| ID |
Date |
Author |
Category |
Subject |
Year |
|
26
|
Wed Oct 23 15:35:29 2019 |
Jan | DAQ | DAQ with & without MDPP-16 | |
the DAQ located in
../esrdaq_2018/r4l-58_dev/
currently includes
2x MADC
2x Caen V775 TDC
2x Caen V830 Scaler
> The DAQ located in
>
> ../esrdaq_2018/r4l-58/
> currently includes the readout of
> MADC
> Caen 775 TDC
> Caen 830 Scaler
> MDPP-16
>
> ../esrdaq_2018/r4l-58_rewind/
> is without the MDPP-16:
> MADC
> Caen 775 TDC
> Caen 830 Scaler |
|
27
|
Fri Oct 25 16:34:51 2019 |
Jan | Runs | prerun007 - MixedAlpha | |
save point: lxg1275:/datalocal1/e127/predata/prerun007
start: Fr 25.10.19 - 16:35
stopp:
DAQ setup:
64 ADC channels
ch. 01-64 (ADC0) >> empty
ch. 33-48 (ADC1 - section0) >> x-strips
ch. 49-64 (ADC1 - section1) >> y-strips
32 TDC channels
ch. 01-64 (TDC0) >> empty
ch. 33-48 (TDC1 - section0) >> x-strips
ch. 49-64 (TDC1 - section1) >> y-strips
64 scaler channels
(not used)
Detector setup:
bias -30V
MixedAlpha source in center |
|
28
|
Wed Nov 6 14:13:53 2019 |
Jan, Laszlo | Detectors | DSSSD - 1st movement - realignment | |
We moved the new detector installation for the first time slowly into the dipole chamber.
The alignement seems to be pefect, no distortion or vertical movement of the detector-arm was observed from the window flange.
The vacuum on the detector side went up from 2e-10 mbar to about 5e-9 mbar.
On the ring side it was 3e-11 mbar befor and 1e-10 mbar after movement.
The extreme positions possible (Endlage) are:
max out: -10613
max in: -7
These are the absolute positions in units of 0.1 mm
It has to be noted that after bakeout a realignment of the detector was needed in order to have it centered in vertical dimension. However, this realignment has been only slight turns of the base flange alignment screws. In detail, the two inner "Sechskantschrauben" below the bellow have been loosed slightly, while the outer two have been tightend. Additionally, the small "Madenschraube" on the outside has been loosend by 1/4 turn.
In result the detector could be raised in vertical position by about ~5mm (jugded by eye).
The effect of small turning on the screws is extreme on the detector position! Be careful when re-adjusting. |
|
29
|
Fri Nov 15 10:46:12 2019 |
Laszlo | Detectors | Detector movement from HKR | |
To move the detector remotely from the HKR:
-go to a desktop of a HKR computer
-right click: "App Launcher PRO"
(-you have to give some password at this point?)
-within the program go to "Development->ProHelper"
-write the name of our slow control unit in the field Nomen: "GE01DD4AS"
-There are 4rows, the middle two called: "Read props", "Write props"
-In "Read props" open "rposiabss" -> if you hit here the refresh button it will show only the SET position
-In "Read props" open "rposiabsi" -> if you hit here the refresh button it will show the REAL-TIME position of the detector
-In "Write props" open "wposiabss" -> here you can set the absolute position of our detector (one click is already enough to execute the command).
most OUT of the ring position: -10613 [0.1mm] in absolute
most IN into the ring position: -7 [0.1mm] in absolute
The value can have as big step size as we want contrary to relative movement, when you are limited to something like 20cm.
To close the program just simply hit the "x" buttons. |
| Attachment 1: IMG_20191114_135600.jpg
|
|
|
30
|
Thu Dec 5 10:57:57 2019 |
Jan, Laszlo | Detectors | setting up the DSSD with beam | |
This is a brief how-to about getting the DSSSD set up with stored beam and target in the ESR.
