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  nuclear two-photon decay 2024, Page 1 of 6  Not logged in ELOG logo
Entry  Tue May 14 15:07:23 2024, Ruijiu, David, Shahab, Xinliang, Zhangmin, Runs, Cooler curve measurement 7x


Cooler curve measurement
Entry  Tue May 14 19:07:27 2024, Shahab, Runs, Broadband measurement / High Sampling rate 
Stable beam after a long time:

Entry  Tue May 14 21:41:11 2024, Shahab, Runs, Test Screenshot 2024-05-14_21-39-01-112_tcl1048.png
 
Entry  Wed May 15 00:26:53 2024, David, Asahi, Shahab, Chris, Ruijiu, Runs, First data file - 00:26 
Centered resonant frequency on 98Mo+42 at the 126 harmonic (243.925 MHz) and 211 harmonic (408.483 MHz).
Recording for 2 seconds (injection start at 10%), injection every 6 seconds. 
Entry  Wed May 15 12:58:12 2024, Beatriz, Min, Shahab, Runs, optimizing the mass resolution 
Yuri and Sergey still optimizing the mass resolution.

From 13:10 to ~ 13:35 SIS energy was increased to 457.4 (~3 MeV/u) to test whether this moves the best isochronicity to 98Mo (we were off before), -> Brho(98Mo)=7.12736
Entry  Wed May 15 17:22:43 2024, Jeroen, Shahab, Johan, Runs, 98Mo run 
Beam tuned at 4:50, data acquisition aligned for 98Mo at 4:56.
Entry  Wed May 15 18:37:36 2024, Jeroen, Johan, Shahab, Runs, Beam returned to ESR 2024-05-15_18-37-57-073_tcl1064.png
Beam returned at 18:30:55. Taking data with new triggers.
Entry  Wed May 15 20:40:51 2024, Jeroen, Johan, Runs, Beam returned to ESR 2024-05-15_20-40-22-391_tcl1064.png2024-05-15_22-01-28-310_tcl1064.png
20:39:42 Runs restarted.
Entry  Thu May 16 00:37:41 2024, Boguslaw, Camille, Runs, Injection pattern changed 2024-05-16_00-34-07-585_tcl1064.png2024-05-16_01-53-34-896_tcl1064.png2024-05-16_03-10-00-258_tcl1064.png
The injection pattern changed on Lassie monitor (0:27 AM). (picture 1)

It when back to the previous rate at 1:48 AM. (picture 2)
Entry  Thu May 16 04:37:27 2024, Boguslaw, Camille, Runs, No beam to ESR 2024-05-16_04-38-44-446_tcl1064.png
We had no beam in ESR for about 3 minutes
Entry  Thu May 16 07:25:33 2024, Mayr, Hannes, Runs, Lassie Screenshot 07:23 2024-05-16_07-23-30-208_tcl1064.png
Start of regular screenshots of the Lassie monitor every 1-2 hours.
Entry  Thu May 16 07:50:39 2024, Mayr, Hannes, Runs, Peaks with very high particle rate 2024-05-16_07-49-53-757_tcl1064.png
Peaks in the particle diagram going to unusual high 1.4e9 particles.
Entry  Thu May 16 08:58:39 2024, Mayr, Hannes, Runs, Fluctuations in particle rate 2024-05-16_08-58-00-964_tcl1064.png
Particle rates are fluctuating and increasing from a constant 5e8 to something around 1e9.
Entry  Thu May 16 09:41:56 2024, Mayr, Hannes, Runs, No beam 
No beam from 09:39 to 10:10 due to a setting change. The change aims to increase the measurement time to 10s.
Entry  Thu May 16 10:18:14 2024, Mayr, Hannes, Runs, Beam back, DAQ off 
Beam is back since 10:10, but DAQ is turned off to change the setting there.
Measurements starting at 10:18 are only test runs and should not be used for analysis.
Entry  Thu May 16 11:08:27 2024, Mayr, Hannes, Runs, DAQ running again 
"Real" measurement with good data starting from 11:07 until approximately 13:00.
Measurement time was changed to 10s with injections every 32s.
Entry  Thu May 16 11:13:05 2024, Mayr, Hannes, Runs, Rates 2024-05-16_11-10-57-933_tcl1064.png
With the new timing, the rates now look like can be seen in the screenshot.
Entry  Thu May 16 13:04:02 2024, Mayr, Hannes, Runs, DAQ stopped, change setting to 98Zr 
Beam tuning for 98Zr starting at 12:53, following data should be excluded from analysis. DAQ was stopped around 13:13.
Entry  Thu May 16 16:10:03 2024, Ide, Hubbard, Runs, Lassie Screenshot 2024-05-16_16-08-02-778_tcl1064.png.pdf
Lassie Screenshot taken at 16:09
Entry  Thu May 16 16:38:11 2024, Ide, Hubbard, Runs, No beam to ESR 
because of problems in HHT
no beam from 16:36
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