| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Ongoing | e738 |
Mon Jul 9 23:21:55 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | temperature log of the target |
Here are the temperature logs of the liquid H2 target up to now.
I would share the log during the regeneration. |
| Fixed | e738 |
Mon Jul 9 23:25:10 2018 |
takeshi | RUN | General | Cryo-LH2 | run summary for 10C beam |
With 10C beam, we have obtained
31.7 hours of liq. H2 target and
1.2 hours of empty target.
see online run summary for detail.
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit#gid=805236919 |
| Ongoing | e738 |
Wed Jul 11 08:32:42 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | temperature log of the target |
|
| Ongoing | e738 |
Thu Jul 12 13:49:38 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | temperature log of the target |
|
| Fixed | e738 |
Fri Jul 13 04:09:10 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | temperature of the target |
We found the target temperature suddenly increased at around 3:40 13th.
The online beam image is still indicating the target is filled up to now. |
| Fixed | e738 |
Fri Jul 13 09:03:11 2018 |
takeshi | RUN | General | Cryo-LH2 | run summary 9C + H2 |
Here is the run summary of the setting 9C beam + liquid H2 target.
Up to now, we have obtained 78 hours data, including missing strips in CATS , MUST2*BEAM trigger test, and half-filled target.
We will go to 9C + empty setting from 9:10.
See spreadsheet for the detail.
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit#gid=805236919
|
| Fixed | e738 |
Sat Jul 14 09:57:36 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | target temperature during night |
| I would share the temperature log of the target as it was liquefied 21:00 13th. |
| Fixed | e738 |
Sun Jul 15 00:48:03 2018 |
takeshi | RUN | General | N/A | run summary |
Here are the run summary of E738 experiment up to 1:00 am 15th.
31.7 hours for 10C + H2
1.2 hours for 10C + empty
82.3 hours for 9C + H2
5.9 hours for 9C + empty (ongoing, should be 23 hours at 18:00 15th)
19.5 hours for 12C + H2
See here for detail.
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit#gid=805236919 |
| Fixed | e738 |
Sun Jul 15 01:26:49 2018 |
takeshi | TARGET | Hardware | Cryo-LH2 | temperature log of the target |
| Here are the temperature log of the target before it was evaporated. |
| Fixed | e738 |
Sun Jul 15 19:05:20 2018 |
takeshi | RUN | General | N/A | run summary of E738 |
Runsmmary of the E738 experiment.
31.7 hours for 10C + H2
1.2 hours for 10C + empty
82.3 hours for 9C + H2
19.5 hours for 9C + empty
19.5 hours for 12C + H2
See here for detail.
https://docs.google.com/spreadsheets/d/1yErcQcrXPdJjEOfUd9D9KPWWkWQpw5kX4wFze6vwij4/edit#gid=805236919 |
| Fixed | e755 |
Thu Jun 21 08:30:48 2018 |
shumpei, daisuke | RUN | General | 3-alpha | RUN0040 8 MeV source run with liquid hydrogen |
RUN 0040. started 7:23 am
8 MeV source was set upstream at 0 degrees to confirm that the target is filled with liquid. The target has been cooled since 4 pm yesterday. From the record of temperatures and pressure, it is likely that hydrogen stays in the liquid phase. It has yet to be confirmed if hydrogen inside the cell is still in liquid or partially evaporated.
target cell 18.180 K
heat shield 114.62 K
H2 gas -0.23 atm
M2C 3.09e-6 mbar
There are events in T5 and T6, but without any clusters formed at an energy of 250 ADC channels (expected energy for alpha particles that traverse hydrogen gas). Need more analysis to conclude. |
| Fixed | e738 |
Sat Jul 7 14:33:45 2018 |
shumpei takeshi megumi | TARGET | Hardware | Cryo-LH2 | Liquid H2 status |
| We start liquifying H2 at 14:09 and seems to be filled at 14:29. |
| Fixed | e744 |
Fri May 25 17:42:21 2018 |
shumpei | MUST2 | Software | N/A | CsI energy calibration for MUST2 telescopes |
Calibration parameter for MUST2 CsI crystals are calculated with run1001-1006.