The main goals
1. adjust timing signals to TDC-range
2. adjust energy signals to ADC-range
3. optimize energy resolution
The signal chain is the following:
det [32ch.] > preamp [2x16ch] > 2x MSCF shapers [16ch] |
|
31
|
Thu Jan 23 16:35:47 2020 |
Laszlo | DAQ | cable documentation | |
|
| Attachment 1: cable_documentation_e127.pdf
|
|
| Attachment 2: cable_documentation_e127.ods
|
|
32
|
Tue Feb 11 13:20:01 2020 |
Jan | Detectors | BaF2 - HV settings | |
with these HV values the 6 channels are roughly gain matched, such that the 7.83 MeV Po-decay is around channel 5000. |
| Attachment 1: BaF2_HV_settings.png
|
|
| Attachment 2: baf_bg_ch1.png
|
|
|
33
|
Mon Feb 17 08:14:44 2020 |
Jan | Simulations | 118Te K-REC X-ray energies | |
X-ray energies of K-REC for 118Te according to
http://www-ap.gsi.de/Thomas/ap_html_research/energy/index.php
|
parameters | 35 deg | 90 deg | 145 deg
| |
8 MeV/u | 47.29 keV | 42.25 keV | 38.17 keV
| |
5 MeV/u | 44.51 keV | 40.74 keV | 37.57 keV
|
Full results are attached |
| Attachment 1: Photonen_Kammer.png
|
|
| Attachment 2: x-ray_calculator.txt
|
##################
8 MeV/U - 90 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 90.
EKIN(MeV/U)....................:= 8.
KINETIC ELECTRON ENERGY (keV)..:= 4.38864217
V (A.U.).......................:= 17.8451164
BETA...........................:= 0.130222112
GAMMA..........................:= 1.00858828
DOPPLER SHIFT..................:= 0.991491303
SOLID ANGLE TR LAB/CM..........:= 0.983055003
EMISSION ANGLE IN EMITTER-FRAME:= 97.4826901
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.117769298
ETA..(ENERGY)..................:= 0.114827573
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 28.6913397
K-BETA (LAB.).................:= 33.8248391
L-ALPHA (LAB.).................:= 5.13349949
KINETIC ELEC. ENERGY (LAB.)....:= 4.35130054
E K-REC (LAB)..................:= 42.2454911
E L-REC (LAB)..................:= 13.5541514
E M-REC (LAB)..................:= 8.42065194
##################
8 MeV/U - 35 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 35.
EKIN(MeV/U)....................:= 8.
KINETIC ELECTRON ENERGY (keV)..:= 4.38864217
V (A.U.).......................:= 17.8451164
BETA...........................:= 0.130222112
GAMMA..........................:= 1.00858828
DOPPLER SHIFT..................:= 1.10987917
SOLID ANGLE TR LAB/CM..........:= 1.23183176
EMISSION ANGLE IN EMITTER-FRAME:= 39.5387398
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.117769298
ETA..(ENERGY)..................:= 0.114827573
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 32.1171956
K-BETA (LAB.).................:= 37.8636547
L-ALPHA (LAB.).................:= 5.74645901
KINETIC ELEC. ENERGY (LAB.)....:= 4.87086251
E K-REC (LAB)..................:= 47.2897647
E L-REC (LAB)..................:= 15.1725691
E M-REC (LAB)..................:= 9.42611007
##################
8 MeV/U - 145 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 145.
EKIN(MeV/U)....................:= 8.
KINETIC ELECTRON ENERGY (keV)..:= 4.38864217
V (A.U.).......................:= 17.8451164
BETA...........................:= 0.130222112
GAMMA..........................:= 1.00858828
DOPPLER SHIFT..................:= 0.895920831
SOLID ANGLE TR LAB/CM..........:= 0.802674136
EMISSION ANGLE IN EMITTER-FRAME:= 149.078236
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.117769298
ETA..(ENERGY)..................:= 0.114827573
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 25.9257634
K-BETA (LAB.).................:= 30.5644416
L-ALPHA (LAB.).................:= 4.63867824
KINETIC ELEC. ENERGY (LAB.)....:= 3.93187594
E K-REC (LAB)..................:= 38.1734216
E L-REC (LAB)..................:= 12.2476582
E M-REC (LAB)..................:= 7.60898
##################
5 MeV/U - 90 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 90.
EKIN(MeV/U)....................:= 5.
