 Tue Mar 23 08:39:11 2021, Martino Trassinelli, , Target triggers 
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Settings for the event triggers (on left - machine 6 event 32 / off right - machine 7 event 32) (first picture)
Unplug the black no 1 to twitch of target, but remaining the cycle and triggering of the camera (second picture). |
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Tue Mar 23 08:42:11 2021, Martino Trassinelli, Runs, Beam nominal set-up
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- 238U89+ at the energy of 30.16 MeV/u for the Li-like from excitation --> 1-3 days of beam time
- 238U91+ at the energy of 41.035 MeV/u for the He-like from capture --> 10 or more days of beam time |
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Wed Mar 24 22:45:37 2021, Martino Trassinelli, General, Accelerator cycle
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| Cycle at present |
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Wed Mar 24 22:48:09 2021, Martino Trassinelli, , Typical cycle
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| Typical cycle at present |
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Thu Mar 25 01:37:04 2021, Martino Trassinelli, Runs, Change in the gas-jet density
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We reduced the pressure of the gas-jet target at 0:45AM. Now it is about 7E11 (indicated as 7x10E11 in the webpage of the control).
Beam cycle: ~45 s
Target on: 2x5 = 10 s
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Thu Mar 25 08:59:50 2021, Martino Trassinelli, Runs, Summary of the last evening night
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Starting from about 23:40 we have a complete set-up with Ge detector and particle detector. Gas jet density about 1.1e12.
Between 23:40a and 00:10 the waiting time of the CCDs was too short --> additional noise in the CCDs.
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Thu Mar 25 11:42:14 2021, Martino Trassinelli, DAQ, TDC recalibration
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Check of the TDC spectrum:it is strange. Uwe and Jan recheck all the chain. Still strange behavior.
Meanwhile CCD acquisition continued with the folder data07 |
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Thu Mar 25 13:29:22 2021, Martino Trassinelli, DAQ, mbs acquisition restarted
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TDC changed and acquisition restarted.
We have now a 2D histogram time vs energy. We should have some clues to solve the mystery. |
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Thu Mar 25 19:20:24 2021, Martino Trassinelli, General, Switch to Be-like line
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Tuning the beam for the Be-like U from capture in Li-like U.
Energy setting up to 39.293 MeV/u. |
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Thu Mar 25 23:59:46 2021, Robert, Runs, Data run for Be-like
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We started a run with cooler energy set to 21715 V, corresponding to 21515 V with space charge correction for Be-like from capture.
The acquisition started at the lmd file n. 1100. |
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Fri Mar 26 07:26:48 2021, Robert, Runs, typical cycle for the be-like measurement
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Fri Mar 26 08:35:25 2021, Martino Trassinelli, Runs, End of the Be-like beam
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Problems from the high frequency in unilac. We stoped the acquisition at 6:50 corresponding to the lmd file n. 1184.
Once the beam back in the SIS, we have a bad injection in the ESR and nobody to adjust it. Because of the plan to go to new settings in the ESR, We stop
this beam period and we warm the target to be ready for the week end. |
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Fri Mar 26 09:10:02 2021, Martino Trassinelli, Analysis, Low energy Li-like beam TDC vs ADC from Ge detector
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Arrival time vs energy of the Xray from the Ge detector during the beam with Li-like U at 39 MeV/u. Prompt data are visible, due to the capture.
Excitation photons are on the right part only (early arrival time). On the left, due the feature of the multi trigger and the high count rate in the particle
detector, the data from capture and excitation are together.
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Fri Mar 26 20:42:31 2021, Robert, Analysis, image of the photons from the be-run
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| around 16 photons in the right energy range after ~5 h of integration. |
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Tue Mar 30 11:03:17 2021, Robert, Runs, data run for Li like
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We startet run on Tuesday 2 am with ~4E7 decellerated ions.
We get a count rate of ~40 cts per hour in the line.
Target density: ~1.5E12 part/cm2 |
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Tue Mar 30 11:24:51 2021, Martino, Runs, Typical good cycles for He-like beam
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Thu Apr 1 21:24:14 2021, Martino, Runs, H-like ion beam started for He-like
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Starting the acquisition for the He-like U with a H-like U beam at 41.035 MEV/u
Gas jet detector: 2.38E12 part/cm2
Decelerated ions: 4.5E7 ions
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Sat Apr 3 12:01:01 2021, Robert, Analysis, Line energies for Germanium detector
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Sat Apr 3 12:03:57 2021, Pierre-Michel, Analysis, X-ray spectrum
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| Live X-ray spectrum from U91+ at 41 MeV/u, accumulated within 35.6 h according to Go4. |
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Sun Apr 4 15:26:57 2021, Robert, Runs, stability of ion beam current during He-like run
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| graph starts covers the whole he-like run from Thursday evening to monday afternoon |