Fixed, e768s, Sun Jul 21 22:40:23 2019, Kseniia & Nicolas, BEAM, General, N/A, beam check run121 
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| best intensity ever: 2.2e7 pps |
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Fixed, e768s, Mon Jul 22 00:13:08 2019, Faïrouz & Sylvain, RUN, General, LiF, Screenshots run 121 @00h13 22x
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Fixed, e768s, Mon Jul 22 02:07:44 2019, Faïrouz & Sylvain, BEAM, General, LiF, Run 121 : Beam profile
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| Status at 2:05 AM |
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Fixed, e768s, Mon Jul 22 04:15:53 2019, Faïrouz & Sylvain, RUN, General, LiF, Beam intensity & profile & scalers
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Fixed, e768s, Mon Jul 22 05:03:59 2019, Faïrouz & Sylvain, RUN, General, LiF, Screenshots run 121 @05h04 21x
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Fixed, e768s, Mon Jul 22 05:12:13 2019, OttoRun, RUN, General, LiF, Run122
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[SIZE=3][B]Run : 122[/B][/SIZE]
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Fixed, e768s, Mon Jul 22 05:16:22 2019, Faïrouz & Sylvain, RUN, General, LiF, Stop run 121 because problems of AGATA trigger validation
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| The run 121 has to be stopped because problems of AGATA trigger validation due to very high request rate of AGATA >=85K |
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Fixed, e768s, Mon Jul 22 05:19:36 2019, Faïrouz & Sylvain, RUN, General, LiF, Start new run 122
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Start new run 122. AGATA validation was recovered.
BUT the AGATA request rate is increasing very quickly!!! The OR-AGATA increased up to ~32000.
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Fixed, e768s, Mon Jul 22 05:30:37 2019, Faïrouz & Sylvain, RUN, General, LiF, CF put because AGATA went crazy
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CF put because AGATA went crazy.
The beam profile is shifted in comparison to the initial profile at midnight. The beam is touching somewhere.
We asked the beam operators to try to center the beam. |
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Fixed, e768s, Mon Jul 22 06:14:38 2019, Faïrouz & Sylvain, RUN, General, LiF, Run 122 with more centered beam profile
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Even with a more centered beam profile, AGATA request triggers is increasing too much and too fast!!! after 5 mn run, we are already at 100khz!!!
Need Bertrand to solve the situation. |
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Fixed, e768s, Mon Jul 22 06:32:40 2019, Faïrouz & Sylvain, RUN, General, LiF, We put the Faraday cup because AGATA can not cope with the very high counting rate (>110kHz)
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We will call Emmanuel & Bertrand.
We stopped the run 122, waiting for Bertrand to come and work on the beam size and focalization. |
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Fixed, e768s, Mon Jul 22 07:48:03 2019, OttoRun, RUN, General, LiF, Run123
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[SIZE=3][B]Run : 123[/B][/SIZE]
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Fixed, e768s, Mon Jul 22 08:23:02 2019, Christian - Bertrand, Sylvain, Frank, Francois, BEAM, General, LiF, Beam adjustment notes
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Adjustment of beam position, moved up by approximately 15mm on VAMOS FP, down by 2mm on target. AGATA rate reduced to normal, about 4k after 5 min equilibration,
no substantial satellite seen in direct beam on VAMOS FP. See separate entry for detailed discussion. Note, however that while beam intensity measurement
is 2.1e7, VAMOS trigger on reaction setting is approximately 1100. |
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Fixed, e768s, Mon Jul 22 08:26:07 2019, OttoRun, RUN, General, LiF, Run124
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[SIZE=3][B]Run : 124[/B][/SIZE]
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Fixed, e768s, Mon Jul 22 08:28:00 2019, mugast, OTHER, General, LiF, Scalers at start of run124
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Fixed, e768s, Mon Jul 22 08:29:19 2019, Faïrouz, Sylvain, Francois et Franck, Bertrand, BEAM, General, LiF, Beam profile updated
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To solve the very high counting rate observed on AGATA (and on MUST2 with a lesser degree), the beam was retuned.
After inspection of the beam profile in VAMOS, Bertrand tuned the vertical steerers G1.DC21-VE (from 0.5 -> 0.0A). The consequence is a shift of 2mm in |
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Fixed, e768s, Mon Jul 22 09:40:06 2019, Franck, François, Adrien, Jérémy, Nicolas, ONLINE, General, LiF, Screenshots run 124 22x
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Fixed, e768s, Mon Jul 22 10:01:12 2019, Franck, François D, BEAM, General, LiF, Beam profile
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Slight shift in vertical +1 mm (with respect to this morning at 8:30)?
Intensity = 1.7e7 pps |
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Fixed, e768s, Mon Jul 22 10:10:02 2019, Christian, OTHER, General, , Previous Papers - alpha-branching ratios for states in the 4-MeV region
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Branching ratio data overview from Tan et al. (PRL 2007, attached):
Ex/MeV B_alpha
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Fixed, e768s, Mon Jul 22 11:16:09 2019, OttoRun, RUN, General, LiF, Run125
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[SIZE=3][B]Run : 125[/B][/SIZE]
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