| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Fixed | e744 |
Fri May 18 17:38:21 2018 |
Francois and Pedja | OTHER | Hardware | | translator nim to ecl |
| There was a problem with the scalers, not all of them were working. After several tests, we changed the electronic module, from Lecroy ECl-NIM-ECL to module LPC translator NIM-ECL. We checked all channels, they work. For a while channel N°4 was not working. We changed the nim cable, it works now. |
| Pending | e744 |
Wed May 30 15:26:40 2018 |
Francois Marlete | BEAM | General | | problem with beam |
| 14H00 : The primary beam was misaligned, they are still working on it. No 14O beam. |
| Ongoing | e744 |
Wed May 16 09:49:26 2018 |
Francois & Ruxandra & Armel | BEAM | Hardware | | E1D6 and E2D6 detectors |
After struggling with the noise, we achieved ~ 50 keV resolution.
Source = 1 alpha peak 241Am E=5.485 MeV
Detector E1D6 50 µm 25 V in principle, but set to 100 V
Detector E2D6 300 µm 70 V in principle, but set to 100 V
PA gain = 20 mV/MeV
Maximum output signal of the new PA (differential) = 8 V. |
| Fixed | e744 |
Mon May 28 12:22:42 2018 |
Francois & Marlete | OFFLINE | General | | superposition exp / theory for 15O and 15F |
|
| Fixed | e744 |
Sun Apr 29 20:37:58 2018 |
Francois | CATS | General | | Chronogram |
|
| Ongoing | e744 |
Mon May 14 12:57:44 2018 |
Francois | TARGET | General | | target preparation |
Cibles Georges
1) Plastique 63 µm
2) 104 µm
3) 200 µm
Cibles GoodFellow
4) Carbone 0.075 mm (je calcule épaisseur de 8,9 mg/cm2)
5) Polyéthylčne 63 µm
6) Polyéthylčne 0,1 mm = 100 µm
7) 2 cibles de 100 µm en sandwich = 200 µm
|
| Pending | e744 |
Tue May 22 19:40:26 2018 |
Francois | BEAM | General | | Planning of the experiment |
|
| 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 |
Tue May 29 10:42:00 2018 |
Francois | BEAM | General | | effective beam time |
In total, there were:
1.4 UT of 14O, average 2x10^5 pps
0.7 UT of 14N, calibration
0.7 UT of background subtraction (carbon)
+ plot of the beam current during the last day. |
| Fixed | e755 |
Sun Jun 24 09:48:46 2018 |
Francois | BEAM | General | | No beam |
9H10: D5 stopped at 9H10. We asked for the beam.
9H48: Still no beam. There is a problem with the beam current limits set in the accelerator. They have to change it from 40 nAe between CO1 and CSS1 to 3.8 µAe after CSS2.
10H05: Still no beam. Vincent arrived for the air conditioning of D6.
10H23: No beam. They have to re-align the beam in the alpha line.
11H45: Beam is back after alignment of the entrance of the LISE line |
| Fixed | e744 |
Tue May 29 02:01:58 2018 |
Franck, Valerian, Phil | RUN | General | Carbon | Run 2104 - Target 1 Carbon |
Run 2104
Beam: 14O
Start @ 2:00 29 May 2018
Stop @ 4:01 29 May 2018
Target 1 Carbon
Franck, Phil, Valerian
Beam rate (CATS): 1.4e5 pps |
| Fixed | e744 |
Tue May 29 02:38:21 2018 |
Franck, Valerian, Phil | ONLINE | General | Carbon | Spectra and HV Start Run 2104 |
|
| Fixed | e744 |
Tue May 29 04:08:52 2018 |
Franck, Valerian, Phil | RUN | General | Carbon | Run 2105 - Target 1 Carbon |
Run 2105
Beam 14O
Start 4:06 29 May 2018
Stop 6:06 29 May 2018
Target 1 Carbon
Franck, Valerian, Phil |
| Ongoing | e744 |
Tue May 29 06:09:58 2018 |
Franck, Phil | RUN | General | Carbon | Run 2106 - Target 1 Carbon |
Run 2106
Beam 14O (CATS: 1.4e5 pps)
Start 6:08 29 May 2018
Stop 6:17 29 May 2018
Stopped because FAG rate low and ORDs low, "BAD MERGE" error messages
Target 1 Carbon |
| Ongoing | e744 |
Tue May 29 07:39:53 2018 |
Franck, Phil | RUN | General | Carbon | Run 2107 - Restart after Reboot of VXI - Same problem |
Low FAG rate: 30 /s
Low ORD rates: 0-10 /s, 15 /s on MM5 |
| Fixed | e738 |
Wed Jul 11 09:32:37 2018 |
Franck, Jacques, Daisuke | RUN | General | Cryo-LH2 | Run 342 |
Wed 11 July 2018
Start @ 9:19
Stop @ 9:29
CATS1 : 200 kcps
CATS2 : 100 kcps
RUN STOPPED TO REPLACE CATS2 |
| Ongoing | e738 |
Wed Jul 11 15:41:33 2018 |
Franck, Jacques, Daisuke | RUN | General | Cryo-LH2 | Run 347 |
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 µA , CATS2 0.12 -> 1 µA
Current spikes on CATS2 less frequent than at 670 V
Rates:
CATS1: 215 kcps
CATS2: 186 kcps
CAVIAR: 250 kcps
Plastic: 190 kcps |
| Fixed | e738 |
Wed Jul 11 12:04:29 2018 |
Franck, Jacques + CATS Team | CATS | General | N/A | Run 343 - CATS2 pulser calibration |
Start 11:53
Stop 11:59
CATS2 pulser calibration
Attenuations: 1, 2, 4, 5
+ pedestal |
| Fixed | e748 |
Mon Jul 3 14:28:09 2017 |
Franck et Valérian | CHIO | Hardware | N/A | CHIO's electronic scheme |
| A quick scheme of the CHIO electronic. The patch outputs are the one from the LISE acquisition room. |
| Fixed | e748 |
Tue Jul 4 20:27:59 2017 |
Franck et Valérian | CHIO | Hardware | N/A | UPDATE : CHIO's electronic scheme (valid from run 217) |
| Modification of the scheme to add the delay on the CHIO's logic signal for stop of the digitizer. |