ID |
Date |
Author |
Category |
Subject |
195
|
Fri Jul 2 03:19:49 2021 |
IK, KK | Runs | drop of intensity |
And the intensity is back again to 5E9 at 03:20 |
212
|
Fri Jul 2 14:18:04 2021 |
Pavlos, Alexandre | Runs | Change of the measurment to 72Br |
Both resonators will now be retuned to look for the isomeric state in 72Br.
Last files for 70Se are:
245MHz-2021.07.02.14.17.14.507.tiq
410MHz-2021.07.02.14.16.48.528.tiq |
218
|
Fri Jul 2 19:57:12 2021 |
Shahab, Yuri, Wolfram, Liliana | Runs | stop DAQ |
At 19:56 the DAQ is stopped.
The plan is to go back to the setting for Se.
Last files for the Br setting:
- 410MHz-2021.07.02.19.57.36.721.tiq
-245MHz-2021.07.02.19.58.03.216.tiq |
219
|
Fri Jul 2 20:01:16 2021 |
Liliana | Runs | Some plots from the Br setting |
|
2
|
Wed Apr 28 09:36:39 2021 |
Helmut Weick | Simulations | LISE file for fragments from TE3UF into ESR |
Uncooled beam on target at TE3UF with dispersion and slit in TE beamlne and realistic injection into ESR.
Now tuned for 72Ge but can easily be modified to other fragment settings.
The target thickness may need adjustemet after measurement.
The attched powerpoint file explains the settup a bit more. |
3
|
Tue May 4 13:26:40 2021 |
Yuri | Simulations | Expected spectrum 72Ge |
A Z M/q Int difference in kHz@245MHz
68 30 2.263614752 35 -933.1
70 31 2.255131564 124 -457.0
36 16 2.247394703 1 -21.2
45 20 2.24726171 1 -13.7
81 36 2.247136805 1 -6.7
72 32 2.247041397 376 -1.3
72 32 2.247018215 376 0
63 28 2.246941324 1 4.3
54 24 2.246906236 1 6.3
74 33 2.239572482 568 420.9
65 29 2.238342523 100 490.5
76 34 2.232371568 62 829.3
67 30 2.230357529 100 943.7
69 31 2.222859086 172 1370.7
60 27 2.219224118 100 1578.3
62 28 2.211179746 100 2038.7
77 35 2.197207311 116 2842.5 |
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 better. |
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. 78Kr35+ even has a chance of being injected. |
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, but we anyway want to cut the acceptance.
Dispersion will oscillate with the tune of ESR. After 3 turns we expect a maximum dispersion.
The picture shows in red the dispersion curve for dp/p=0.1% and beam envelopes of 10 mm mrad.
So we can use scrapers in north or south arc to cut Brho. It should be done from both sides.
How much? Watch the intensity drop.
Best positions look at plot. Straight section outside for low Brho, arc outside for high Brho.
Could be EEXDS2HA and E02DSH (outside). |
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 (S S).
Depending on the choice select different start beam parameters at top of file, others comment out.
There are also different optics setting with different quadrupoles:
- for TE beamline the standard and the mode by Hans for better focus on the target.
- for ESR a standard mode and variations of isochronous modes
also select by commenting in/out.
Input can be made also in units of K'L for fast import from parammodi, still by hand but with copy and paste.
One half of ESR is defined as a block, can be used more or less often (B I HALF ;) |
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 are adjusted to the 72Ge data.
Some lifetimes are limited but all intense lines are >30s in lab system.
There are two versions (for cooled beam with fixed v or uncooled (isochronous)
with fixed average Brho, take the second (grey) column.
For larger frequency shifts harmonics will overlap.
You can add more isomers. |