Analyzing #396
Analyzing #436: Reference reaction: Data analysis
Analyzing #459: Beam of 10Be
Profile of the 10Be beam
| Status: | Открыта | Start date: | 11/14/2019 | |
|---|---|---|---|---|
| Priority: | Нормальный | Due date: | ||
| Assignee: | Ivan Muzalevsky | % Done: | 100% | |
| Category: | - | |||
| Target version: | - |
Description
Provide 2D plot of the beam profile in the target plane (in mm).
- without particle selection in ToF;
- for events where 10Be only selected;
- with beam trigger only;
- trigger from one (the typicall) side telescope (without beam trigger);
- trigger from all side telescopes (without beam trigger);
- show the 10Be selection used for further analysis in abovementioned plots
- report the 10Be selection separately in analytical form
Provide used MWPC's coordinates in mm.
History
#1 Updated by Ivan Muzalevsky about 5 years ago
- % Done changed from 0 to 100
#2 Updated by Vratislav Chudoba over 4 years ago
- Subject changed from Beam profile to Profile of the 10Be beam
- Description updated (diff)
- Parent task changed from #393 to #459
#3 Updated by Vratislav Chudoba over 4 years ago
- Project changed from EXP1904 to EXP1904: Reference reaction
#4 Updated by Ivan Muzalevsky over 4 years ago
I used following coordinates of the MWPC planes, provided by S.Krupko
MWPC1(-0.9,-3,-815)
MWPC2(0.3,-1.55,-270)
On the following pictures I used the 10Be dE-ToF selection described in issue 394. The beamprofile without particle selection can be provided later if needed.
at the following pictures 2D beam profile at the central target plane is presented:
- tof left:beam trigger only
- top right:trigger ==4 (third telescope)
- bottom left: trigger from any side telescopes (without beam trigger)
- bottom right: trigger from any side telescopes, with were equalized SSD triggers.
On the following picture, the 10Be profile is presented for trigger from any side telescopes, with equalized SSD triggers. (bottom right figure from the previous one). Red circle shows the used target condition (circle of 9 mm radius with a center at (0.47,0) mm)
So, the target condition looks like:
(fXt-0.467)-*(fXt-0.467) + (fYt-0.03)*(fYt-0.03) < 9*9,
where fXt and fYt are coordinates of the 10Be beam at the central target plane (Z=0)
#5 Updated by Ivan Muzalevsky over 4 years ago
- % Done changed from 100 to 50
#6 Updated by Vratislav Chudoba over 4 years ago
- % Done changed from 50 to 100
#7 Updated by Vratislav Chudoba over 4 years ago
We pay attention to the possible discrepancies with task 357.
One may observe that an anticipated position of the target cell was shifted. For the moment we are not sure about the origin of this shift. We need to check logbooks that are not available at the moment.
We suppose that a modification of the setup between 8He and 10Be beamtimes occurred. Very probably, calibration measurements without the target were carried out between the abovementioned sessions. Nevertheless, this fact has to be proved, and therefore, we state "Done" as 90 percent for the moment and continue our data analysis under the assumption that the position of all detectors was the same for both measurements.