| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Fixed | e744 |
Sat May 26 11:19:37 2018 |
Giuseppe, Dieter | RUN | General | CH2 | interruption due to to waterleak ibn CSS1 |
10:50 h Water leak at CSS1
cryo pumps have to be regenerated
continuation until the expert intervention starts is possible
presently waiting for resubmission of the beam
11:40 h started new run (run2019 - see next entry)
11:43 h another leak occurred and it was decided to stop the beam, data taking continues |
| Fixed | e744 |
Sat May 26 11:42:03 2018 |
Giuseppe, Dieter | RUN | General | CH2 | run 2019 |
Run 2019
start@ 11:40 26/05/2018
stop @ 11:52
the beam intensity dropped to 22 pps so we stopped |
| Pending | e744 |
Sat May 26 13:22:08 2018 |
Francois | BEAM | General | | problem with CSS1 |
There is a leakage of water in cavity north of cyclotron CSS1. I discussed with Alain Savale.
There are 2 options:
1) We take the beam as it is, probably deteriorated, with a lower intensity. There is a risk of break up in CSS1. The vacuum of the cavity is maintained probably by a small piece of ice only.
2) They can make a new setting of CSS1, using only one acceleration cavity (south). They would stop the north cavity and reduce the water pressure. In this case the beam is also deteriorated.
Decision:
We chose option 1 and we will observe the stability of the vacuum in CSS1 in time. If the stability is bad, vacuum too bad, later in the day they will decide to go to option 2. This means several hours without beam (may be a few hours). |
| Fixed | e744 |
Sat May 26 14:03:27 2018 |
Giuseppe, Dieter, J. Eric | RUN | General | CH2 | Run 2020 |
run 2020
start@ 14:02 26/05/2018
stop @ 15:20 26/05/2018
Missing strips:
x
MM1 1
MM2 6
MM3 0
MM4 2
MM5 0
y:
MM1 3
MM2 1
MM3 0
MM4 7
MM5 3 |
| Fixed | e744 |
Sat May 26 16:31:53 2018 |
Jaromir, Giuseppe | EXL-PPT | Software | N/A | EXL calibration, light leak |
Selector.C can be used to adjust energy bad reconstruction in the EXL detectors due to energy leak (see the PDF attached for more information about it) once we already have the coefficients for the energy on EXL crystals. To operate with it, for first calibration coefficient must be deduced. Once it is done the slopes and offset of the calibration have to be inserted in Selector.C file at lines 41 (a[19]) and at line 49 (b[19]). After thqt thresholds must be fixed (line 58, tr[19]) and also gains on the pairs. We deduced gains as the ratio between x-axis and y-axis of each uncalibrated matrix: for each pair (1-2,3-4,5-6,...,17-18) we took the ratio between x=2000;4000;6000 and the respective y value, and y=2000;4000;6000 and the respective x values. taking the averages of those ratios; those were than used as the coefficients R1ex[9] and R2ex[9] in Selector.C (all information on those values and how are used are in EXL.pdf).
Once the variables are set, the program can be executed using the batch file in attachement by typing the line root rootdir/run_number.root -b batch -q from terminal. Here "run_number" is the name of the run to use. It will generate then a .root file (in attachement some output file for run 0430.root). Now the name is "whatever_output.root", and can be changed from "Selector.C"
The program also provides randomization of bins for the operation of sym between contiguous crystals
|
| Ongoing | e744 |
Sat May 26 20:20:55 2018 |
Valerian | OFFLINE | General | CH2 | 15F observations for target 4 (100um) |
| Analysis offline permits us to conclude that the current target has the good size to observe our resonances. |
| Ongoing | e744 |
Sat May 26 20:23:52 2018 |
Cristina Iulian | OFFLINE | General | | PPT gamma spectrum |
| Attached is the gamma spectrum from PPT detector with a condition on prompt (T_MM_PPT), proton detected in MUST and multiplicity event equal to 1 |
| Pending | e744 |
Sun May 27 15:36:31 2018 |
François | BEAM | Social | | News updated |
19H
They succeeded to get 90 % transmission with CSS1 but the energy at the exit was changed by 4%, that is not compatible with the CSS2 limit of 1 %. After fitting the CSS1 energy they obtained 70-80 % transmission only, but it is enough. The problem with the HF of CSS2 was solved. They are trying to accelerate with CSS2. They are now at midway inside CSS2. They still need several hours to finish the work.
15H
The problem with CSS1 is not yet solved. They want 90% transmission of the beam in CSS1, they have 75%.
There is another problem, the HF of CSS2 has dysfonctionnements.
