MUST2 SAMURAI_2018 S3-LEB-LPC SUPERNEMO MUGAST EXPAND SCALP GALATRON HiCARI VELO
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Status ExpNbr Date Author Type Categorydown Target-Source Subject
Fixede768s Mon Jul 29 07:16:39 2019 Chloe & TeodoraRUNGeneralLiFScreenshots run 156_2
Fixede768s Mon Jul 29 08:07:05 2019 Faïrouz & AndresRUNGeneralLiFBeam-profile and scalers (run156) @ 8h07
Fixede768s Mon Jul 29 11:05:19 2019 Faïrouz & AndresRUNGeneralLiFScreenshots run 156 @ 11h05
Fixede768s Mon Jul 29 11:48:13 2019 Faïrouz & Andres & SylvainRUNGeneralLiFThe beam intensity decreased to 2.4e6 pps due to instabilities in the source
The operators are trying to stabilize the ECR source before trying to optimize the beam
Fixede768s Mon Jul 29 13:46:11 2019 Faïtrouz, Nicolas & FreddyRUNGeneralLiFBeam intensity increased to 7e6 pps
Fixede768s Mon Jul 29 15:20:50 2019 Sylvain Andres, Freddy, Adrien, FranckBEAMGeneralLiFBeam profile after beam intensity obtimisation
Beam recover at around 15:00 after beam optimisation by PCP
Fixede768s Mon Jul 29 15:58:53 2019 Freddy, SylvainBEAMGeneralN/ABeam profile and scaler r156
beam down to 3.4*10^6 pps at 16h00 (or VAMOS 200 pps)
Fixede768s Mon Jul 29 17:49:18 2019 Freddy, SylvainRUNGeneralLiFBeam status
At about 17:15 beam suddenly stopped. PCP operators are investigating the issue.
Fixede768s Mon Jul 29 18:59:51 2019 OttoRunRUNGeneralLiFRun158
*************************
Run : 158
*************************

Start at 2019-07-29 18:59:00.751661

15O beam

Brho = 0.556 Tm

target LiF thick number 1

OR VAMOS 474
OR Mugast 106
Fag 133

beam intensity XX

TRIGGERS:
MG BACK
MG 90
MUST2
VAMOS%10
BF2%100


restart after VAMOS optimization

Stop at 2019-07-30 11:04:58.183397
Stop comment: changing AGATA 01B parameter file
Fixede768s Mon Jul 29 19:49:19 2019 Freddy, Sylvain, NicolasBEAMGeneralLiFRun 158 : Beam profile after beam tuning
Below is the beam profile and the scaler corresponding to the beam after optimisation

Edit : beam intensity is strongly fluctuating : current intensity is 2 10⁶
Fixede768s Mon Jul 29 22:00:00 2019 Freddy, SylvainBEAMGeneralLiFScaler Evolution run 158
Evolution of scaler during run0158 _ from 19h to 24h00

--> Beam extremely unstable from zero to 10**7 pps (for not more than 5 min).
--> Several moment without beam, either lost at C0 or trying to optimize.
Ongoinge768s Mon Jul 29 22:50:43 2019 Sylvain & FreddyONLINEGeneralLiFScreenshots run 158 @ 22h05
Fixede768s Tue Jul 30 01:20:21 2019 Jenn & FrancoBEAMGeneralLiFBeam intensity, profile check and SUMMARY night
In run 158 at around 01:00am PCP took the beam to try to optimize it. We got the beam back after ~15 minutes.

Beam intensity ~1.2e7
OR MUGAST ~ 160
OR VAMOS ~ 650

30 minutes later: comparing the actual beam profile with the previous ones it looks like the beam has shifted on the horizontal axis (before the centroid was -1.9, now it is -3.4).
At the same time we noticed an increase in the AGATA counting rate (~ 35k). AGATA itself is not very stable, each now and then all the detectors go in back pressure for few
seconds and then they come back to the normal status. Moreover we see more counts on the second line in the correlation matrix (see figure attached). We think that maybe
with the last optimization the beam is slightly touching somewhere out of the target.

