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  Notes concernant la preparation du Commissionning, Page 2 of 3  Not logged in ThomX    logo
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  25   Fri Sep 2 08:51:46 2022 MO Shift summaryetc démarrage 

8h35  mise sous tension: PSS, LB9000, modulateur, chillers

  6   Thu Dec 3 10:58:11 2020 Entered by Hugues Monard from 134.158.195.145 on Thu Dec 3 10:57:47 2020FixedInfodocs demarrage a blanc 3 dec 2020 

Bilan démarrage à blanc 3 dec 2020 : (H Monard, S Cavalier)

but : verification etat IHM pour conditionnement RF avec H Monard + JN Cayla

Sur compte H Monard : sur Client2 plateforme IHM ne se lance pas

Sur client 5 : impossible entrer le nom de logging --> reboot client 5 puis looging possible

 

plateforme IHM :

IHM qui se lancent : LinacLaser, Vide, Modulateur, RF Gun section, Alims, Ds controller, Ds status, Screenshot, Jive, Astor, (DIag)BPM, (Synchro) Phase

IHM qui ne se lancent pas : SST, WaveCat viewer, RPW, demarrage delays, Diag delays

** LinacLaser : etat lasert on/off : ok ,  status Synchro laser Etat on/off : en noir

                     acquisition image : ok, deplacement miroir 4 et 5 ok, mesure position ok

** Vide : ok . pompe qui n'existe pas en fin de voie drecte a enlever sur synoptique

** Modulateur : ok, demarrage puis modification HT fonctionne

** RF GUN_Section : consigne chiller canon grisée --> reboot  puis retour a la normale (inverser Frigo/Chiller RF canon), Temps Trend : ok

   RF signal : visu photodiode impossible --> câble debrancher puis parametres redpitaya à modifier

                  signal Photodiode visible vers 16h apres modifications des parametres 

** Ou se trouve le reglage du pulse RF (largeur du PA entre 1 et 3 µs) ?

Remarques :

Lors du conditionnement nous aurons besoin de varier la HT modulateur, la largeur RF, la frequence de repetition, les attenuateurs RF , la phase RF entre le canon et la section.

--> faire un mode conditionnement sur  IHM RF qui fait apparaitre : vide canon, vide section + trends, qui puisse piloter Frep, HT modulateur, largeur de pulse RF

Au niveau des diags, nous devrions être capable de mesurer le courant d'obscurité à la sortie du canon et de la section.

 

 

 

 

 

 

 

 

 

 

  7   Thu Dec 3 13:45:13 2020 Entered by Hugues Monard from 134.158.195.145 on Thu Dec 3 13:44:55 2020FixedInfodocs signal photodiode laser 
Attachment 1: photodiode-laser2.png
photodiode-laser2.png
  28   Fri Sep 23 09:44:14 2022 IC, VK, AM, VC, NDUnder ProcessInfodocs Beam requirements for the ring 

The following parameters are required for ring operations:

- At least 50pC on TL/DG/ICT.01 with std <20pC

- At least 20pC on TL/DG/ICT.02 with std <20pC

- Energy in the TL must be checked and must be 50 MeV =>  TL/BPM.02 SpX, SpY <1mm  with Std(SpX, SpY) <1mm with nominal value for TL/PS/DP.01

- Beam position must be checked on TL/DG/SST.01, TL/DG/SST.02 and TL/DG/SST.03 and be within the acceptance (see tickbox acceptance on IHM_SST).

- Beam size must be measured on TL/DG/SST.03 and be < 2mm FWHM

- Beam recipes for the LI and for the TL must be saved.

- Health check must be checked (no red entry).

- Beam centered on the last quadrupoles of the transfer line.

This list will evolve as we progress in the ring commissioning.

 

  31   Tue Sep 27 17:45:54 2022 NDUnder ProcessInfodocs RE: Beam requirements for the ring 

An IHM to check some of these parameters has been created (git/panneaux/StatusInfoIHM_ring_vars.py) and added to Plateforme_IHM...