KINETIC ELECTRON ENERGY (keV)..:= 2.74290135
V (A.U.).......................:= 14.1416452
BETA...........................:= 0.103196576
GAMMA..........................:= 1.00536768
DOPPLER SHIFT..................:= 0.994666113
SOLID ANGLE TR LAB/CM..........:= 0.989360677
EMISSION ANGLE IN EMITTER-FRAME:= 95.9234773
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.0739593675
ETA..(ENERGY)..................:= 0.0717672332
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 28.7832109
K-BETA (LAB.).................:= 33.9331482
L-ALPHA (LAB.).................:= 5.14993724
KINETIC ELEC. ENERGY (LAB.)....:= 2.72827103
E K-REC (LAB)..................:= 40.7438009
E L-REC (LAB)..................:= 11.96059
E M-REC (LAB)..................:= 6.81065272
##################
5 MeV/U - 35 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 35.
EKIN(MeV/U)....................:= 5.
KINETIC ELECTRON ENERGY (keV)..:= 2.74290135
V (A.U.).......................:= 14.1416452
BETA...........................:= 0.103196576
GAMMA..........................:= 1.00536768
DOPPLER SHIFT..................:= 1.08650883
SOLID ANGLE TR LAB/CM..........:= 1.18050143
EMISSION ANGLE IN EMITTER-FRAME:= 38.5498499
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.0739593675
ETA..(ENERGY)..................:= 0.0717672332
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 31.440915
K-BETA (LAB.).................:= 37.0663729
L-ALPHA (LAB.).................:= 5.62545782
KINETIC ELEC. ENERGY (LAB.)....:= 2.98018653
E K-REC (LAB)..................:= 44.5058887
E L-REC (LAB)..................:= 13.0649737
E M-REC (LAB)..................:= 7.43951584
##################
5 MeV/U - 145 deg
******************* KINEMATICS ****** *****************
ZPROJ..........................:= 52.
THETA..........................:= 145.
EKIN(MeV/U)....................:= 5.
KINETIC ELECTRON ENERGY (keV)..:= 2.74290135
V (A.U.).......................:= 14.1416452
BETA...........................:= 0.103196576
GAMMA..........................:= 1.00536768
DOPPLER SHIFT..................:= 0.917136431
SOLID ANGLE TR LAB/CM..........:= 0.841139233
EMISSION ANGLE IN EMITTER-FRAME:= 148.261832
******************* ENERGIES IN KEV ****** ************
ETA...(v/Zp)^2.................:= 0.0739593675
ETA..(ENERGY)..................:= 0.0717672332
EK(BIND).......................:= 38.2193878
EL(BIND).......................:= 9.28182715
EM(BIND).......................:= 4.10427342
K-ALPHA (LAB.).................:= 26.5396911
K-BETA (LAB.).................:= 31.2882142
L-ALPHA (LAB.).................:= 4.74852314
KINETIC ELEC. ENERGY (LAB.)....:= 2.51561476
E K-REC (LAB)..................:= 37.5680076
E L-REC (LAB)..................:= 11.0283166
E M-REC (LAB)..................:= 6.27979344
|
|
34
|
Fri Feb 21 09:39:40 2020 |
Laszlo | DAQ | cable documentation | |
|
| Attachment 1: cable_documentation_e127.pdf
|
|
| Attachment 2: cable_documentation_e127.ods
|
|
35
|
Fri Feb 21 11:29:02 2020 |
Laszlo | General | Shift plan | |
https://docs.google.com/spreadsheets/d/14m8WcCq1erx6HqWJRK7TLbCx121IkjqGa5l-frf4YjI/edit#gid=0 |
|
36
|
Fri Feb 21 11:29:59 2020 |
Jan | Detectors | det. distances at target chamber | |
This is the lookup table for the distance of each x-ray detector to the target.
