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Message ID: 1162     Entry time: Thu Dec 4 08:59:07 2025
 Author: Entered by Super Team from 134.158.195.141 on Thu Dec 4 08:58:52 2025 
 Status:  
 Type: Shift summary 
 Category: LI | TL | Ring 
 Important:
 Subject: Preparation/check of the 70 MeV WP for X-ray run 
 Icon:  

Goal: preparation and checking the machine operation at 70 MeV and 40 MeV (ideally with X-rays)

8h54 Warming up
RF section 29.20 C -> 28.5 C

9h45 Beam on

Start at 50 MeV and then going to 70 MeV with 70MeV_Xrays_I3I4_20kpA_flatVertorbit_vertSigma_122um__20250821_14_36_08.txt

In this recette the dipoles are at 253.78 A which is 2A lower than nominal current for 70 MeV. The goal is to go to the nominal value.

Phase scans, beam is transported to the ring. Only few turns.

Scan of he RF cavity phase.

scope 192.168.229.22 which used to monitor losses and charge is not accesible as someone else is connected to it from srv 3 with  192.168.229.92. We need control of this scope in the CR.

After also checking it locally, the signals were not set, cable unplugged.

12h30 Problem with SST. Nicolas is checking.

Optimization of the injection. HCOR/VCOR are set to zero. Storage obtained; RF ON freq 500.031690 MHz

Several interlocks shutter laser linac

13h20 Stop for the visit

14h47 beam on

Daniele worked all the afternoon with the students. FPC is changed for 70 MeV.

MRSV does not start; need help for it

Work on the 70 MeV. orbit is corrected. The final tutning should be checked with X rays.

At the end we understood thqt the EL dip is set to 159.3 A. The orbit was recorrected with only the EL dip set to 253.8 A (the difference in the orbits is shown in the scrennshot). The rest of the elements of the EL are should be scaled to 70 Mev (it will not impact the orbit as dipole)

The recetter is saved:

70MeV_ELdip253p8A_20251204_18_10_12.txt

70MeV_with ELat50MeV_20251204_17_10_20.txt

The BLM signals during the shift were moving in time: to be understood, maybe timing problem.

This configuration must be checked with MRSV and/or X-rays to confirm the X-ray flux

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