Quote:

The following parameters are required for ring operations:

- At least 80pC on TL/DG/ICT.01 with std <20pC

- At least 20pC on TL/DG/ICT.02 with std <20pC

- Energy in the TL must be checked and must be 50 MeV =>  TL/BPM.02 SpX, SpY <1mm  with Std(SpX, SpY) <1mm with nominal value for TL/PS/DP.01

- Beam position must be checked on TL/DG/SST.01, TL/DG/SST.02 and TL/DG/SST.03 and be within the acceptance (see tickbox acceptance on IHM_SST).

- Beam size must be measured on TL/DG/SST.03 and be < 2mm FWHM

- Beam recipes for the LI and for the TL must be saved.

- Health check must be checked (no red entry).

- Beam centered on the last quadrupole of the transfer line.

This list will evolve as we progress in the ring commissioning.

 

 

  32   Wed Sep 28 09:56:44 2022 ND, ICReference SolutionInfodocs Steerers and BPM map for the ring 

See attached files.

Attachment 1: BPM_ring.png
BPM_ring.png
Attachment 2: BPM_ring.pptx
  39   Mon Dec 5 10:05:11 2022 VK, IC, VM, JH, KD, NDNew SolutionInfoanalyse Summary of the ring commissioning meeting 

The ring orbit has been re-established despite some difficulties after the shutdown.

The ring cavity has been started. Whatever the phase it kills the beam.
Two hypothesis:

1) It can be a frequency problem

2) It can be a transverse kick given by the cavity

About 1:

- Magnet current and frequency have been scanned but no effect.

About 2:

- We see betatron oscillation.

We see the beam lost by steps, not a continuous decrease.

https://elog.lal.in2p3.fr/THOMX/Commissionning/221202_190728/Screenshot_from_2022-12-02_18-02-36.png shows betatron oscillation with cavity tuned.

Next steps:

- Mesure FFT of BPM signal (VM, VC)

- "Open the ring" (kick the beam out of the ring) and study the effect of the cavity (phase, power) on the BPMs. (VK, IC)

- Scan betatron oscillation vs phase, orbit, power and frequency

- Slava: To catch the beam you should think like a beam.

Actions:

- Try to get remote control of RF synthetizer (ND)

 

 

  41   Tue Dec 6 00:15:55 2022 NDNew SolutionInfoanalyse RE: Summary of the ring commissioning meeting 

Regarding the remote control of the RF synthetizer: it can only be controlled via GPIB and RS-232.

=> Phase shift will be done from the synchro synthetiser

=> Power control can be done with a variable attenuator controlled by the synchro synthetiser or a delay generator.

 

 

Quote:

The ring orbit has been re-established despite some difficulties after the shutdown.

The ring cavity has been started. Whatever the phase it kills the beam.
Two hypothesis:

1) It can be a frequency problem

2) It can be a transverse kick given by the cavity

About 1:

- Magnet current and frequency have been scanned but no effect.

About 2:

- We see betatron oscillation.

We see the beam lost by steps, not a continuous decrease.

https://elog.lal.in2p3.fr/THOMX/Commissionning/221202_190728/Screenshot_from_2022-12-02_18-02-36.png shows betatron oscillation with cavity tuned.

Next steps:

- Mesure FFT of BPM signal (VM, VC)

- "Open the ring" (kick the beam out of the ring) and study the effect of the cavity (phase, power) on the BPMs. (VK, IC)

- Scan betatron oscillation vs phase, orbit, power and frequency

- Slava: To catch the beam you should think like a beam.

Actions:

- Try to get remote control of RF synthetizer (ND)

 

 

 

  49   Mon Mar 13 09:39:39 2023 IC, VM, SC, JH, VC, NDNew SolutionShift summaryanalyse Summary of the ring commissioning meeting 

Excitation (betatron oscillation) on the beam observed by exciting it with the extraction kicker => initial measures of the tune.

