Fixed, e738, Wed Jul 11 07:49:12 2018, Marlčne, Franck, Jacques, Daisuke, RUN, General, Cryo-LH2, RUN 341 
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RUn 341
start 7:44 /stop 9h29
CATS2 high voltage 650V (lowered because it tripped) - I= 0.08uA
CATS2 efficiency ~ 50% |
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Fixed, e738, Wed Jul 11 08:18:00 2018, Nori, CATS, General, Cryo-LH2, CATS efficiency
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The tracking efficiency is diminishing probably due to damaged CATS2. |
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Ongoing, e738, Wed Jul 11 08:32:42 2018, takeshi, TARGET, Hardware, Cryo-LH2, temperature log of the target
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Fixed, e738, Wed Jul 11 09:32:37 2018, Franck, Jacques, Daisuke, RUN, General, Cryo-LH2, Run 342 10x
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Wed 11 July 2018
Start @ 9:19
Stop @ 9:29
CATS1 : 200 kcps
CATS2 : 100 kcps
RUN STOPPED TO REPLACE CATS2 |
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Fixed, e738, Wed Jul 11 12:02:14 2018, NPTeam, OFFLINE, General, Cryo-LH2, Lauching parrallel analysis of multiple run
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We made a parralel conversion script in the conversion folder.
You can run up to 5 run in parallel using the command (for run 331-334 in this example):
./ConvertPhysics.sh 331 332 333 334
when the conversion finnished you will have this display:
- Number of transactions: 3
- Number of transactions: 3
- Number of transactions: 3
- Number of transactions: 3
Please do ctrl-C to get out of the script and start again. |
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Fixed, e738, Wed Jul 11 12:04:29 2018, Franck, Jacques + CATS Team, CATS, General, N/A, Run 343 - CATS2 pulser calibration
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Start 11:53
Stop 11:59
CATS2 pulser calibration
Attenuations: 1, 2, 4, 5
+ pedestal |
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Fixed, e738, Wed Jul 11 13:24:34 2018, Daisuke,CATS team: Séb, Thom ; Franck, Pierre, Valérie, RUN, General, Cryo-LH2, Runs 344-345 12x
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Wed 11 July 2018
run 344 start 12h43 ; stop 13h03
e748 Exxx 900M 11 juil. 13:03 /data/e748X/e755/acquisition/run/run_0344.dat.11-07-18_12h43m33s
run 345 start 13h02 ; stop 14h49
e748 Exxx 3,2G 11 juil. 14:49 /data/e748X/e755/acquisition/run/run_0345.dat.11-07-18_13h02m22s
- - - - - - - - - - - - - - - - - -- - - - - - - - -- - - - - - - - -- - - - - - - - -
change of HV on CATS during Run 345: from 650V to 670V
Current on CATS2 is fluctuating (from 0.12 ľA up to 0.6 ľA) at oscilloscope, signals remain correct.
At 670V it is better for CATS2 efficiency
See plots : run345_EnergyChioRawTsdiff.png and run345_correlDeIChiotofCatsHF.png
Integral for IC is 8075; integral of the physical events in IC DE versus TOF CATS1 is 7548; for CATS2: integral 7044.
We have a rough estimate of CATS efficiencies: 7548/8075= 93%, for CATS2 87%.
The counting rates on CATS have closer values (at 650V, CATS2 is at 130 k pps; at 670V rate is 170k pps)
CATS1: 190k pps
CATS2: 170k pps
Plastic: 175k pps
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Fixed, e738, Wed Jul 11 14:51:13 2018, Daisuke, Franck, Shumpei, Valérie, RUN, General, Cryo-LH2, Run 346
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Wed 11 July 2018
run 346 start 14h50; stop 15h14
748 Exxx 777M 11 juil. 15:14 /data/e748X/e755/acquisition/run/run_0346.dat.11-07-18_14h48m47s
- - - - - - - - - - - - - - - - - -- - - - - - - - -- - - - - - - - -- - - - - - - - -
CATS1 670V I~0.14ľA
CATS2 670V ; Current on CATS2 is fluctuating (from 0.12 ľA up to 0.6 and 0.98 ľA).
CATS1: 200k pps
CATS2: 180k pps
Plastic: 190k pps
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Ongoing, e738, Wed Jul 11 15:41:33 2018, Franck, Jacques, Daisuke, RUN, General, Cryo-LH2, Run 347
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Run 347 Start 15:28 stop 17h17
e748 Exxx 3,6G 11 juil. 17:17 /data/e748X/e755/acquisition/run/run_0347.dat.11-07-18_15h28m32s
CATS thresholds lowered from 40 to 24 mV
CATS2 HT lowered from 670 to 650 V
Currents: CATS1 0.16 ľA , CATS2 0.12 -> 1 ľA
Current spikes on CATS2 less frequent than at 670 V
Rates:
CATS1: 215 kcps
CATS2: 186 kcps
CAVIAR: 250 kcps
Plastic: 190 kcps |
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Fixed, e738, Wed Jul 11 16:51:50 2018, Nori, CATS, General, Cryo-LH2, CATS efficiency
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The tracking efficiency recovered after replacing CATS2.
