 Fri Mar 20 01:11:58 2020, Laszlo, General, Target - beam jntersection, 
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We have managed to find the target position with the beam by looking at the xray spectra. The trick was that at 10mev we
only have a low increase in the xray rates, so.we went for 400Mev/u where the rate change was dramatic (see in the
picture) |
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Fri Mar 20 01:21:00 2020, Laszlo, General, target is switched on event based,
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Fri Mar 20 01:22:23 2020, Shahab, Runs, Setting for Gas target,
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Setting for the machines. |
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Fri Mar 20 01:36:48 2020, Laszlo, General, 124Xe primary beam at 10Mev TargetON,
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We didmt see any effect on the lifetime if the target is switched on. It is because we use only hydrogen target (but why
is.it so?) |
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Fri Mar 20 04:29:45 2020, Jan, DAQ, DAQ settings for the first night,
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Fri Mar 20 04:32:22 2020, Shahab, Runs, run entry - run046,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 04:31 , first file: run046_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 04:31:44
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 33 Hz
Xray_145: 23 Hz
BaF_OR: 2463 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 2e6
Target ON density: 1.8e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 05:03:03 2020, Shahab, Runs, run entry - run046,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 04:31 , first file: run046_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 05:00
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 28 Hz
Xray_145: 24 Hz
BaF_OR: 2452 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 2e6
Target ON density: 1.8e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 05:32:44 2020, Shahab, Runs, run entry - run047,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 05:30 , first file: run047_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 05:30
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 27 Hz
Xray_145: 20 Hz
BaF_OR: 2379 Hz
Si voltage: 60.02 V
Si leakage current: 3.93 uA
SIS particles before: 2e9
ESR particles at injection: 5e7
ESR particles after decel.: 5e6
Target ON density: 1.97e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 06:00:26 2020, Shahab, Runs, run entry - run047,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 05:30 , first file: run047_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 06:00
ON Rates
Si_X: 1 Hz
Si_Y: 1 Hz
Xray_35: 3 Hz
Xray_90: 33 Hz
Xray_145: 23 Hz
BaF_OR: 2512 Hz
Si voltage: 60.02 V
Si leakage current: 3.94 uA
SIS particles before: 2e9
ESR particles at injection: 5.3e7
ESR particles after decel.: 5.8e6
Target ON density: 1.97e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 06:34:40 2020, Shahab, Runs, run entry - run048,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 06:33 , first file: run048_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 06:36
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 0 Hz
Xray_90: 39 Hz
Xray_145: 16 Hz
BaF_OR: 2590 Hz
Si voltage: 60.02 V
Si leakage current: 4.0 uA
SIS particles before: 2e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 5.2e6
Target ON density: 1.55e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 07:01:06 2020, Shahab, Runs, run entry - run048,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 06:33 , first file: run048_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 07:00
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 1 Hz
Xray_90: 39 Hz
Xray_145: 38 Hz
BaF_OR: 2498 Hz
Si voltage: 60.02 V
Si leakage current: 4.03 uA
SIS particles before: 2e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 5.4e6
Target ON density: 1.57e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 07:30:16 2020, Ragan, RuiJiu, Runs, run entry - run049,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 07:31 , first file: run049_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 07:30
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 0 Hz
Xray_90: 35 Hz
Xray_145: 23 Hz
BaF_OR: 2483 Hz
Si voltage: 60.02 V
Si leakage current: 4.02 uA
SIS particles before: 2.3e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 5.8e6
Target ON density: 1.35e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 08:01:40 2020, Ragan, RuiJiu, Runs, run entry - run049,
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beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 07:31 , first file: run049_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 08:00
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 33 Hz
Xray_145: 29 Hz
BaF_OR: 2673 Hz
Si voltage: 60.01 V
Si leakage current: 4.00 uA
SIS particles before: 2e9
ESR particles at injection: 5.7e7
ESR particles after decel.: 5.1e6
Target ON density: 1.5e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 08:30:52 2020, Ragan, RuiJiu, Runs, run entry - run049,
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There is no beam due to water leakage in the transfer channel of SIS.
