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  masses & isomeres 2025, Page 16 of 17  Not logged in ELOG logo
ID Date Author Category Subject
  30   Tue Apr 1 06:31:46 2025 MichaelGeneralLassie Monitor 2025-04-01_06-31-10-211_tcl1064.png
  29   Tue Apr 1 05:58:51 2025 MichaelGeneralLassie Monitor 2025-04-01_05-58-09-122_tcl1064.png
  28   Tue Apr 1 05:29:45 2025 MichaelGeneralLassie Monitor 2025-04-01_05-29-01-845_tcl1064.png
  27   Tue Apr 1 04:59:14 2025 MichaelGeneralLassie Monitor 2025-04-01_04-58-31-351_tcl1064.png
  26   Tue Apr 1 04:27:10 2025 MichaelGeneralLassie Monitor 2025-04-01_04-25-53-171_tcl1064.png
  25   Tue Apr 1 03:55:59 2025 MichaelGeneralLassie Monitor 2025-04-01_03-55-21-183_tcl1064.png
  24   Tue Apr 1 03:52:56 2025 Shahab, Michael, Yue, Zac, CarloDAQgood files
all settings are done.
any files coming after this one is good:

RSA01-2025.04.01.03.52.59.247.tiq
  23   Tue Apr 1 03:50:12 2025 Shahab, Yue, Carlo, Zac, Esther, MichaelDAQTuners of the both cavities set
410 MHz cavity resonance frequency tuned. motors both on 50 mm
245 MHz cavity resonance frequency tuned. motors both on 390 mm
  22   Tue Apr 1 03:27:44 2025 MichaelGeneralLassie Monitor 2025-04-01_03-22-05-395_tcl1064.png
  21   Tue Apr 1 02:55:06 2025 Shahab, Michael, Yue, Zac, CarloDAQnew RSA recording
anything from RSA01-2025.04.01.02.54.25.976.tiq onwards is good data

recording parameters:

5 MHz with 6.25 MSPS, 2.5 seconds, analyzer span 100 khz, trigger at 5%

All analyzer times are now set to summer time
file time stamps are correct

settings are in the attached pictures.
  20   Tue Apr 1 02:37:28 2025 H. Weick, S. LitvinovAcceleratorIsoc-setting +scrapers
First a setting with orbit bump for injection on central orbit was tried.
- quadrupoles tuned and scrapers optimized

Then back to an ESR setting without this bump like last year.
- again quadrupoles tuned and scrapers optimized
This gave a good resolution in which the isomer should be resolved.

Just after this was achieved all resolution was lost.
Making the input for ESR setting again recovered it, now with slightly different scrapers.

Quads: K'L Q3D / Q6D = -0.3603263
Sext: K''L GE01KS2 = -0.14
           GE01KS3 =  0.05

scrapers: GEEXDS1HA =  -5 mm
          GE01DS3HG = -70 mm 

Details see paper scans below.
  19   Tue Apr 1 02:20:36 2025 ruijiuAnalysischange back the frequency of 194Pb82
frequency of 194Pb82+ at 211 408606000
frequency of 194Pb82+ at 126 244001000
  18   Tue Apr 1 02:03:33 2025 ruijiuAnalysisThe frequency of 194Pb82+ has been changed from 408.522 MHz to 408.637 MHz
this is the new setting after we lost the old one.


datafile = "/data.local/G22-00018_00203/results/analyzers/RSA01/RSA01-2025.04.01.00.55.55.572.tiq_spectrum.npz"
filep = "/data.local/G22-00018_00203/scripts/OnlineDataAnalysisSystem/rionid_exercises/exercise_194Pb_Exp_2025/New_TEline2022-ESR-194Pb-208Pb-nostripper_524MeV.lpp"
alphap = "1.399"
harmonics = "211"
refion = "194Pb+82"
circumference = "108.34"
mode = "Frequency"
value = "408637000"
reload_data = true
nions = "100"
  17   Tue Apr 1 02:01:06 2025 Zac, Shahab, Ruijiu, Yuri, Sergey, Wolfram, Carlo, MichaelAcceleratorSettings lost
Settings lost after the beam was lost. Trying to recover particle identification now that beam has returned.
  16   Mon Mar 31 23:34:58 2025 ruijiu, shahab, yuri, wolfram, sergeyAnalysisidentificaton of 194Pb82+
datafile = "/data.local/G22-00018_00203/results/analyzers/RSA01/RSA01-2025.03.31.22.18.16.965.tiq_spectrum.npz"
filep = "/data.local/G22-00018_00203/scripts/OnlineDataAnalysisSystem/rionid_exercises/exercise_194Pb_Exp_2025/New_TEline2022-ESR-194Pb-208Pb-nostripper_524MeV.lpp"
alphap = "1.4"
harmonics = "212"
refion = "194Pb+82"
circumference = "108.34"
mode = "Bρ"
value = "7.196596"
reload_data = true
nions = "100"
  15   Mon Mar 31 22:35:36 2025 ruijiu ChenAnalysisIdentification of 194Pb82
  14   Mon Mar 31 22:13:04 2025 Shahab, Yue, Carlo, Zac, EstherRunsPID continued
continuing PID with better / higher resolution:

RSA01-2025.03.31.21.10.54.758.tiq_spectrum.npz
...
RSA01-2025.03.31.21.12.29.106.tiq_spectrum.npz

trying to do PID....
  13   Mon Mar 31 22:03:56 2025 Shahab, Yue, Carlo, Zac, EstherRunsPID
trying to do PID with some injections:

RSAs are still on winter time. they show summer time but files have winter time.

data used for PID is range from:

RSA01-2025.03.31.20.21.13.217.tiq_spectrum.npz
...
RSA01-2025.03.31.20.53.06.492.tiq_spectrum.npz

gamma_t = 1.4

but files are not so good.
  12   Mon Mar 31 20:53:02 2025 Shahab, Carlo, Zac, Esther, MichaelDAQDAQ start
20:28 started NTCAP
started queqiao file transfer for RSAs only
started analyzer looper for RSAs

 
  11   Mon Mar 31 20:42:38 2025 H. Weick, S. LitvinovAcceleratorfragment setting, E-SIS
~ 20:00 changed E-SIS to 524.0 MeV/u to get 194Pb at the Brho of the primary beam before (=7.2008 Tm).
which corresponds to gamma = 1.400 for 194Pb82+. 
Before it was E-SIS = 480.5 MeV/u after Be-1839 mg/m^2 target Brho = 7.2014 Tm.
Keep target and beamlines and ESR the same, only SIS and TE-line before target is changed.
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