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  Toutes les notes concernant les Commissionning de ThomX  Not logged in ThomX    logo
Message ID: 1167     Entry time: Thu Dec 11 08:38:30 2025
 Author: VM, IC 
 Status: Under Process 
 Type: Shift summary 
 Category: Diag | Ring Commissioning 
 Important:
 Subject: 40 MeV operation 
 Icon:  

8h37 Warm-up ThomX: Modulator, Laser, Fridge

8h44 Chillers were started, cycling all magnets.

9h49 HV is ON

9h59 Can not see beam charge and cameras

10h37 Cameras are OK, ISTs are not.

10h38 Beam is in the ring at 50 MeV, all seems OK. Transition to 40 MeV

10h52 receipt from recipe_recipe_LI_TL_RI_all_20251209_17_54_51.txt

RF Gun phase  241 dg., Sect. phase 200 dg. Sect. Att. 3.82 dB, Linac steerers: H [0.87 -3.27], V [-3.0 3.63], Charges (BPMs):  -111, -107, -107, -104, 98 pC

11h03 Beam is in the ring

Orbit correction. Optimization of the beam. The beam size at MRSV is about ~25 pixels.

The orbit is correction with a reasonable beam storage. (see the screenshot).

A short run wiht the X-rays thanks to Ronic.

The beam is very unstable. To minimize the syncrotron oscilations it is often neseccary to adjust RF cavity phase, sect. Att. value end section phase

14h15 HV on standby

16h18 HV is ON

17h10 Stop ThomX

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