 Sat Mar 21 06:02:22 2020, Tino, Oliver, General, Detector filling,
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| Run stopped for detector fillings |
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Sat Mar 21 10:20:27 2020, Ragan, Alex, General, Target LN2,
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| The LN2 Dewar on the ESR roof has been refilled. |
Sat Mar 21 11:30:04 2020, Laszlo, General, MWPC movement, 
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now we try to move the capture detector (MWPC in the 1. dipol before our Si setup) inside the ring while the DAQ was ON
we tried to move it as close as possible to the beam
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Sat Mar 21 12:02:57 2020, Ragan, Laszlo, General, run entry - run061,
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12:02 pm - scapper is taken out completely
open file : runstart061 |
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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. |
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Sat Mar 21 12:32:00 2020, Laszlo, General, Estimated target thickness,
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Target thickness must be like 5mm (was measured with a moving thin wire)
The beam thickness is small because of the low intensity
Maybe we hit the target a bit offset --> less rate?
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Sat Mar 21 12:42:21 2020, Ragan, General, Entry to ESR for MCP detector,
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Pierre Michel and Laszlo go inside the ESR for switching on the MCP detector so that the photons from the gas jet and secondary beam interaction can be
seen.
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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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Sat Mar 21 15:26:49 2020, Laszlo, General, SCRAPER is ON use again,
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| Yuri puts back the scraper (Egelhof 1 - GE01DD1IG) into position = +19. (where it was in the evening) |
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Sat Mar 21 15:30:34 2020, Sergiy, General, go into the ESR,
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We are going into the ESR to check the electronics.
Use calibration sources (133Ba etc). |
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Sat Mar 21 17:21:57 2020, Laszlo, General, new Target density,
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Ulli and Nikos managed to set the target density to ~7E13 at 51K temperature
The cycle is checked again, it seems fine. |
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Sat Mar 21 17:34:10 2020, Sergiy, General, Recoils,
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We started recording the data from the recoils using the MCP from Pierre-Michael's experiment.
17:30 File opened: recoils1662.lmd.
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Sat Mar 21 18:13:22 2020, Shahab, General, rough comparison gas target off and on,
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| rough comparison of life time at 10 MeV/u when target off with on. more noise in background means weaker signal. |
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Sat Mar 21 23:07:00 2020, Laszlo, General, 1672. MCP file was (recoils) was not closed,
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1672. MCP file was (recoils) was not closed when we refilled the Xrays and did the cable change of 90 and 145 xrays
These stored in lxg1299 local disk |
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Sun Mar 22 10:05:37 2020, Esther, Ragan, General, run entry - run079,
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| The intensity of beam from SIS is less due to some issues with UNILAc. |
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Sun Mar 22 10:28:27 2020, Esther, Ragan, General, run entry - run079,
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| The problem at UNILAC seems to have solved itself. Intensity is returning to normal. |
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Sun Mar 22 12:01:44 2020, Esther, Ragan, General, Vacuum problem with SIS,
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| There is some problem with the vacuum in SIS and thus data recording is stopped. |
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Sun Mar 22 12:53:43 2020, Laszlo, General, quick summary for the 118Te overnight measurement,
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Quoting Yury:
"The count rate is very low. We estimate that we store about 10^4 118Te particles at 10 AMeV. This is a very low number.
On Saturday we re-implemented the recoil setup (MCP from Pierre-Michelle) from the previous experiment and could verify the overlap between the stored |
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Sun Mar 22 13:33:19 2020, Laszlo, General, 2nd storage of MCP data,
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I made a backup for the MCP data on my own GSI laptop. Looking for better solution...
the original "fresh" files stored at litv-exp@lxg1299:/data.local2/hillenbrand/Laszlo/ |
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Sun Mar 22 14:58:59 2020, Laszlo, General, dropping density of Gasjet,
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after like 20min run, the density of the gasjet already dropped from 10^14 to 8.7*10^13. Now it seems to remain in that value
Below in arbitrary units one can see the trend of the gas jet density starting from 10^14 to 8.7*10^13 |