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. VM, AL, ND, LS; Orbit correction, optimization of the storage, study of the RF frequency 8x
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9h30 Start of the modulator and lasser (GATE is closed).
9h46 Data is taken as background.
Cavity is tuned to 500.38 MHz. Optimization of the energy and phase. |
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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. VM, LS, JNC; Test of the new optics (27-28 July) 6x
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Start of the modulator and laser at ~9h and hour later start the beam.
Working at 500.38 MHz to retrieve the previous state of the ring. Then switching to 500.33 MHz (assumed ring proper frequency).
- Optimization of the injection and ring (orbit, betatron/synchrotron oscyllations, tune....) |
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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 |
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VK, VM, IC, LS; Work on the new ring lattice (August, 2-4) 13x
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Starting point nominal lattice D1Thomx_017_064_r56_02_chro00 with the MCF=0.014 chro=0/0
Goal: test the new lattice with MCF=0.0231 chro=0/0 which alows to decrease the RF frequesncy down to 500.25 MHz. This will make possible
operation witht eh FPC. |
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RC VC MJ ; commitionning
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Chauffage mod 11h
demarrage machine 14H
on suit le star faisceau step par step |
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KD, VK, VM; run du 27 février 2024
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9h: mise en chauffe de la machine (chillers, laser, aimants, modulateur)
Mohamed regle la cavité RF sur 500.06MHz |
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IC, VM, VK; Restart and tuning of the injector
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10h Intervention to repair the water leakage. It was repaired.
New problem with vacuum pomp is found in the ring. The two problems are due to the water leakage. Intervention is ongoing.
12h Warm up of the machine |
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IC, VM, VK; X-ray generation
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8h50 Warming up the machine
10h start the beam
Tuning the injector |
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VK, VM, IC; Recomissioning of the SR, search for the X-rays
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8h50 Warming up the machine
Problem with the vaccum around the RF cavity (see screenshot attached). Intervention of vacuum team is needed.
Mohamed is installing the powermeter to monitor the incomingt RF power for the accelerating structure. |
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KDn Dupraz from 109.222.35.58 on Thu Oct 31 08:19:12 2024; shift du 31 octobre 2024
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8h15: mise en chauffe en remote (modulateur, laser, chiller, Cycling)
Tuning of the linac and injection to the ring
Goal: Search for the non-dispersive orbit and proper RF frequency |
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VM Entered by Super Team from 134.158.195.141 on Thu Nov 21 08:26:43 2024;
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08H25 Start ThomX
09H45 HV is 'ON'
09h49 Breakdown in the RF Gun |
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VM, IC, VK ;
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08h18 Start ThomX
10h00 HV is 'ON'
10h35 RF Gun phase is 174 dg. Section Phase is 209 dg. Sect. Att. is 2.70 dB TL/BPM2 X=0, Charge is -127 pC |
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VM Entered by Super Team from 134.158.195.141 on Thu Dec 5 08:31:12 2024;
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08h28 Start ThomX
08h40 Some magnets remain switched off. Cycling was not performed
10h20 V is 'ON' |
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VM, IC, VK, HG ; 8x
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08h25 Start ThomX
09h55 HV is 'ON'
10h18 RF Gun Phase is 159 dg. Sect. Phase is 208 dg. Att. 2.66 TL/BPM2 X=-2mm, Isol =230 A, Charges: -115 pC, -95.7 pC, -100 pC |
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VM, IC, VK;
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08h23 Start ThomX
09h40 HV is 'On'
10h24 RF Gun Phase 183 dg. Sect. Att. is 2.533, Phase 212 dg. Charges; -100.0 pC, -93.0 pC, -109.0 pC, Linac steerers H [2.68 -4.4], V [-2.0 |
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IC, VK, VM;
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11h05 Start ThomX
11h50 BPM02-Libera04 wiring has been checked: 'OK'
12h20 HV is 'ON' 1215 V |
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IC, VK, VM, ND; 10x
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08h25 Start ThomX: Modulator, Frigo, cycling all magnets
08h30 Start chillers
10h00 HV is 'On' |