| ID |
Date |
Author |
Category |
Subject |
Text |
 |
|
4
|
Tue May 4 17:54:08 2021 |
Helmut Weick | Simulations | updated LISE file | This file really has the optics like used
in the last ESR experiments.
Now the transmission is also a little bit |
|
|
5
|
Tue May 4 18:25:31 2021 |
Helmut Weick | Simulations | cutting of primary beam | The slits at TE4 and TE5 can be used to cut
away the unwanted 78Kr beam (see pictures).
We do not want activation of the beamline. |
|
|
6
|
Tue May 4 21:49:04 2021 |
Helmut Weick | Simulations | cut Brho by scrapers | The dispersion from the production target
into the ESR is not matched.
This is not good for momentum acceptance, |
|
|
8
|
Thu May 6 00:32:57 2021 |
Helmut Weick | Simulations | GICOSY file for TE beamline and ESR | This file has several options:
start in SIS, at TE3UF target or inside ESR,
choose with GOTO LABEL (G L)after start system |
|
|
9
|
Thu May 6 13:26:56 2021 |
Helmut Weick | Detectors | TE5 profile grids do not work | There are several issues.
1. The stepper motor drive does not react |
|
|
10
|
Thu May 6 14:28:32 2021 |
Helmut Weick | Calibration | Be target thickness calibration -> 1839 mg/cm^2 | Injection was optimized before with Cu-40
mg/cm^2 stripper.
This reduces energy of 78Kr from 370 MeV/u |
|
|
21
|
Fri May 7 01:07:27 2021 |
Helmut Weick | Analysis | maybe frequency ID | We think we see the frequency range of A/q=2.25
at 243.1 MHz.
This would correspond to L=108.2m and E=386.4 |
|
|
27
|
Fri May 7 03:44:55 2021 |
Helmut Weick | Accelerator | scraper optimisation | Opened TE4 slits again to +/-10mm.
Then we tried different scrapers:
|
|
|
64
|
Sat May 8 01:33:25 2021 |
Helmut Weick | Simulations | frequency list for 70Se setting | EXCEL table with all possible fragments injected
into ESR.
The path length in ESR, gamma_t and harmonic |
|
|
65
|
Sat May 8 01:43:23 2021 |
Helmut Weick | Accelerator | 70Se setting | If gamma_t = 1.3955 Tm stays, we will need
Brho = 6.21902 Tm for 70Se.
The corresponding ESR Brho setting will be |
|
|
76
|
Sat May 8 16:08:58 2021 |
Helmut Weick | Accelerator | beam position of Kr before ESR | Checked beam positions in beamline before
ESR,
they all look the same as before, with direct |
|
|
134
|
Thu Jun 24 22:05:11 2021 |
Helmut Weick | Accelerator | LISE files for 72Ge, 70Se, 52Mn settings | This is just a Brho selection by the ESR based
on SIS-energy used,
energy-loss in target with calibrated thickness |
|
|
85
|
Sun May 9 01:19:47 2021 |
Helmut, Sergey | Accelerator | scraper optmisation for 72Ge | To improve the isochronicity still in the
72Ge setting sextupoles and scrapers wer
varies successfully.
|
|
|
80
|
Sat May 8 21:08:13 2021 |
Helmut, Sergey, Shahab, Wolfram, Yuri | Accelerator | optimisation of sextuples | The optimisation of sextuples is finished.
Record a few files. |
|
|
86
|
Sun May 9 01:49:25 2021 |
Helmut, Sergey, Yuri | Accelerator | change to 52Mn |
It was done in steps:
isochronous 52Mn should come at Brho = 6.28239 |
|
|
138
|
Tue Jun 29 20:13:58 2021 |
Helmut, Sergey, Yuri | Accelerator | change to predrilling an 72Ge | After optimisation of sextupoles we found
a scraper position which makes a narrow peak
and keeps 20% of the injected beam.
|
|
|
110
|
Sun May 9 18:50:23 2021 |
Helmut, Wolfram, Yuri | Accelerator | changed to 70Se | 18:45 changed SIS, ESR setting for 70Se without
predrilling blind change.
E-SIS = 446.55 MeV/u, is centerd as before |
|
|
114
|
Sun May 9 21:29:26 2021 |
Helmut, Wolfram, Yuri | Accelerator | target TE3UF shift | We see a very strong line at the left end
of spectrum, stronger than all other lines.
When we shift the target TE3UF_H from -35mm |
|
|
115
|
Sun May 9 22:31:23 2021 |
Helmut, Wolfram, Yuri | Accelerator | change to 72Ge | we change back to 72Ge
just change SIS-energy E = 441.0 MeV/u
beamline energy after target E = 392.9 MeV/u
|
|
|
116
|
Sun May 9 23:24:49 2021 |
Helmut, Wolfram, Yuri | Accelerator | scraper optmisation for 72Ge | We tried the scrapers a bit, because right
of peak some background appeared.
|
|