They don't expect beam before 20H. |
| Fixed | e744 |
Sun May 27 20:47:02 2018 |
e744- Valérie | DAQ | Hardware | N/A | Info to reboot the crates in case of problem |
In case of problems in the run control, if it is not possible to reinstall the crates in the "Ready" mode status,
it is possible to reboot them remotely via the software commands.
this can be done using the iolan windows.
first, open a Terminal, then write:
iolan must2 all
Two windows are opened, for each of the VXI crates. see snapshot IOLANmust2reboot.png
then it is possible to reboot the crates by writing in each of the gansterm terminals the "reboot" command.
(Note that a password is asked, it corresponds to the first letter of all the words between (La cigale ...l'été) in the famous sentence of La Fontaine's fable "La Cigale et la Fourmi" ("The Grasshopper and the Ant").
Then after the operation the run Control Narval should be ready (see snapshot).
If not, it means that we need to enter in the D6 room to reboot the crates directly by pushing the "SYS RES" button (using the tiny yellow screw) on the two crates:
start with the Master crate (ganlx1, the one with the main GMT and MUVI1), then press the button of the second crate (ganlx14, with the GMTslave and the second MUVI).
The click-click on each crate means that the reset is done.
(NB: Simultaneously, the two gansterm terminals show the lines of the on-going reboot operations).
|
| Ongoing | e744 |
Mon May 28 02:07:41 2018 |
Valerian | OFFLINE | General | CH2 | New improved resolution for 14N et 15F |
After correcting position for the Must2 detectors by taking into account the real hit position on the target that was (0,15cm,0) and not (0,0,0). The way to do it was to artificially move every detector 15cm lower.
Joined are the results at 0deg, for 14N the resolution increases from 125keV to 102keV. |
| Fixed | e744 |
Mon May 28 11:00:07 2018 |
Valerian and Iulian and Phil | RUN | General | | two protons |
|
| Fixed | e744 |
Mon May 28 12:22:42 2018 |
Francois & Marlete | OFFLINE | General | | superposition exp / theory for 15O and 15F |
|
| Pending | e744 |
Mon May 28 16:14:29 2018 |
François & Valérie | MUST2 | General | N/A | Cooling system |
Monday 28th 16h10: we refill the cooling system for MUST2. The level should be ok for the rest of the experiment.
(Around 4 days). |
| Fixed | e744 |
Mon May 28 16:32:38 2018 |
E744- Valérie | DAQ | General | N/A | DAS configuration files-References |
| |
| Fixed | e744 |
Mon May 28 18:27:45 2018 |
E744- Valérie | DAQ | General | N/A | High Voltages and intensities on MUST2 |
Check regularly the HT on the MUST2.
NB: without beam the current on Telescope 4 is high, between 9 and 11 µA. see snapshot.
NB: The Ioset was increased at 20 µA on Friday 25th (cf Id entry=490) to avoid trips on this telescope due to strong intensity fluctuations due to the beam. |
| Ongoing | e744 |
Mon May 28 20:28:50 2018 |
Valerian and Simon | OFFLINE | General | CH2 | Explanation for the 0 degree low energy proton |
| The 0 degree energy proton are coming from the beam hitting the aluminum target. If you do a cut on the beam projection on T5 you obtain the black dot on the joined plot. |
| Fixed | e744 |
Mon May 28 20:33:39 2018 |
E744- evening shift LISE+e744 teams (edit Iulan, Valérie) | RUN | General | CH2 | BEAM AGAIN RUN 2100 Tuning |
See plot of the Must2 impacts, Wien filter set at +/-0.8kV
Beam on CATS 1.2 10**5 pps
CH2 183 µm
Div as before |
| Fixed | e744 |
Mon May 28 20:38:21 2018 |
E744- evening shift LISE+MUST2 teams (edit Valérie) | RUN | General | CH2 | RUN 2101 DATA target 4 |
run #2101
start @20h27
stop @22h20
target 4
Evening shift team:
LISE and E744 François, Iulan, Valérian, Louis, Jean-Charles, Marlete A., Pierre D., Simon G., Valérie L.
E744
Beam on CATS 1.2 10**5 pps
CH2 183 µm // ERROR ?? this should be 100um
Div as before
All Triggers in GMT (without LISE) |
| Fixed | e744 |
Mon May 28 22:11:52 2018 |
e748- Louis | EXL-PPT | Hardware | CH2 | EXL4 trigger excess |
| During run 2101, Frequency of the EXL4 channel at 478Hz compared to values around 30Hz for other channels |
| Fixed | e744 |
Mon May 28 22:27:14 2018 |
Simon et Louis | RUN | General | CH2 | RUN 2102 DATA target 4 |
run #2102
start @22h20
stop @23h30
target 4
Evening shift team:
LISE and E744 François, Iulan, Valérian, Louis, Jean-Charles, Marlete A., Pierre D., Simon G., Valérie L.
E744
Beam on CATS 1.3 10**5 pps
CH2 183 µm // ERROR THIS SHOULD BE 100um
Div as before
All Triggers in GMT (without LISE) |