Entered by Sophie Chance from 134.158.195.141 on Thu Mar 4 17:07:19 2021; Tests IHM RF
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Les tests se sont bien déroulés, on observe bien les signaux correspondants au redpitayas demandés.
Il faudra faire une modification sur l'IHM car tango bloque par moment et cela "freeze" l'IHM que l'on doit complètement
redémarrer. |
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CB/SC; liste des actions à menées
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HM MO; redemarrage 17 aout 2022
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9h30 redemarrage HM MO
- niveau 1 verifié (circuit eau, air comprimé, etat modulateur et SF6)
- ronde modulateur faite |
MO HM; test RF modulateur longue durée (journée) 
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but : test fonctionnement modulateur et RF sur la journée
8h55 démarrage modulateur et refroidissement
10h00 démarrage RF ( HV=1090V ) |
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MO; démarrage
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| 8h35 mise sous tension: PSS, LB9000, modulateur, chillers |
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IC, VK, VI, VC, JH, HG, ND; Summary of the ring commissioning meeting #1
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Status slides presented by Iryna available on indico at https://indico.ijclab.in2p3.fr/event/8749/
The beam parameters required for a good injection in the ring were discussed.
The following required parameters were identified: |
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IC, VK, VI, VC, JH, HG, ND ; Ring objectives
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This entry is to be updated as the work progresses.
1) Re-establish beam transport to ring
2) Scan in time the septum |
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IC, VK, AM, VC, ND; Beam requirements for the ring
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The following parameters are required for ring operations:
- At least 50pC on TL/DG/ICT.01 with std <20pC
- At least 20pC on TL/DG/ICT.02 with std <20pC |
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VK, IC, AM, ND; Summary of the ring commissioning meeting #2
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Slides are at https://indico.ijclab.in2p3.fr/event/8750/
- There is a difference in BPM numbering in Tango and MML => we should stick to Tango names.
- Beam was very unstable during the past week |
IC, VK, VI, VC, JH, HG, ND ; RE: Ring objectives
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(1), (2), (4) and (5) from last week have been done other items in progress.
New to do list:
(0) Re-establish beam transport to ring |
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ND; RE: Beam requirements for the ring
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An IHM to check some of these parameters has been created (git/panneaux/StatusInfoIHM_ring_vars.py) and added to Plateforme_IHM...
Quote:
The following parameters are required for ring operations: |
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ND, IC; Steerers and BPM map for the ring
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| See attached files. |
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IC, VK, VI (ND); Summary of the ring commissioning meeting #3
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Shift summaries for the ring for last week are at
https://elog.lal.in2p3.fr/THOMX/Commissionning/568
https://elog.lal.in2p3.fr/THOMX/Commissionning/570
https://elog.lal.in2p3.fr/THOMX/Commissionning/571
The
problem with the pulse jumpis with 12ns delays has been identified and fixed (it was related to the synchronisation system).
The main issue identified |
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IC, VK, VI, VC, JH, HG, ND ; RE: RE: Ring objectives
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New to do list:
(0) Re-establish beam transport to ring
(0bis) Check energy jitter in TL/BPM.02 and TL/SST.02 |
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VK, IC, VI, JH, ND; Summary of the ring commissioning meeting #4
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- 300 turns achieved.
- Probably more but limited by libera cut-off frequency.
- Need to measure the injection axis |
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IC, VK, VI, VC, JH, HG, ND ; RE: RE: RE: Ring objectives
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To do list:
(0) Re-establish beam transport to ring
(0bis) Check energy jitter in TL/BPM.02 and TL/SST.02 |
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VK, IC, VI, JH, SC, ND; Summary of the ring commissioning meeting #5
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See slides attached to the indico page https://indico.ijclab.in2p3.fr/event/8885/
Pb with BPM => visual check of electrodes + hardware swap
Pb with steerer => Need to identify who will do the intervention and when |
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VK, IC, VM, JH, ND; Summary of the ring commissioning meeting
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Discussed recent orbit correction of the expanded orbit.
Need to make run with cavity detuning from its resonant conditions
used in the conditioning.
Discussed measurement of tune, and possible origins of inconsistant/noisy measurements.
Either BPMs signal processing or weak excitation. Beam size?
Need to do measurements with scope, to see if we can interpret TbT |
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VK, IC, VM, JH, KD, ND; Summary of the ring commissioning meeting
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The ring orbit has been re-established despite some difficulties after the shutdown.
The ring cavity has been started. Whatever the phase it kills the beam.
Two hypothesis: |
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CB/HG/SC/KD; Programme linac semaine 5 décembre
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Lundi 5 décembre : redémarrage technique
Pb refroidissement Pb réglé le mercredi matin concomitance (anneau/linac), sensible à la pression qui est dans
le réseau primaire, à surveiller |