See attched foto for explanation.
|
Detector | A (dA) [mm] | B (dB) [mm] | C (dC) [mm] | calculate | result [mm]
| |
35° | 136.0 (1.0) | 20.0 (0.2) | 450.0 (0.5) | C + B - A | 334.0 (?)
| |
90° | 76.0 (0.5) | 20.0 (0.2) | 447.0/2 = 223.5 (1.0) | C + B - A | 167.5 (?)
| |
145° | 165.0 (1.0) | 20.0 (0.2) | 450.0 (0.5) | C + B - A | 305.0 (?)
|
Errors are estimated after measurement, final errorbars have to be double checked! |
| Attachment 1: Photonen_Kammer.png
|
|
|
37
|
Tue Mar 10 08:52:34 2020 |
Jan | Detectors | DSSSD positioning | |
To find a good Si position, we need to follow a procedure similar to this:
1. Si in max-in position
2. find distance of beam by scraping with detector from inside
--> zero position
3. from this zero, we need to set a distance of about 1.5 cm to the inside (as shown in the sketch below)
It is likely that this position is not compatible with the complete ESR cycle (e.g. we scrape beam with det. during deceleration).
The solution is to move the beam closer to the detector after deceleration. There are two feasible methods to do this:
A. make a local bump in the dipole
--> check new zero and det. position again, as sketched above
--> in 2016 this method didn't allow to go close enough to the detector, eventually we used:
B. global orbit change (by magnet ramp) + target bump (to keep overlap)
--> this takes a bit more time to set up and also the cycle will be longer at low energies (critical due to life-time)
--> method A is preferred, but might not be strong enough
This needs to be checked and repeated for each new beam setting. |
| Attachment 1: optimum_detector_position_2.jpg
|
|
|
38
|
Tue Mar 10 09:41:26 2020 |
Jan | Detectors | x-ray background from BaF | |
The BaF2 detectors planned to be installed at the target induce an additional background in the x-ray detectors sitting below inside the target chamber.
We made test measurements with an x-ray detector for estimating the background in the region of interest for our K-REC measurements (35 to 50 keV).
For the interval [35-50 keV]:
Normal background level: 0.065 (s*keV)^-1
BaF2 in 5cm distance: 0.078 (s*keV)^-1
This is an increase by about 22%
Assuming an increase by 100% induced by 6 BaF2 in the vincinity of the Ge-detectors this seems acceptable.
However additional BaF-induced peaks are also visible at ~30 keV and ~60 keV. While these are not in the region of interest for the K-REC, we need to be aware of them!
spectra are available on the Frankfurt exp-astro Server at /home/glorius/e127/ |
|
39
|
Wed Mar 11 09:08:21 2020 |
Jan | DAQ | DAQ & controls - OVERVIEW | |
For all DAQ & slow control buissines the user
litv-exp
is used with the password ViValasVegas1964
Here is a list of computers and devices we use for the current DAQ:
- r4l-58 - VME cpu (RIO)
our DAQ runs on this computer
access from lxg1275 via ssh litv-exp@r4l-58
the current DAQ directory is /esr/usr/litv-exp/2020_e127/r4l-58
from lxg-machines the DAQ dir can also be accessed via the mount point at /lynx/Lynx/esr/usr/litv-exp/2020_e127/r4l-58
- lxg1275 - main DAQ handler
used for communication with the DAQ and primary data writing/streaming
access from any lxg via ssh litv-exp@lxg1275
primary data folder: /data.local3/e127/lmd/
local backup folder: /data.local2/e127/lmd_backup/
- lxg1299 - online monitoring
used for the R3Broot online monitor server
access from any lxg via ssh litv-exp@lxg1299
online data: /data.local3/e127/online/
- atpnu004 - slow control
used for remote access to SpecAmps (MesyTec Shapers), Si-HV (caen) and picoscopes
access from any lxg via E127_nuc or ssh litv-exp@atpnuc004
screen sessions: mesy_ioc (shapers), caen_ioc (Si HV)
access screens by screen -x mesy_ioc or screen -x caen_ioc (exit with [Ctrl-a d])
access vnc session for picoscopes on any lxg: E127_vnc or vncviewer atpnuc004:1
- apraspi001 - slow control 2
used for remote access to the BaF HV crate
access from any lxg via ssh litv-exp@apraspi001
local access to HV control by telnet: telnet 169.254.93.160 1527
- lxg0188 - 1st backup node
used for direct backup of the written data (invoked automatically by stopping a run)
backup dir: /data.local2/E127_lmd/
- kronos.hpc.gsi.de - 2nd backup node
used for secondary backup of lmd-data on lxg0188 (chronjob every 4 hours)
backup dir: /lustre/ap/litv-exp/2020-03-17_E127_jglorius
List of commands and aliases
- E127_daq or /data.local1/e127/scripts/E127_start_gui.sh
this is the GUI to control the DAQ
available on lxg1275 only with litv-exp user
only one instance of this GUI can run at the same time!