9C 91%
8B 87%
7Be 77%
6Li 62% |
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Ongoing, e738, Wed Jul 11 17:25:11 2018, Louis, Daisuke, Nori, Valérie, RUN, General, Cryo-LH2, Run 348
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Run 348 Start 17h17
Beam: 9C at 2.3*10⁵pps in CATS1, 2uA of intensity of the primary beam
CATS1 670V 0.16 ľA ,
CATS2 650V 0.12 -> 0.6 ľA
Rates:
CATS1: 230 kpps
CATS2: 200 kcps
CAVIAR: 260 kcps
Plastic: 200 kcps |
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Fixed, e738, Wed Jul 11 18:31:23 2018, Jacques, Didier, Louis, RUN, General, Cryo-LH2, Run 349 6x
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Run 349
Start 18h22 Stop 18h47
========================================
Beam: 9C
2.3*10**5pps in CATS1
1.9*10**5pps in CATS2
3.1*10**5pps in CAVIAR
2uA of intensity of the primary beam
CATS1 670V 0.14 ľA
CATS2 650V 0.10 ľA
========================================
Pressure in CAVIAR has been changed from 20mbar to 10mbar because we lost the position correlation with respect to the TOF |
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Fixed, e738, Wed Jul 11 19:08:40 2018, Didier, Louis, RUN, General, Cryo-LH2, RUN 350 10x
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Run 350
Start 19h00 Stop 19h11
========================================
Beam: 9C
2.1*10**5pps in CATS1
1.8*10**5pps in CATS2
1.5*10**5pps in CAVIAR
2uA of intensity of the primary beam
CATS1 670V 0.16 ľA
CATS2 650V 0.10 ľA => 2 over-current/min
======================================== |
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Fixed, e738, Wed Jul 11 19:17:20 2018, Didier, Louis, RUN, General, Cryo-LH2, RUN 351
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Run 351
Start 19h14 Stop 19h53
========================================
Beam: 9C
2.1*10**5pps in CATS1
1.8*10**5pps in CATS2
3.1*10**5pps in CAVIAR (10mbar 720V)
1.9uA of intensity of the primary beam
CATS1 670V 0.16 ľA
CATS2 650V 0.12 ľA => 2 over-current/min
========================================
Good efficiency of CAVIAR at 720V and 10mbar |
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Fixed, e738, Wed Jul 11 20:00:01 2018, Didier, Valérie, Louis, RUN, General, Cryo-LH2, RUN 352 7x
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Run 352
Start 19h57 Stop 21h51
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Beam: 9C
1.9*10**5pps in CATS1
1.7*10**5pps in CATS2
2.7*10**5pps in CAVIAR (10mbar 720V)
1.6uA of intensity of the primary beam
CATS1 670V 0.14 ľA
CATS2 650V 0.10 ľA
========================================
Oil troubles in the Ion source. Vacuum alarm stopped the beam. They call the astreinte
Can see gain decreasing of strip 9 in CATS1 Y |
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Fixed, e738, Wed Jul 11 21:55:23 2018, Daisuke, Didier, Valérie, Louis, RUN, General, Cryo-LH2, RUN 353 6x
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Run 353
Start 21h50 Stop
========================================
Beam: 9C
1.9*10**5pps in CATS1
1.7*10**5pps in CATS2
2.8*10**5pps in CAVIAR (10mbar 720V)
1.8uA of intensity of the primary beam
CATS1 670V 0.14 ľA
CATS2 650V 0.10 ľA
========================================
HV and current stable
beam stable |
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Fixed, e738, Wed Jul 11 23:36:27 2018, Didier, Louis, Freddy, Shumpei, RUN, General, Cryo-LH2, RUN 354
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Run 354
Start 23h33 Stop 1h37
Run stopped due to water leak alarm somewhere under investigation (call from PCP)
========================================
Beam: 9C
Large fluctuation of the beam intensity from 190kpps to few kpps
1.9*10**5pps in CATS1
1.7*10**5pps in CATS2
2.8*10**5pps in CAVIAR (10mbar 720V)
1.8uA of intensity of the primary beam
CATS1 670V 0.12 ľA
CATS2 650V 0.08 ľA
========================================
HV and current stable |
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Fixed, e738, Thu Jul 12 02:12:20 2018, Shumpei, Freddy, RUN, General, Cryo-LH2, RUN 355 7x
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RUN 355
start: 2h04
stop: 4h22
12C primary (1.8 uA)
CATS1: 220 kHz
CATS2: 190 kHz
PL: 198 kHz |
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Fixed, e738, Thu Jul 12 04:40:32 2018, Shumpei, CATS, General, Cryo-LH2, Analysis with only one of the CATSs
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Analyzed data : run 0331
Used reaction : 7Be(p,d)6Be (ground state and 2+ state 1.6 MeV are mainly populated).
Method;
X and Y position on each CATS is compared with position on the target deduced by both CATSs. Assuming the beam profile is not changing, the correlation of these positions can by fit by linear function.
The position on the target can reconstructed with only one of the CATSs, with worse resolution. Beam angular spread seems rather small than angular deduced by only 1 CATS.
In terms of the excitation energy resolution,
sigma of the Subtraction of (both CATS Ex)-(only CATS1 Ex) ~ 0.53 MeV
sigma of the Subtraction of (both CATS Ex)-(only CATS2 Ex) ~ 0.32 MeV
Original estimated Ex resolution is ~ 1 MeV, so not so bad.
In terms of the background from the frame of the target cell, roughly can be removed by target position. Near the center part gate should be more secure. |
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Fixed, e738, Thu Jul 12 05:03:49 2018, Shumpei, Freddy, RUN, General, Cryo-LH2, RUN 356 7x
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RUN 356
start: 4h24
stop: 6h39
12C primary : 1.8 uA
CATS1: 200 kHz
CATS2: 175 kHz
PL : 180 kHz |
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