Attached are dE(DSSD)-E(CsI) plot of all the telescopes and parameters.
The parameter files are in
/home/e748/analysis/nptool/Projects/e744/Calibration/Energy/Calibration/CsI_rough
How to make the parameters;
For dE-E plot, the strongest locus should be proton.
Approximation formula for proton dE (Si 300 micrometer)-E (residual) I used is
(CsI_Energy) = -6.81774+41.1823/(Si_Energy-0.0814779).
Absolute value for the total energy may have some offset, but the gain of all the crystals should be roughly matched.
Maybe we need one more common parameter to adjust absolute value.
T2 Crystal #1 and #10 have no data. As I remember, this is the same as E748 exp. last year.
Crystals #9 for all the telescopes have low statistics. I'm afraid the mapping of crystal #9 is not correct.
->nptool/NPLib/Detectors/MUST2/TMust2Physics.cxx m_CsI_MatchingY[8]=48 but should be equal to 16 (corrected and re-compiled 27/05/2018). |
| Fixed | e744 |
Mon Jun 4 18:45:15 2018 |
shumpei | MUST2 | Hardware | N/A | No data for two CsIs of MUST2 |
During E744 experiment, two CsI crystals (number 1 & 10) of MM2 had no data as attached.
When the M2C chamber was opened today, I found at least connection for CsI number 1 of MM2 has a problem.
It takes some time to fix the connection for CsI, so it may be going to be fixed after some hardware problems are found in this week. |
| Fixed | e755 |
Thu Jun 14 19:03:06 2018 |
shumpei | OFFLINE | Hardware | N/A | 8MeV alpha source T5&T6 |
8MeV alpha source image on the target was reconstructed from T5&T6 hit position and target position information.
The target is something like 2 cm diameter collimator.
Now the center of the image is a little bit close to T6(bottom) maybe because the center of the target is placed to bottom side at room temperature since the target length will be shorten when it is cooled down. |
| Fixed | e755 |
Sat Jun 23 06:10:01 2018 |
shumpei | OFFLINE | Software | CH2 | 40Ca(p,d)39 reaction |
Quick off-line analysis for 40Ca(p,d)39 reaction is shown.
Used gate - target image and dE-E cut for deutron locus
Kinematics is also shown. Energy is shifted but seems good.
I used calibration parameters for CsI made in E744 exp.
Joint the exitation energy spectra of 39Ca |
| Fixed | e755 |
Sun Jun 24 22:25:53 2018 |
shumpei | MUST2 | Hardware | Cryo-empty | threshold for DSSDs of MUST2 |
Threshold of DSSDs were changed (see entry 638).
Run 106 was analyzed and now the threshold seems about 0.4 MeV. |
| Fixed | e755 |
Tue Jun 26 06:55:51 2018 |
shumpei | OFFLINE | Software | Cryo-LH2 | 38Ca (p,t) 36Ca |
Run 111 - 134 (almost 1 day) data was analyzed.
38Ca (p,t) 36 Ca was reconstructed only from Telescope 3.
About 500 events for most likely 36 Ca g.s.
Gate condition;
1. Inside target by CATS1&2
2. dE-E triton only by Telescope 3 and multiplicity 1
3. TOF gate to select 38Ca beam |
| Fixed | e755 |
Thu Jun 28 19:58:12 2018 |
shumpei | OTHER | General | N/A | Kinematics for the reactions |
| Kinematics for the reaction of E755 and E738 experiments are shown. |
| Ongoing | e744 |
Sun May 20 19:11:57 2018 |
ruxandra cristina giuseppe jaromir | EXL-PPT | Hardware | 60Co | EXL-addback and light leak considerations |
in the middle of the considerations - pdf file
Content:
Light leak between PM-pair
Zamora theses
Peyre R3B development
Runs 302, 339
There were huge loads, DT not under control, the LaBr and EXL did not coincide.... solved 2018/05/22
Run 347 background - better |