At 02:15am there was a problem with the vacuum on the PCP side so the beam went off. We wait for a guy to come in ~45min and solve this issue or understand WThell is happening.
RUN 158 won't be stopped to avoid DAQ problems.

TO UNDERSTAND: even after beam stopped 30 min ago, OR Vamos is still counting ~100 Hz while AGATA and MUGAST are counting nothing.
Fixede768s Tue Jul 30 04:04:27 2019 Jenn & FrancoRUNGeneralLiFBeam back at 4.00 h
We had the beam back at 4.00 a.m.
Beam profile and intensity checked: 1.2e7

OR VAMOS ~ 630
OR MUGAST ~ 170
OR AGATA ~ 35k

The AGATA rate is still very high.
Fixede768s Tue Jul 30 04:25:49 2019 Jenn & Franco & TeodoraBEAMGeneralLiFBeam intensity, profile check and SUMMARY night

This is what we were seeing in agata. We think it might be possible we were having a bit of beam implanted somewhere. We called PCP to check.



Jenn & Franco wrote:
In run 158 at around 01:00am PCP took the beam to try to optimize it. We got the beam back after ~15 minutes.

Beam intensity ~1.2e7
OR MUGAST ~ 160
OR VAMOS ~ 650

30 minutes later: comparing the actual beam profile with the previous ones it looks like the beam has shifted on the horizontal axis (before the centroid was -1.9, now it is -3.4).
At the same time we noticed an increase in the AGATA counting rate (~ 35k). AGATA itself is not very stable, each now and then all the detectors go in back pressure for few
seconds and then they come back to the normal status. Moreover we see more counts on the second line in the correlation matrix (see figure attached). We think that maybe
with the last optimization the beam is slightly touching somewhere out of the target.

At 02:15am there was a problem with the vacuum on the PCP side so the beam went off. We wait for a guy to come in ~45min and solve this issue or understand WThell is happening.
RUN 158 won't be stopped to avoid DAQ problems.

TO UNDERSTAND: even after beam stopped 30 min ago, OR Vamos is still counting ~100 Hz while AGATA and MUGAST are counting nothing.
Fixede768s Tue Jul 30 04:40:18 2019 Jenn & Franco & TeodoraRUNGeneralLiFBeam back at 4.00 h
Due to the high rate of AGATA and Mugast (probably due to some implantation) we asked the PCP to readjust the beam.
They centered it a bit more on the profiler and now it looks better. Attached are the new rates.

OR VAMOS ~ 620
OR MUGAST ~ 170
OR AGATA ~ 7k


Jenn & Franco wrote:
We had the beam back at 4.00 a.m.
Beam profile and intensity checked: 1.2e7

OR VAMOS ~ 630
OR MUGAST ~ 170
OR AGATA ~ 35k
Fixede768s Tue Jul 30 05:32:33 2019 Teodora & FrancoRUNGeneralLiFScreenshots run 158 - 5:30h + beam profile at 6:00h
Scalers and beam profile measurement taken at 6:00 h.
Fixede768s Tue Jul 30 07:49:09 2019 Teodora & FrancoRUNGeneralLiFCheck beam intensity and profile run158 h 8:00
Fixede768s Tue Jul 30 11:08:30 2019 OttoRunRUNGeneralLiFRun159
*************************
Run : 159
*************************

Start at 2019-07-30 11:07:33.907674

15O beam

Brho = 0.556 Tm

target LiF thick number 1

OR VAMOS 653
OR Mugast 156
Fag 206

beam intensity 1.3e7 pps

TRIGGERS:
MG BACK
MG 90
MUST2
VAMOS%10
BF2%100

Stop at 2019-07-30 16:22:08.584979
Stop comment:
Fixede768s Tue Jul 30 15:47:46 2019 NicolasBEAMGeneral Beam stopped since 11h30
vacuum problem in CSS1
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