Tune measured close from expected value.

Reason for oscillation damping is not understood.

The attenatuator of the RF section has to be tuned from time to time to keep the beam energy (beam position on TL/BPM.02).

Energy tolerance of the ring lattice: +/- 1% (but this may affect the transport upstram in the TL).

Next steps:

- Measure oscillations at different cavity power to see how they are affected.

 

 

 

 

Attachment 1: data_2023-03-10_15-39-12.png
data_2023-03-10_15-39-12.png
Attachment 2: tbt_x_relative_integer2.png
tbt_x_relative_integer2.png
Attachment 3: tune_simulation.png
tune_simulation.png
Attachment 4: tune.png
tune.png
Attachment 5: tbt_x_kicker.png
tbt_x_kicker.png
  53   Mon May 22 10:05:30 2023 IC, VK, LS, JH, NDNew SolutionShift summaryanalyse Summary of the ring commissioning meeting 

=== Summary of last week:

- Frequency was reduced to 500.0202MHz but the beam stayed only for 100s of turns

- Good storage was achieved at 500.40MHz:

* Study of the effect of beam energy (linac section attenuator) on the orbit

* first attempts of BBA

=== Measures to do

Thursday: goal store at 500.0202MHz

- Use a spectrum analyser to check the FFT of the BPM electrodes as function of dipole current (Nicolas)

- Scan RF cavity (phase + plunger) at 500.0202MHz (Lisa+ Nicolas)

- check BPM convention (Lisa)

- Adjust beam energy (linac section attenuator and phase) to adjust ring frequency

Friday: Goal increase cavity voltage

- Orbit correction (BBA+SVD) (Iryna + Slava)

- Measure momentum compaction factor

 

  54   Tue May 30 10:12:30 2023 VK, IC, JH, VM, LS, MB, NDNew SolutionInfoanalyse Summary of the ring commissioning meeting 

Main studies:

- Measure bucket width in phase on Thursday at 500.02MHz => no storage beyond 45kV

- Measure frequency with spectrum analyser => 500.39MHz

- Preliminary study of BPM polarity

Next studies:

- Study again BPM polarities

- Redo spectrum analyser/FFT measurements of orbits at injection

- Study magnetic elements in balistic mode

- Visually look at the ring to see possible issues and changes to make

- Continue to do beam physics at 500.40MHz especially dynamic aperture

- Try to localize where losses occur during operations

 

 

  1   Tue Nov 19 11:16:39 2019 Entered by Hayg Guler from 134.158.195.145 on Tue Nov 19 11:16:25 2019Under ProcessShift summaryPrise de donnees   

Salle de controle :

  • installer Xlib pour tout le monde
  • mettre les environnements en place

IHM vide :

  • couleurs ??

Chiller :

  • rajouter Rac17 AI1
  • voir avec Maher pour faire une IHM

Plateforme IHM

  • faire des icones plus gros
  • rajouter

Modulateur

  • A mettre en remote
  • sur l'interface cliquer sur Remote
  • mettre les secondes ou barre de progression sur le panneau Modulateur
    • plutot de d'aller sur Jive

Laser

  • voir la procédure pour le démarrage
    • Ampli
    • Oscillateur
    • Synchro
  • Lame demi-onde (equivalent de la densité optique) -- LI/OP/OPT.01.Att.01
    • sera dans l'IHM
    • pour tuner l'energie Laser
    • on devra faire la calibration
  2   Tue Jul 7 14:25:15 2020 Entered by bruni from 134.158.195.142 on Tue Jul 7 14:24:55 2020Under ProcessShift summaryPrise de donnees test régulation températures canon/section 

Ouverture des chillers et du frigo sur place.

