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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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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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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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 |
IC, VK, VM, SC, ND; Summary of the ring commissioning meeting 
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Notes from last week:
Beam was very unstable (probably energy instabilities), lot of time was spent tuning the injector.
Beam instabilities prevented
us from having a good storage.
Unable to start the extraction line dipole.
Comments: |
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VK, VM, SC, ND, HG; Summary of the ring commissioning meeting
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Summary of last week:
- On Thursday the beam energy was very different from usual (magnets current higher 172A for TL; 176A for RI) => made it impossible to re-use
previous settings for the ring and to find new settings. |
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VK,IC, SC, VM, ND; Summary of the ring commissioning meeting
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No beam last week. No beam this week.
Machine recovery on 2/2 => Nicolas may try to tune the machine with students.
Data taking on 9/2 for diags and machine characterization. |
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VM, VK, ND; Summary of the ring commissioning meeting
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This week: beam on Thursday.
So far we did not see any screenshot of Ring variables check.
Looking at last week's data, shot to shot charge instability seems to be > 15% |
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IC, VK, VM, JH, ND; Summary of the ring commissioning meeting
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- Went up to 100kV in the cavity once it was tuned.
- Achieved nice storage stable for 2500 turns and some beam for > 100ms
- Measured the tune: several peaks around 0.35[1] (near the expected value) and one peak not understood at 0.5 |
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ND; Réunion Physique ThomX
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Transparents sur: https://indico.ijclab.in2p3.fr/event/9358/
Quelques notes de la réunion de Physique de ThomX:
- Présentation de Marie sur les mesures dans le linac |
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IC, VK, VM, LS, JH, SC, ND; Summary of the ring commissioning meeting
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Report from last week:
- Attempted the strategy suggested by Alex
- Comparison of orbit with RF ON and RF OFF helped understand the "natural" frequency of the ring: 500.33MHz |
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VK, IC, LS, ND; Summary of the ring commissioning meeting
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Discussion mécanique
- Tous les dipoles ont été alignés par rapport à des surfaces de référence
- Le décalage du centre magnétique par rapport au centre mécanique a été mesuré par Cynthia et pris |
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Entered by Nicolas Delerue from 193.55.29.171 on Thu Dec 10 14:42:53 2020; Clients 1, 4 et 5 non fonctionnels
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En complément du message de Hayg, client 4 et 5 ne fonctionnent pas non plus (en plus de client 1).
Nicolas |
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Hayg; WC tests TANGO
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CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.03_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.01_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch3_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch4_chargeMean
Dans les variables MeanStd :
Charge 1 :
er_ca_rac.05-elr.01-wac.01_Ch0_chargeMean
Charge 2 :
er_ca_rac.05-elr.01-wac.02_Ch0_chargeMean
er_ca_rac.05-elr.01-wac.02_Ch3_chargeMean
er_ca_rac.05-elr.01-wac.02_Ch4_chargeMean
Charge |
Hayg; RE: WC tests TANGO
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Hayg
wrote:
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.03_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.01_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch0_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch3_chargeMean
CALC/DG/MeanStd_charge1/ER_CA_rac.05-elr.01-WAC.02_Ch4_chargeMean
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CB/SC; liste des actions à menées
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Entered by Sophie Chance from 134.158.195.143 on Thu Jul 16 09:50:21 2020; demarrage à blanc
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| debut du démarrage à blanc 9h45. Démarrage prévu par étape. |
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Entered by Hugues Monard from 134.158.195.145 on Wed Dec 9 14:26:20 2020; re-organisation PC-client en SdC
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suite à la discussion de lundi 7 /12/20, les PC clients en SdC ont été déplacés et re-organisé avec les numeros
client1 ,2 , 3 ,4 ,5 dans le sens horaire en salle de controle, en commencant par la gauche en entrant
+----------------------------------------------------------------+ |
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Hayg; RE:
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Pour info :
client 1 ne fonctionne pas encore. Il n'a pas été utilisé depuis longtemps, Guillaume a été prévenu
pour y jeter un oeil.
Client 3 et 5 sont maintenant aux places qui n'ont qu'un seul écran. Une MAJ de la salle devra être |