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Message ID: 1050     Entry time: Wed Apr 2 08:25:07 2025
 Author: Entered by Marie Jacquet from 88.165.97.136 on Wed Apr 2 08:24:51 2025 
 Status: Under Process 
 Type: Shift summary 
 Category: Linac Commissionning | Ring Commissioning 
 Important:
 Subject: Programme mercredi 2/04 
 Icon:  

9h: mise en chauffe machine depuis bureau (Modulateur, laser, frigo/chiller, cyclage aimants)

Problème sur les Dipôles TL et EL (erreur à acquitter sur place)
Erreurs acquittees

Pas de timing (oscillo plat diode chassi synchro eteinte) - Appel Vincent - J'attends qu'il passe .....
11h30 Fixed frequency and trigger issue - Probleme resolu (bouger frequence dans panneau cavite RF ...)

Modulateur ON

11h59 RF gun phase is 222 dg. Sect. phase is 205 dg., Att. 2.534 dB, linac steerers H [0.75 -2.88], V [-3.36 2.8], Charges: -91 pC, -90 pC, -100 pC

12h05 The beam passed to the ring after the DP ring power supply was reset. Receipt from 20250321_12_30_52.

Problem with RF Cav. interlock - Appel Mohamed
12h40  The “Start RF” button does not start the RF cavity power supply, fixed by restart RF cavity PID

13h15 Beam in the ring, RF gun phase is 222 dg. Sect. phase is 209 dg., Att. 2.47 dB, Charges: -93 pC, -92 pC, -102 pC, RF cav. at 150 kV, phase 24 dg. Freq. 500.10051 MHz, manual shifter 3087, ring chrge stability: 2.4% rms during 220 s 

Pb signal synchro cavite FP
14h11 The modulator set to 'Standby' the RF cavity stoped.
14h30 Access to the bunker - pb fixed

14h42 HV is 'ON' 

14h57 RF Gun phase is 217 dg., Sect. phase is 209 dg.  RF Cav. 150 kV, phase 22.5 dg., Freq. 500.10051 MHz, TL/BPM2 X= 4 mm

X-rays vers 15h30-16h

---------------------------------------------

Programme shift 02/04

A 50 MeV :

** Prendre un spectre en mode SYNCHRO
** Prendre un spectre en mode DESYNCHRO

      - completement desynchro = sans aucun pics
      - sans changement des conditions anneau)
        (le but est de voir si c'est sensiblement different ou non)

FAIT - cf pj  ( ...... ??? a expliquer ...)

** Calibration positions fente 2 vs hexa echantillon

** Demarrage commissioning transfocateur avec camera photonic science
         Pas demarre

5h45 Stop ThomX

 

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