ELOG E127

beam and target alignement was checked by looking at the Xray rates. Best case when:
Target bump (position) SC 9: -18.5mm

(We were aiming to keep the particles in the beam at a const. level when target switched ON)
pos   bdt
-21   800
-20   1000
-19   1300
-18   1300
-17   1000
-16   500

356

Thu May 20 17:31:28 2021

crap

355

Thu May 20 15:15:54 2021

crap

353

Wed May 19 19:47:14 2021

Yuri

General

Beam Halflife at 30 AMeV

352

Wed May 19 15:09:22 2021

Helmut Weick

General

FRS settings, LISE file

Here is a setting plan for FRS and corresponding LISE files.
2 LISE files still use the old FRS-ESR optics, one the new with S6 focus on slits. 
But this does not make a big difference for the simulation, only dispersion S2-S6 is lower.
For realistic contaminants you must open the slits at S6 more(~ +/-10mm).
Added a list of fragments and expected frequencies after cooling at 400 MeV/u.
Only nuclides close to 118Te in m/q should be cooled.

351

Wed May 19 13:47:26 2021

We have two tasks to take over for the target operation:

1. We have to refill the blue LN2 bottle on the roof of ESR every morning (see 1st attached foto)
For this we use the small silver dewar on the floor there. In case this dewar is empty we have to refill it in the yard.
No need to stop the measurement for this.

2. We have to monitor the LN2-level warning on Ulis web page: http://ulpc24.gsi.de/mediawiki/index.php
In case there is a warning (~12h remaining), we have to refill the big dewar at the target in ESR.
This means we need ESR on TSG with the gate open.

In case the nozzle is clogging and we do not reach reasonable densities anymore and E1 pressure is going down, we have to heat up the nozzle manually.
This can be done at the control panel on the roof of ESR (see 2nd attached foto).
The proceedure is:
1. push "set point"
2. type new value in Kelvin (e.g. 100K for start of heating)
3. press "enter" to apply or "escape" to correct typo
4. monitor E1 pressure (should go up)

Overview page:
https://popps.org/cgi-bin/jet.py?gasart=Wasserstoff

350

Tue May 18 21:08:16 2021

Beam stacking. 3 pulses, stochastically cooled and stacked on an inner orbit

349

Tue May 18 11:22:57 2021

run0049 - calib all Xray det.

Efficiency calibration in ESR

************************************
GEM1800 @ 90deg (xray1)
GEM3000 @ 35deg (xray2)
GLP2000 @ 145deg (xray3)
************************************


Detector: all
Source @ 90deg: 210Pb
Source @ 35deg: 133Ba_hi
Source @ 145deg: 241Am_hi
Distance: each
Start time: 11:22:36 - 18.05.2021
Stop time:  13:36:55 - 18.05.2021

file name: e127b_run0049.lmd
avrg. rate: 400Hz
dead-time:  3%

348

Tue May 18 01:21:27 2021

Tue May 18 01:03:59 2021

run0048 - calib all Xray det.

Efficiency calibration in ESR

************************************
GEM1800 @ 90deg (xray1)
GEM3000 @ 35deg (xray2)
GLP2000 @ 145deg (xray3)
************************************


Detector: all
Source @ 90deg: 210Pb
Source @ 35deg: 133Ba_hi
Source @ 145deg: 241Am_hi
Distance: each
Start time: 01:20:23 - 18.05.2021
Stop time:  11:05:30 - 18.05.2021

file name: e127b_run0048.lmd
avrg. rate: 400Hz
dead-time:  3%

346

Sun May 16 13:31:49 2021

Laszlo

DAQ

Cabling Documentation

Si HV and current was switched in the last documentation.

