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  proton-capture on 118Te, Page 6 of 29  Not logged in ELOG logo
ID Date Author Category Subject Year
  479   Wed May 26 20:42:31 2021 Ragan, ThanassisRunsRun 01382021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm
bump target (sc10): -11.5 mm


open file : e127b_run0138.lmd

beam: 118Te52+
energy: 6 MeV/u
cooler voltage:

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

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +1.0 mm

run start: 20:42:13 26.05.2021
run stop: 21:42:20 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 5 Hz
Xray_ON_bdt: 100 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 7.0e8 (one shoot)
ESR current at injection: 5.0e6 (stacked)
ESR particles after decel.: 2.3e5 (more or less)
Target ON density: 1.0e14
  478   Wed May 26 20:34:50 2021 Ragan, ThanassisDetectorsDetector filling2021
Jan is filling the detector after run0137.
  477   Wed May 26 20:26:15 2021 Ragan, ThanassisRunsRun 01372021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm
bump target (sc10): -11.5 mm


open file : e127b_run0137.lmd

beam: 118Te52+
energy: 6 MeV/u
cooler voltage:

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

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +1.0 mm (20mm away from beam)

run start: 20:25:44 26.05.2021
run stop: 20:33:11 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 6 Hz
Xray_ON_bdt: 100 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 7.0e8 (one shoot)
ESR current at injection: 5.0e6 (stacked)
ESR particles after decel.: 2.3e5 (more or less)
Target ON density: 1.0e14
  476   Wed May 26 19:25:54 2021 Ragan, ThanassisRunsRun 01362021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm
bump target (sc10): -11.5 mm

open file : e127b_run0136.lmd

beam: 118Te52+
energy: 6 MeV/u
cooler voltage:

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

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +1.0 mm (20mm away from beam)

run start: 19:25:38 26.05.2021
run stop: 20:25:40 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 6 Hz
Xray_ON_bdt: 80 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.1e9 (one shoot)
ESR current at injection: 5.4e6 (stacked)
ESR particles after decel.: 0.9e6 (more or less)
Target ON density: 1.0e14
  475   Wed May 26 19:08:17 2021 Ragan, ThanassisGeneralCooler down2021
We stopped data taking as the electron cooler is down.
  474   Wed May 26 18:37:34 2021 Ragan, ThanassisGeneralOptimization target bump/overlapp2021
| bump position | X ray bdt ON | Si rate ON |
---------------------------------------------
| -11.5         | 120          | 4-5        |
| -10.5         | 100          | 5          |
| -9.5          | 85           | 5          |
| -12.5         | 100          | 6          |

-11.5 bump position is taken for the data taking.
  473   Wed May 26 18:36:08 2021 Ragan, ThanassisRunsRun 01352021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm
bump target (sc10): -11.5 mm


open file : e127b_run0135.lmd

beam: 118Te52+
energy: 6 MeV/u
cooler voltage:

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

Detector position (Si): -25 mm
GE01DD1IG position (Scraper): +1.0 mm (20mm away from beam)

run start: 18:18:10 26.05.2021
run stop: 19:07:37 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 6 Hz
Xray_ON_bdt: 80 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.1e9 (one shoot)
ESR current at injection: 5.4e6 (stacked)
ESR particles after decel.: 0.9e6 (more or less)
Target ON density: 1.0e14
  471   Wed May 26 15:30:03 2021 Ragan, ThanassisGeneralChanging the beam energy 2021
The ESR team is changing the beam energy to 6 MeV/u.
  470   Wed May 26 14:48:10 2021 Ragan, ThanassisRunsRun 01342021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm
bump target (sc10): -11.5 mm

open file : e127b_run0134.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: 14:47:22 26.05.2021
run stop: 15:28:45 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 8 Hz
Xray_ON_bdt: 210 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.1e9 (one shoot)
ESR current at injection: 5.4e6 (stacked)
ESR particles after decel.: 0.9e6 (more or less)
Target ON density: 1.0e14
  469   Wed May 26 14:28:23 2021 JanAnalysisXrays from 118Te & 124Xe2021
Attached is a plot of the uncalibrated energy spectra taken with the 90 degree xray detector for 118Te (red) and 124Xe (blue).
Shown is the region covering the K-alpha and K-REC peaks.

Calculating the ratios (Te/Xe) for K_alpha and K-REC energies from theory one gets:

K_alpha (theory): 0.9236  
K-REC   (theory): 0.9308

Without energy calibration we get the following ratio (using channel numbers):

K_alpha (exp): 0.9293  
K-REC   (exp): 0.9344

Taking into account that the channel numbers are not calibrated, the agreement is still very good.