- E127_unpack or /u/litv-exp/unpacker/unpackexps/e127/e127
this is the unpacker for the current DAQ
available on any lxg with litv-exp user
to unpack lmd-files to root-file: E127_unpack infile01.lmd infile02.lmd --ntuple=RAW,outfile.root
- E127_epics or epicsfind; medm -x /u/litv-exp/e127/medm/e127.adl
this is the GUI for slow control of Si HV and amplifiers (MesyTec Shapers)
available on any lxg with litv-exp user
- E127_rates or /u/litv-exp/e127/UDP/build_cc_x86_64-linux-gnu_4.9.2_debug/udp_reader --trig --rate
this is the UDP reader for detector and trigger rates
available on lxg1275 only with litv-exp user
|
|
40
|
Wed Mar 11 14:33:44 2020 |
Laszlo | General | beam time manual | |
Here you can find the digital version of the E127 beam time manual. |
| Attachment 1: E127_experimental_manual.pdf
|
|
| Attachment 2: manual.odt
|
|
41
|
Sun Mar 15 09:42:40 2020 |
Jan | Calibration | run030 - Xray90 calib Am241 | |
measurement with old tennelec specAmps, do not use for efficiency!
Detector: 90
Source: Am-241
Distance: 167.5mm
Start time: 13:06:55 15.03.2020
Stop time: 13:24:57 15.03.2020
file name: run030_xxxx.lmd
avrg. rate: 650Hz
dead-time: 7% |
|
42
|
Sun Mar 15 13:08:38 2020 |
Jan | Calibration | run031 - Xray90 calib Ba133 hi-rate | |
measurement with old tennelec specAmps, do not use for efficiency!
Detector: 90
Source: Ba-133 strong source
Distance: 167.5mm
Start time: 13:28:42 15.03.2020
Stop time:13:38:16 15.03.2020
file name: run031_xxxx.lmd
avrg. rate: 2.7kHz
dead-time: 25% |
|
43
|
Sun Mar 15 13:40:11 2020 |
Jan | Calibration | run032 - Xray90 calib Ba133 | |
measurement with old tennelec specAmps, do not use for efficiency!
Detector: 90
Source: Ba-133 weak source
Distance: 167.5mm
Start time: 13:39:30 15.03.2020
Stop time: 13:50:55 15.03.2020
file name: run032_xxxx.lmd
avrg. rate: 150Hz
dead-time: 1.5% |
|
44
|
Sun Mar 15 13:52:05 2020 |
Jan | Calibration | run033 - Xray145 calib Am241 | |
measurement with old tennelec specAmps, do not use for efficiency!
Detector: 145
Source: Am-241
Distance: 305mm
Start time: 14:15;56 15.03.2020
Stop time: 14:40:21 15.03.2020
file name: run033_xxxx.lmd
avrg. rate: 300Hz
dead-time: 4% |
|
45
|
Sun Mar 15 14:41:34 2020 |
Jan | Calibration | run034 - Xray145 calib B133 high rate -SOURCE MOVED! | |
measurement with old tennelec specAmps, do not use for efficiency!
The source moved during the calibration, measurement stopped at half time.
Detector: 145
Source: B133 high rate
Distance: 305mm
Start time: 14:54:47 15.03.2020
Stop time: 15:06:53 15.03.2020
file name: run034_xxxx.lmd
avrg. rate: 1kHz
dead-time: 11% |