VK, IC. VM, LS; Work on the new optics
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9h30 Start of the modulator and laser
Start of the beam. Problem with charge, the max charge at the end of the TL 60 pC. We can not increase it by the attenuator. To be understood.
Corrector ri-c2/ps/str.03-h.01 does not work => problem to control and tune the orbit. JNC will look |
VK, IC. VM; Reestablishing running conditions at 500.38 MHz 
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Goal of the shift: Reestablish the good storage at 500.38 and then try to optimize the storage and orbit.
Start up of the machine.
RF cavity start up by Mohamed. Water leakage. Jean-Noel will fix tomorrow mornig. Mohamed also says that aparently the sinal from ring syntetizer |
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VK, IC. VM; Srart of the beam physics measurements 14x
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The main idea fo this week is to prepare the beam for the search of the first X-rays.
Start machine without RF cavity. During the day several reboot of the libera.02 (TL).
Study of the dispersion. Measurements of the horizontal dispersion by changing the injector energy (RF section attenuator). |
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VK, IC. VM; Orbit correction, BLM in the Ring 7x
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The BLM detector boxes were installed in the ring. We connected 3 fibers and 2 scintillator detectors in th ring to be able to observe the beam losses.
Cabling, connection and checks of the BLM without the beam.
Machine start-up. Modulator was switched on at ~9h30. |
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VK, IC. AL; Understanding of the shift in RF frequency 18x
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8:40 Start warming up, problem with PSS. It was restarted.
Problems to start and tune the RF cavity. A clear working procedure and reliable tuning should b defined to optimize the Ring comissioning progress.
Feedback for teh RF has the suspicious behavior. At motor position close to the nominal, the feedback ofsets the motor in the negative direction |
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VK, IC, DN, RC, JN; search for X-rays
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8h30 Start of the modumator, laser, magnet cycling
9h45 Beam is ON. Scan charge vs. RF phase.
Attribute Li/OP/OPT.01-ATT.01 is showing value 340mm, this is different from the nominal ones of 300-303. Charge to be remeasured at nominal |
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VK, IC; RF frequency of the Ring
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In the morning, after the start-up pf the machine, scan phase-charge and small tuning it was possible to store the beam with the settings from previous
day.
The storage was optimize withthe dipole current of 159.9 (best storage up to now). RF cqvity voltqge 20-100 kV. |
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VK, AL, IC; Beam is stored 6x
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Shift started at 18h
With the current injector settings, it was difficult to inject. We loaded the settings from last Friday 30/09 (19-22-04).
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VK VM; Shift 03
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Start modulator; alims;
We cannot start machine. No e-beam. Timing laser RF? Need help of linac team.
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VK VM; RE: Shift 03
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evreything is ok
The laser shutter was closed ! Becareful the shutter state is inverted.
VK |
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VK VM; RE: RE: Shift 03
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Il se passe des choses pendant la nuit qui mette les diags de la machine en radent :
- Tous les BPM saturent ==> necessité de remettre la "puissance" à -10
- Toutes les caméras étaient éteintes ==> necessité d'aller dans "DS restart" pour un forcage |
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VK VC HG SC ME; commitionning
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8h10 rémarrage machine chauffage klystron frigo et chiller
pB DS calc/er_sy/rac.17-elr.01-rdp.0X.Y (tous les DS redpy baie 17 )
Cycling ok |
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VC/SC; Commissionning LE
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8h20 demararage machine
laser PC
Frifo chiller |
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VC/ND; RE: Q beam versus E laser
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Verification resistivite eau:
- 6.7Mo dans la baie 18 (alims)
- 550ko sur la voie 1 dans le local technique |
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VC/KD/SC; Faisceau linac
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13h : MO : Mise en chauffe modulateur et mise en route refroidissement
14h : Fermeture casemate, démarrage
Problème avec client 2 |
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VC/KD/HM/HG; Shift Linac + LT 25 aout 2022
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14h00 : injection dans la TL avec faisceau sur TL-SST2
avec les parametres QP1=+1.6A, QP2=-4.2A, QP3 3A, tl str1V=+0.6A, listr1H-1.48A
Phase osc laser a sauté : |
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VC-VM; Shift summary
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demarrage modulateur 8h50
"Perle" avait ouvert les portes de l'igloo.... le clés sont récupérées... Maher fait la ronde
Les personnes allant dans les fosses nord et sud doivent laisser les portes dans la position initiale!! |
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VC-MJ; Demarrage faisceau
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faisceau... sur Li SST0.1
position laser était à 5.1 2.55 (on ne sait pas pourquoi)
mise à la nominale (5.4, 2.34) |
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VC-KD; commitionning 10x
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8H50
Demarrage chauffage, chiller, et cyclage aimants
TL/PS/DPI.01 en défaut resolu par un reset sur l'ATK pannel |
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VC-CB-KD; run du 26 aout 2022
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9H
mise en chauffe modulateur
10H modulateur OK |