In summary we can be sure that we have 118Te stored at 7AMeV.
Attachment 1: xray90_124Xe_118Te.png
xray90_124Xe_118Te.png
  468   Wed May 26 13:49:36 2021 Rene, TinoRunsRun 01332021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0133.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: 13:47:44 26.05.2021
run stop: 14:47:12 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 8 Hz
Xray_ON_bdt: 210 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.1e9 (one shoot)
ESR current at injection: 5.4e6 (stacked)
ESR particles after decel.: 0.9e6 (more or less)
Target ON density: 1.0e14
  467   Wed May 26 12:49:52 2021 Rene, TinoRunsRun 01322021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0132.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: 12:49:29 26.05.2021
run stop: 13:47:44 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 7 Hz
Xray_ON_bdt: 280 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.1e8 (one shoot)
ESR current at injection: 6.3e6 (stacked)
ESR particles after decel.: 1.2e6 (more or less)
Target ON density: 1.0e14

Sensitivity of SIS trafo has been changed, thats why the the SIS particle number is smaller, but intensity did not change.
Parallel injection into cave c has started. This brought problems with the timing for the stochastic cooling.
  466   Wed May 26 11:47:48 2021 Rene, TinoRunsRun 01312021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0131.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: 11:47:03 26.05.2021
run stop: 12:49:17 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 7 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: 6.3e6 (stacked)
ESR particles after decel.: 1.2e6 (more or less)
Target ON density: 1.0e14
  465   Wed May 26 10:34:18 2021 Rene, TinoRunsRun 01302021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0130.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: 10:33:13 26.05.2021
run stop: 11:41:38 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 7 Hz
Xray_ON_bdt: 240 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 1.9e9 (one shoot)
ESR current at injection: 4.2e6 (stacked)
ESR particles after decel.: 1.4e6 (more or less)
Target ON density: 1.0e14

electron cooler stopped working at the end of run. hence no target-on rate
  464   Wed May 26 09:28:12 2021 Rene, TinoRunsRun 01292021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0129.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: 9:27:53 26.05.2021
run stop: 10:33:07 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 6 Hz
Xray_ON_bdt: 270 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 1.9e9 (one shoot)
ESR current at injection: 4.2e6 (stacked)
ESR particles after decel.: 1.4e6 (more or less)
Target ON density: 1.0e14

First run with new filament, current still a little low
  463   Wed May 26 07:20:14 2021 Rene, TinoRunsRun 01282021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0128.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: 07:19:12 26.05.2021
run stop: 08:30:54 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 7 Hz
Xray_ON_bdt: 240 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 3.1e9 (one shoot)
ESR current at injection: 6.4e6 (stacked)
ESR particles after decel.: 0.9e6 (more or less)
Target ON density: 1.0e14

This run was a little longer, since we run until the filament needs to be changed
  462   Wed May 26 07:08:07 2021 LaszloCalibrationquick and dirty calibration coefficients for the Si channels2021
The coefficients are produced only quick and dirty, S_x=1 was fixed to 1.
E = E_x = E_y = S_x*A_x = S_y*A_y

from 1-16: Si X channel
from 17-32: Si Y channel

S_param[1]=1;
S_param[2]=1.00953;
S_param[3]=1.00697;
S_param[4]=1.00506;
S_param[5]=0.985741;
S_param[6]=1.00338;
S_param[7]=0.998362;
S_param[8]=1.00424;
S_param[9]=0.998684;
S_param[10]=1.00029;
S_param[11]=1.01181;
S_param[12]=1.007;
S_param[13]=1.00927;
S_param[14]=1.00828;
S_param[15]=1.01399;
S_param[16]=0.995168;
S_param[17]=1.00612;
S_param[18]=1.01383;
S_param[19]=0.99964;
S_param[20]=1.03;
S_param[21]=1.00987;
S_param[22]=1.01913;
S_param[23]=0.993491;
S_param[24]=1.02393;
S_param[25]=1.00342;
S_param[26]=0.990515;
S_param[27]=0.986303;
S_param[28]=0.986874;
S_param[29]=1.00188;
S_param[30]=1.01761;
S_param[31]=0.995329;
S_param[32]=0.995247;
  461   Wed May 26 06:27:18 2021 Michele, BeatrizRunsRun 01272021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0127.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: 06:26:55 26.05.2021
run stop: 07:18:24 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 3 Hz
Xray_ON_bdt: 120 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 5.8e6 (stacked)
ESR particles after decel.: 1.4e6 (more or less)
Target ON density: 1.0e14
  460   Wed May 26 05:20:29 2021 Michele, CobusRunsRun 01262021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0126.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: 05:19:37 26.05.2021
run stop: 06:26:39 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
  459   Wed May 26 04:21:16 2021 Michele, CobusRunsRun 01252021
No. of stacks: 20
length SC10: 3x 5.5s
bump ge01sq2f (sc10): -20 mm (before -10 mm)

open file : e127b_run0125.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: 04:20:15 26.05.2021
run stop: 05:19:30 26.05.2021
_______________________________________________________________________________

ON Rates
Si_ON_bdt: ~ 2 Hz
Xray_ON_bdt: 210 Hz
BaF_OR: ---

Si voltage: 100.0 V
Si leakage current: 380 nA


SIS particles before: 2.8e9 (one shoot)
ESR current at injection: 5.5e6 (stacked)
ESR particles after decel.: 1.7e6 (more or less)
Target ON density: 1.0e14
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