 Tue Mar 10 09:41:26 2020, Jan, Detectors, x-ray background from BaF,
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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).
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Mon Mar 23 12:30:39 2020, laszlo, Analysis, with and without scraper, 
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Wed Mar 18 09:53:28 2020, Laszlo, Jan, General, vacuum after opening gate valve,
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Gate valve to DSSSD setup was opened on Tue 17.03. ~9:00
The vacuum on Wed 18.03. ~9:00 was
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Thu Apr 23 19:09:58 2020, Laszlo, Calibration, theoretical K-REC cross sections , 9x
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Find attached Andrey Surzhykov's calculations for the theta angle in respect to the beam direction (in lab. frame) vs. cross section for 124Xe54+ and 118Te52+.
The calculations made for collision with two H atoms with the accuracy of 1%. There are no molecular corrections done, but these corrections are within
1%.
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Sun Mar 15 17:13:21 2020, Laszlo, Jan, Calibration, the x-ray gate issue,
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We found a strange behaviour of our ADC gates for the x-ray detectors.
The setting as shown in the foto below corresponds to a delay of 5 us and a gate length of 15 us.
This is the only setting that produces nice spectra, even though the signals and gate are not aligned.
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Thu Apr 22 10:56:20 2021, Jan, Detectors, target-chamber det. distances, 2021
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This is the lookup table for the distance of each x-ray detector to the target.
See attached foto for explanation.
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Sat Mar 21 14:52:05 2020, Laszlo, General, target optimization,
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previous position of the beam at target was -3mm (for the night position)
max. intensity position of the beam at target 1s -1mm. --> now it is set to this position
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Fri Mar 20 01:21:00 2020, Laszlo, General, target is switched on event based,
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Sat Mar 21 21:36:06 2020, Jan, Runs, target incident,
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in run 66 or 67 we had a single ESR cycle for which the target didn't switch off for new injection and deceleration etc.
Very likely the DAQ also didn't get an OFF signal and collected OFF data to the TRIGGER=1 (ON data) branch.
As a consequence we collected about ~100 counts on the Si in one shot, which was about ~20 counts before this shot.
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Sun Mar 22 18:35:43 2020, Laszlo, , target dropped aagain,
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| there was a drop again from 8.6e13 to 7e13 in the target density |
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Fri May 21 10:00:51 2021, Jan, Accelerator, target bump, 2021
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The target overlap was optimized on xray and si rates.
The setting now is -10mm in SC9 |
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Sun Mar 22 17:45:07 2020, Laszlo, General, switching to primary beam,
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We have finished the measurement with the fragments.
Now Yury will setup up a primary beam through the FRS, but without target in FRS.
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Thu Mar 19 15:09:29 2020, Jan, General, starting off with DSSSD,
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here is my short guide how to start with the measurement as soon as we have a beam available.
0. ESR timing in DAQ (maybe Uwe can also assist here)
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Wed Sep 25 13:03:46 2019, Laszlo, Analysis, simulations on 118Te+p, 11x
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I have made some simulations at 8AMeV, 7AMeV and 4AMeV energies for the main 118Te + p reaction channels. For the
Rutherford simulations credits to Yuanming! For each energy there are 3 simulations: without the scraper, with the
scraper (online), scraper (online) + E-truncation (offline). The scraper is treated as an "ideal scraper" meaning
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Fri May 21 01:17:37 2021, Laszlo, Analysis, simple analysis code, 2021
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//a simple code (template) for offline analysis
//made by Laszlo, serves as a simple demonstration for enthusiastic shifters
//it creates a "no double counting Si 2D pos" histo
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Thu Dec 5 10:57:57 2019, Jan, Laszlo, Detectors, setting up the DSSD with beam,
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This is a brief how-to about getting the DSSSD set up with stored beam and target in the ESR.
The main goals
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Mon Mar 23 13:26:59 2020, Jan, Analysis, runs_90to99 SCRAPER RESULTS,
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With scraper, we have roughly 150-200 (p,g) counts now.
X-rays look fine! |
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Mon Mar 23 14:32:03 2020, Jan, Analysis, runs_100to104 NO-SCRAPER RESULTS,
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Without scraper, we have very few (p,g) counts, hard to get numbers quickly, maybe ~50.
X-rays look fine! |
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Fri Apr 5 05:46:20 2019, Jan, DAQ, running DRASI for (p,g),
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We now have a drasi DAQ running for our (p,g) experiments.
The RIO we have it installed right now is: r4l-58
It shall be used with the user <litv-exp>
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Sat Mar 21 12:06:50 2020, Laszlo, General, run61 - SCRAPER moved out,
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| we want to see any change on the Silicon count rate, because we will have now also Rutherford scattering. |