May 31 19:32:56 2022, Carsten, Wilfried, Max, Calibration, electron cooler calibration voltage - frequency 
SetVoltage (DeltaU) MeasVoltage freq Current
+1950V 225247V 245.06725 50 mA
+1950V 225255.4V 245.0595 100 mA
+1960V 225266.4V 245.062125 100 mA
+1970V 225276.8V 245.064185 100 mA
+1980V 225286.6V 245.066 100 mA
+1990V 225296.1V 245.06775 100 mA
+2000V 225305.1V 245.0695 100 mA
+1950V 225255.5V 245.06 100 mA
+1940V 225246.0V 245.058125 100 mA
+1930V 225236.0V 245.05625 100 mA
+1920V 225226.0V 245.0545 100 mA
+1910V 225216.7V 245.052625 100 mA
+1900V 225205.8V 245.050375 100 mA
+1850V 225156.5V 245.041 100 mA
+1800V 225106.6V 245.031375 100 mA
+1950V 225256.1V 245.060125 100 mA
+2000V 225306.0V 245.06975 100 mA
+2050V 225355.8V 245.079375 100 mA
+2100V 225406.0V 245.0890 100 mA
+1950V 225256.2V 245.060125 100 mA
Change electron current and note down High Vltage and revolution frequency
NTCAP was restarted at the beginning and stopped at the end of the measuring period.
The NTCAP folder is 05-31_17-16-49 (system time 19:11)
Entry  Tue May 31 19:37:30 2022, Carsten, Max, Wilfried, Detectors, SASZ and NASZ voltages switched off  
SASZ and NASZ voltages were switched off bevor we went back to 209Bi. Laser beam stabilization turned off.
Entry  Tue May 31 19:59:49 2022, Carsten, Danyal, Accelerator, change in frequency mismatch 208Bi --> 209Bi  
time = 20:00 

The RF has been adjusted so that it bunches at the correct frequency for 209Bi 

For 208Bi the settings ("frequency mismatch") were: 
-0.102 in SC5 
-0,102 in SC11  


For 209Bi the settings ("frequency mismatch") are (and were yesterday): 
-0.83 in SC5 
-0,83 in SC11
Entry  Tue May 31 21:08:04 2022, Carsten, Max, Detectors, XUV detector automation off  
We deactivated the automation of the XUV detector. It stays out now.
Entry  Tue May 31 21:58:55 2022, Max, Rodolfo, Laser, MRC Settings for 209Bi  MRC_209Bi_31-05-2022_2157.png
We have change the laser settings for the spectroscopy of 209Bi.

We have now T-scraped the laser beam to the old position of the ion beam. The settings for the MRC system are shown in the screenshot below.
Entry  Wed Jun 1 00:03:08 2022, Konstantin, Simon, Kristian, Runs, 209-Bi runs 
Time SIS-intensity ESR-intensity after orbit change cooler-HV cooler current (mA) LMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm) step width increment (nm) dwell time(s) n loops comments
23:40 - - 223432 100 781 8246 601.735 - 601.95 0.005 4.95s 2 resonance found but problems with go4
00:02 - 5.5e6 223432 100 783 8248 601.735 - 601.95 0.005 4.95s 2 resonance not in the middle of the scan range
00:14 - 4.5e6 223432 100 784 8249 601.7 - 601.9 0.005 4.95s 2 change the scan range
00:14 - 1.1e7 223432 100 785 8250 601.7 - 601.9 0.005 4.95s 2
00:35 - 9e6 223432 100 786-787 8251 601.7 - 601.9 0.005 4.95s 4
00:50 - 6.5e6 223432 100 788-789 8252 601.7 - 601.9 0.005 4.95s 4
01:07 2.2e8 1.15e7 223432 100 790-791 8253 601.7 - 601.9 0.005 4.95s 4
01:26 2.3e8 1.15e7 223448 200 792 8254 601.7 - 601.9 0.005 4.95s 2 switched to coasting beam, changed ESR current
01:37 2.2e8 1.15e7 223448 200 793 8255 601.7 - 601.9 0.005 4.95s 2
01:48 2.2e8 1.15e7 223448 200 794 8256 601.7 - 601.9 0.005 4.95s 2
01:58 2.2e8 1.15e7 223448 200 795 8257 601.7 - 601.9 0.005 4.95s 2
02:08 2.2e8 1.15e7 223448 200 796 8258 601.7 - 601.9 0.005 4.95s 2
02:19 2.15e8 1.15e7 223432 100 797-799 8259 601.7 - 601.9 0.005 4.95s 6 changed ESR current again
02:45 2.17e8 1.15e7 223432 100 800-802 8260 601.7 - 601.9 0.005 4.95s 6
03:12 2.12e8 1.15e7 223423 50 803-805 8261 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-05-31_19-33-57
03:38 2.2e8 1.15e7 223423 50 806-808 8262 601.7 - 601.9 0.005 4.95s 6
04:05 2.13e8 1.15e7 223427 75 809-811 8263 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-06-01_03-12-03
04:30 2.03e8 1.15e7 223427 75 812-814 8264 601.7 - 601.9 0.005 4.95s 6
04:57 2.08e8 1.15e7 223440 150 815-817 8265 601.7 - 601.9 0.005 4.95s 6 changed cooler current again, restarted NTCAP folder 2022-06-01_04-04-32
05:21 2.1e8 1.15e7 223440 150 818-820 8266 601.7 - 601.9 0.005 4.95s 6
05:57 2.08e8 1.15e7 223440 150 821-823 8267 601.7 - 601.9 0.005 4.95s 6 laser power reduced from 46.2mJ to 25mJ
06:25 1.5e8 9e6 223440 150 824-826 8268 601.7 - 601.9 0.005 4.95s 6
06:56 2.1e8 1.15e7 223440 150 827-829 8269 601.7 - 601.9 0.005 4.95s 6 Laser power reset to 48mJ. Last ion injection!!!
07:18 - 4.7e6 223439 150 830-832 8270 601.7 - 601.9 0.005 4.95s 6 Last ion injection!!!
7:40 - 2.0e6 223439 150 833-834 8271 601.7 - 601.9 0.005 4.95s 6 old beam
8:02 - 1.0e6 223439 150 835-836 8272 601.7 - 601.9 0.005 4.95s 6 older beam
8:25 - 5e5 223439 150 837-8 8273 601.7 - 601.9 0.005 4.95s 6 very old beam
8:48 - 3e5 223439 150 839-840 8274 601.7 - 601.9 0.005 4.95s 6 very very old beam
9:10 - 2e5 223439 150 841-842 8275 601.7 - 601.9 0.005 4.95s 6 beam close to retirement - no signal anymore


9:33 beam retired. Turned laser off. Stopped NTcap

post beamtime change: replaced "ESR current" by "cooler current" in the comments column. (Wilfried)
Entry  Wed Jun 1 00:16:02 2022, Konstantin, Simon, DAQ, Timing 209Bi thick target Timing_209Bi_final.png 
Timing for the final measurements on 209Bi was determined for the new frequency 1.93777MHz. Peak positions are

PD NO 106
PD SO 141.5
PMT MIDDLE 45 (due to the broad temporal structure difficult to determine)

Center between PDs is 123.75. Difference to PMT MIDDLE is 78.75. This is ~3 bins larger than the half period of 75.
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