345

Sun May 16 12:55:48 2021

event server lxg1299:6003

DAQ

new event server is set up at lxg1299 on port 6003
It runs as:
/data.local1/gstore/mrevserv64 lxg1275

344

Sun May 16 11:54:12 2021

Xray performance in lab

These are the current Xray detector performances in the lab using data from run0046

det	DAQ ch	threshold	resolution @ 60keV
GEM1800	xray1	5keV	495eV
GLP2000	xray2	5keV	430eV
GEM3000	xray3	7keV	525eV

343

Sun May 16 11:25:25 2021

run0046 - Xray E-calib 241Am all dets

Detectors: Xray1 (GEM1800), Xray2 (GLP), Xray3 (GEM3000)
Sources: different Am241 at each detector

Start time: 11:25:04 - 16.05.2021
Stop time:  11:29:45 - 16.05.2021

file name: e127b_run0046.lmd
avrg. rate: 6000Hz
dead-time:  30%

342

Sat May 15 20:21:59 2021

run0045 - Si pulser run

Detector: DSSD
Source: CAEN Detector Emulator

Start time: 20:24:14 - 15.05.2021
Stop time:  21:01:34 - 15.05.2021

file name: e127b_run0045.lmd
avrg. rate: 1000Hz
dead-time:  7.5%


Si bias test cycle:
0V > 50V/200uA > 100V/280uA > 150V/370uA > 120V/320uA > 90V/260uA > 60V/210uA > 30V/160uA > 0V
This cycle is run twice i the first 15 minutes and shall be used for calibration of the scaler channels.

Also ESR trafo is running with beam.

341

Fri May 14 13:58:52 2021

run0044 - Xray145 calib 210Pb d=305mm

Efficiency calibration in the lab

************************************
CAUTION! 
This is now GEM1800 @ 145deg distance
But still operated as Xray1 in DAQ
************************************

90deg TFA diff set from 50 to 200.
Also threshold is slightly increased.

Detector: GEM1800 - 145 deg
Source: 210Pb
Distance: 305mm
Start time: 13:58:33 - 14.05.2021
Stop time:  16:46:00 - 14.05.2021

file name: e127b_run0044.lmd
avrg. rate: 40Hz
dead-time:  0%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.

340

Fri May 14 11:17:48 2021

run0043 - Xray145 calib 210Pb d=305mm

Efficiency calibration in the lab

************************************
CAUTION! 
This is now GEM1800 @ 145deg distance
But still operated as Xray1 in DAQ
************************************

Threshold slightly increased

Detector: GEM1800 - 145 deg
Source: 210Pb
Distance: 305mm
Start time: 11:17:23 - 14.05.2021
Stop time:  13:47:42 - 14.05.2021

file name: e127b_run0043.lmd
avrg. rate: 40Hz
dead-time:  0%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.

339

Fri May 14 10:28:49 2021

run0042 - Xray145 calib 241Am_hi d=305mm

Efficiency calibration in the lab

************************************
CAUTION! 
This is now GEM1800 @ 145deg distance
But still operated as Xray1 in DAQ
************************************

Threshold slightly increased

Detector: GEM1800 - 145 deg
Source: 241Am_hi
Distance: 305mm
Start time: 10:27:58 - 14.05.2021
Stop time:  11:14:03 - 14.05.2021

file name: e127b_run0042.lmd
avrg. rate: 200Hz
dead-time:  1.5%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.

338

Fri May 14 09:35:13 2021

run0041 - Xray145 calib Cd109 d=305mm

Efficiency calibration in the lab

************************************
CAUTION! 
This is now GEM1800 @ 145deg distance
But still operated as Xray1 in DAQ
************************************

Threshold slightly increased

Detector: GEM1800 - 145 deg
Source: 109Cd
Distance: 305mm
Start time: 09:34:52 - 14.05.2021
Stop time:  09:47:42 - 14.05.2021

file name: e127b_run0041.lmd
avrg. rate: 600Hz
dead-time:  5%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.

337

Fri May 14 09:06:55 2021

run0040 - Xray145 calib Ba133_hi d=305mm