Stop file: run049 at 8:29 am |
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Fri Mar 20 10:28:31 2020, Ragan, RuiJiu, Runs, run entry - run050,
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Beam is back at 10:27 am.
Open file: runstart050
beam: 124Xe54+
energy: 10 MeV/u
purpose: data with TARGET ON
Detector position (Si): -25 mm
run start at 10:27 , first file: run050_0001.lmd
run stop at xx:xx , last file: run0xx_0xxx.lmd
_______________________________________________________________________________
time: 10:30
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 35 Hz
Xray_145: 27 Hz
BaF_OR: 2441 Hz
Si voltage: 60.02 V
Si leakage current: 3.98 uA
SIS particles before: 2e9
ESR particles at injection: 5.8e7
ESR particles after decel.: 1.3e7
Target ON density: 1.38e13
copy and repeat the above (below the line) every 30 minutes |
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Fri Mar 20 11:00:25 2020, Ragan, RuiJiu, Runs, run entry - run050,
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Yuri and ESR team are optimising
the deceleration in ESR.
DSSSD detector is taken out at
10:55 am.
The HV for DSSD is switched off at
11:10 am as the detector was out
and the leak current was ~18 uA.
At 11:11 am, the file was closed.
File close: run050 stopped.
update by Laszlo: the increase of the leakage current is due to the fact that we have a vacuum measurement device next to the DSSSD when it is moved out. The phenomena is normal, the DSSSD is hit by electrons (or ions) coming from the vacuum measurement device. |
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Fri Mar 20 13:21:33 2020, Jan, Laszlo, Analysis, 124Xe data of first night,
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The unpacked data of all runs from the first night (46-50) is located at
litv-exp@lxg0188:/data.local2/E127_lmd/124Xe_1st_night.root
By taking a very quick look at the Silicon xy position histo, one can identify (please not the number of counts) clusters of hits. The x=0 and x=1 strips sees the forward scattering Rutherford particles, which remained even after scraping at 3.5cm away from the beam. This idea is supported by the simulations. Backscattered Rutherford components cannot be identified simply because of their low count rate (the exact rate should be double check). The second cluster in the middle of the detector must be our pg peak. For x>=7 strip we see the pn channel. It overlaps with the pg peak both in the position and in the energy. The energy vs Xstrip histo is NOT gainmatched, yet. Hard to make statements, but so far it seem to support the conclusions based on the position histo. The energies seem to corrsepond to the simulation: forward Rutherford, pg at same level; pn is a bit below ( ~.8% energy separation of the centers). The separation in the enregy for the backscattered Rutherford should be in the range of 2%. |
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Fri Mar 20 16:48:00 2020, Laszlo, General, flipped Si shaper output in x and y,
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Yesterday evening we have found out that the energy signals from the silicon are negative --> wrong polarity of the shapers was chosen while using the jumpers.
Cables coming from the preamp are switched now. --> in the recorded data the X and Y coordinates of the Si strip detector is the other way around!
Hopefully, the left and right side we can judge well... |
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Fri Mar 20 16:54:53 2020, Jan, DAQ, BaF OFF downscaled red=32,
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I introduced a downscaling by a factor of 2^5=32 for the BaF2 during target OFF.
The reason is, that we get a lot reasonable x-ray counts (K-alpha, K-REC) outside target ON phase.
So i want to minimize our deadtime during target OFF, to be able to use the data efficiently if needed.
BaF2 is not really needed in target OFF. |
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Fri Mar 20 16:58:02 2020, Jan, DAQ, Xray2 & Xray3 cabling,
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We found that Xray2 and Xray3 the cabling is not consistent:
90 degree detector
> E_Xray2 for energy
> t_Xray3 for times
145 degree detector
> E_Xray3 for energy
> t_Xray2 for timing
35 degree detector
> E_Xray1
> t_Xray1
We can run like this, but should be aware of it! |