Ouverture de l'IHM plateforme

Mise frigo ON et les chillersV

canon à 6V, et section à  6.3V

Mise à jour de l'état des boutons verts frigo et chiller

trend température, ajouter autoscale, bouton clear ne semble pas marcher

On met la consigne canon à 7V, la température monte à 33 degrés

Si le frigo s'arrete, il se met en défaut. La température monte au niveau des chillers, qui sont bridés à 10V (50 degrés).

Il faut récupérer l'état des chillers (booleen qui va venir d'un cablage des chillers, et à connecter à l'automate). Si un des états est off et que la RF est ON, il faut couper la RF (trig modulateur).

 

 

 

 

Attachment 1: screenshotIHM_RF.png
screenshotIHM_RF.png
  Draft   Wed Jul 8 14:33:04 2020 Entered by bruni from 134.158.195.142 on Wed Jul 8 14:32:48 2020Under ProcessShift summaryPrise de donnees test moteur solénoide en charge 

Prise de mesure relative entre les deux bobines : 18.7cm avec les alimentations éteintes mais du refroidissement.

Mise en route des alimentations 80A sur la contre champ, et 275 sur la focalisante.

Prise de mesure à nouveau : 18.7cm --> ca n'a pas bougé

On bouge le moteur Translation  li/ae/col.01-mot.01 qui doit faire une translation horizontale : +6 mm butée, -25mm.

On remet off les alimentations des solnénoides

L'encodeur pos ne se met pas à jour : on en déduit que le moteu ne marche pas correctement

On fait la translation verticale col01-mot.02

 

 

 

 

 

  8   Thu Dec 3 13:50:27 2020 Entered by Hugues Monard from 134.158.195.145 on Thu Dec 3 13:50:13 2020FixedInfoPrise de donnees signal photodiode 03-12-20 
Attachment 1: plot.pdf
  9   Thu Dec 3 15:17:04 2020 Entered by Hugues Monard from 134.158.195.145 on Thu Dec 3 15:16:48 2020FixedInfoPrise de donnees   

Signaux RF - REdPitaya 03-12-20

Photodiode laser - RP.04 A

QS RP.04 B

 

Pic RP.03 A

Prc RP.03 B

PiS RP.02

PrS RP.02


 

 

  10   Thu Dec 3 15:26:22 2020 Entered by Hugues Monard from 134.158.195.145 on Thu Dec 3 15:26:07 2020FixedInfoPrise de donnees   

signaux photodiode PrC Qs test avec generateur impulsion ! 2 V , 3 µs (bleu ciel)  et signal avec rampe, 1V (moire), photodiode (rose)

Attachment 1: photodiode-Prc_Qs.pdf
  16   Thu Mar 4 16:36:12 2021 Entered by Sophie Chance from 134.158.195.141 on Thu Mar 4 16:35:53 2021Under ProcessShift summaryPrise de donnees Tests IHM RF  

De nouveaux tests ont été fait sur l'IHM RF amélioré (M. Omeich, H. Guler, S. Chance, JN. Cayla)

Tous les redpitayas ont été testés via un générateur de retard.

Attachment 1: IHM_RF.png
IHM_RF.png
  17   Thu Mar 4 16:46:04 2021 Entered by Sophie Chance from 134.158.195.141 on Thu Mar 4 16:45:48 2021Under ProcessShift summaryPrise de donnees   

Test du repitaya 1 voie 1 (Pi section) et 2 (Pr section)

 

Attachment 1: RDP.01_voie1.png
RDP.01_voie1.png
Attachment 2: RDP.01_voie2.png
RDP.01_voie2.png
  18   Thu Mar 4 16:56:19 2021 Entered by Sophie Chance from 134.158.195.141 on Thu Mar 4 16:56:07 2021Under ProcessShift summaryPrise de donnees redpitaya 2 

Tests du redpitaya 2 voie 1 (Boucle section) voie 2 est libre

Attachment 1: RDP.02_voie1.png
RDP.02_voie1.png
ELOG V3.1.4-395e101