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  proton-capture on 118Te, Page 7 of 29  Not logged in ELOG logo
ID Date Author Category Subject Year
  458   Wed May 26 03:32:17 2021 Michele, CobusRunsRun 01242021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0124.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 03:31:51 26.05.2021
run stop: 04:20:11 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 2 Hz
Xray_ON_bdt: 240 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 1.5e6 (more or less)
Target ON density: 1.0e14

Comment: No beam in SIS from 04:05:30
  457   Wed May 26 02:30:58 2021 Michele, CobusRunsRun 01232021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0123.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 02:30:36 26.05.2021
run stop: 03:31:42 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 4 Hz
Xray_ON_bdt: 250 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 2.0e6 (more or less)
Target ON density: 1.0e14
  456   Wed May 26 01:29:00 2021 Michele, CobusRunsRun 01222021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0122.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 01:28:13 26.05.2021
run stop: 02:30:27 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: 2 ~ Hz
Xray_ON_bdt: 230 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 1.8e6 (more or less)
Target ON density: 1.0e14
  455   Wed May 26 00:29:07 2021 Michele, CobusRunsRun 01212021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0121.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 00:26:39 26.05.2021
run stop: 01:28:04 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~4 Hz
Xray_ON_bdt: 230 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 2.1e6 (more or less)
Target ON density: 1.0e14
  454   Tue May 25 23:27:30 2021 Beatriz, CobusRunsRun 01202021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0120.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 23:26:41 25.05.2021
run stop: 00:26:29 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~3 Hz
Xray_ON_bdt: 250 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 3.0e9 (one shoot)
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 2e6 (more or less)
Target ON density: 1.0e14
  453   Tue May 25 22:14:52 2021 Robert, ShahabRunsRun 01192021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0119.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 22:17:33 25.05.2021
run stop: 23:26:33 25.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: 2 Hz
Xray_ON_bdt: 170 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 370 nA


SIS particles before: 3.0e9 (one shoot)
ESR current at injection: 6.8e6 (stacked)
ESR particles after decel.: 2e6 (more or less)
Target ON density: 1.1e14
  452   Tue May 25 22:03:22 2021 Robert/ShahabRunsLifetime measurement2021
Run 0118

Gas jet target has been turned off for lifetime measurement.

Two cycles, each 6 min long
  451   Tue May 25 20:46:29 2021 Robert, ShahabRunsRun 01182021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0118.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 12:35:28 25.05.2021
run stop: 13:49:00 25.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: 3 Hz
Xray_ON_bdt: 270 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 370 nA


SIS particles before: 3.0e9 (one shoot)
ESR current at injection: 6.8e6 (stacked)
ESR particles after decel.: 2e6 (more or less)
Target ON density: 1.1e14
  450   Tue May 25 18:46:04 2021 Robert/ShahabAcceleratorQuadrupoles down2021
All quadrupoles went off, waiting for the on-call service
  449   Tue May 25 17:12:59 2021 Robert/ShahabAcceleratorBeam2021
Beam is back; It is now being optimized
  448   Tue May 25 15:56:48 2021 Robert/ShahabAcceleratorTrafo2021
Trafo was set to 0
  447   Tue May 25 13:49:51 2021 Oliver, Diego, JanGeneralNo Beam2021
No beam from 13:49:00 until 
  446   Tue May 25 12:36:10 2021 Oliver, DiegoRunsRun 01172021
No. of stacks: 30 (before 20)
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0117.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 12:35:28 25.05.2021
run stop: 13:49:00 25.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~0 Hz
Xray_ON_bdt: 140 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 390 uA


SIS particles before: 3.0e9
ESR current at injection: 6.8e6 (stacked)
ESR particles after decel.: 1.75e6 (more or less)
Target ON density: 1.1e14
  445   Tue May 25 11:58:30 2021 JanAnalysis118(p,g) counts until run01152021
The two attached plots show the collected Si data up to run0115.

Within this ~15h we have about ~70 counts in the peak region.

This translates to ~4.5 counts per hour.
And shall be compared to the 1 count/hour we had last year.
Attachment 1: run91to115_Si_map.png
run91to115_Si_map.png
Attachment 2: run91to115_Si_projection.png
run91to115_Si_projection.png
  444   Tue May 25 11:36:00 2021 Oliver, DiegoRunsRun 0116 - after ESR optimization2021
No. of stacks: 30 (before 20)
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0116.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 11:35:25 25.05.2021
run stop: 12:35:27 25.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~0 Hz
Xray_ON_bdt: 160 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 390 uA


SIS particles before: 2.6e9
ESR current at injection: 6.5e6 (stacked)
ESR particles after decel.: 1.75e6 (more or less)
Target ON density: 1.1e14
  443   Tue May 25 10:22:23 2021 Oliver, DiegoRunsRun 0115 - after ESR optimization2021
DAQ node2 was on pause!

No. of stacks: 30 (before 20)
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0115.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 10:21:12 25.05.2021
run stop: 10:33:42 25.05.2021 stopped again for ESR opt.
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~0 Hz
Xray_ON_bdt: 140 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 400 uA


SIS particles before: 2.2e9
ESR current at injection: 5.7e6 (stacked)
ESR particles after decel.: 1.5e6 (more or less)
Target ON density: 1.0e14
  442   Tue May 25 09:53:04 2021 Oliver, DiegoRuns(No)Run 01142021
Run0114 was started after ESR optimization but immedieatly again stopped...

at 09:52:34 on 25.05.2021
  441   Tue May 25 09:11:13 2021 Oliver, DiegoRunsRun 0113 - stopped for ESR optimizations2021
DAQ node2 was on pause!

No. of stacks: 30 (before 20)
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0113.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 09:10:39 25.05.2021
run stop: 09:39:45 25.05.2021 stopped for ESR optimization
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~0 Hz
Xray_ON_bdt: 140 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 390 uA


SIS particles before: 3.3e9
ESR current at injection: 6.0e6 (stacked)
ESR particles after decel.: 1.5e6 (more or less)
Target ON density: 1.0e14
  440   Tue May 25 08:51:50 2021 Oliver, DiegoRunsRun 0112 - stopped for filling detectors2021
No. of stacks: 30 (before 20)
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0112.lmd

beam: 118Te52+
energy: 7 MeV/u
cooler voltage:

purpose:
Fragment beam measurement (beating the record of rad. beam pg-measurement)

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +3.5 mm (20mm away from beam)

run start: 08:51:18 25.05.2021
run stop: 09:00:40 25.05.2021 stopped for filling detectors
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~0 Hz
Xray_ON_bdt: 140 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 390 uA


SIS particles before: 3.5e9
ESR current at injection: 6.3e6 (stacked)
ESR particles after decel.: 1.5e6 (more or less)
Target ON density: 1.0e14
  439   Tue May 25 08:36:15 2021 JanGenerallessons learned2021
1. before using stoch. cooling in ESR, boot and update the windows PC
2. better diagnostics for low energy/intensity beam-target overlapp in ESR is needed (either a clever analysis or a new detector)
more to come
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