08h15 ThomX was started; Modulator, Frig, Laser

08h21 Chillers were started, cycling all magnets

09h40 HV is 'ON'

Scans of phase charge were performed

10h22 Beam in the ring, receipt from 20250605_17_33_45. Linac steerers: H [0.36 -2.55], V [-2.36 2.66], Phases: RF Gun  165 dg., Sect. 214 dg., Sect Att. 2.6, TL/BPM2 X=0, Charges (BPMs): -114 pC, -113 pC,  -125 pC, -125 pC

MRSV: Hor. Std = 19.2812 pix, Vert. Std = 13.8814 pix

11h40 Going to 70 MeV. Sect. Att. 0.228, Phase 237 dg., RF Gun Phase 150 dg.

At F RF cavity 500.0328 MHz interlock on water cooling. Fixed by JN.

Trying to find horizontal tune.

At 70 MeV the MRSV camera saturated.

Work on the orbit correction.

Vertical scan with FPC. Sigma _y = 

The receipy is saved and can be used for the spectrum measurements. Further studies to be continued if needed.

FPC Table Vertical Scan: sigma Y =132 um

17h02 Stop ThomX

Goal: Vertical orbit and angle at the IP with I3 and I4 X-ray signals

8h55 Switch ON the modulator and all the machine

Camera SST2 : impossible de changer le temps d'expo    and SST3 not started

• Phase max Q = 333° with Q = 130 pC
• Phase Sec : 203°  and Att = 2.46 dB
• Aligned quads

With the previously saved receipt, the injection and charge of the stored beam was quite bad. We tried several receipts. We tried to tune the ring till ~16h.

The FPC was operated in synchronous mode with the power twice less as typical value.

The TL transport was different from previously used. We should try to keep the same orbit in the TL for reproducibility. 

The FPC scan showed the two peaks structure => to be understood.

Then, we re-loaded the lattice from folder Reference (changed the laser position @photocathode). With the energy-phase adjustments we arrived to the resonable conditions. The FPC scan is attached.

Both I3 and I4 were recorded/displayed during the shift. In this configuraiton, the X-ray signal was mainly maximized and I3 ~7k-8k pA (I4~ a few hundreds of pA).

The vertical orbit was modifief to have zero angle at the IP. See the plot attached. 

In this configuraiton, the X-ray signal was almost equally shared between I3 and I4 ~ 1k pA.

A proper conditions and FoM should be defined for further optimization procedures. 

18h15 STOP THOMX

7h40: mise en chauffe à distance (modulateur, frigo/chiller, laser, cyclage)

==> IHM cyclage très longue à lancer, (a planté hier, pas aujourd'hui), des nan apparaissent (cf. screenshot)

08h45 Start modulator

09h09 There is a problem with the HV increasing above 1212 V

09h21 HV=1215 V

09h35 Beam is in the ring

RF gun phase 272 dg. Laser Att. 280 for -100 pC, Sect. Att. 2.38 dB, Phase 207 dg. Linac steerers: H [0.85 -3.17 ], V [-2.24 2.78]  

09h49 RF gun phase 282 dg. Laser Att. 280 for -100 pC, Sect. Att. 2.38 dB, Phase 210 dg. Linac steerers: H [0.85 -3.17 ], V [-2.24 2.78]  

Laser feedback does not seem to support maximum laser spot density

09h55 Modulator set to standby

Magnet offset: output Ri_C2 DP04 rise 6/12 turns, output Ri_C1 DP04 fall 3/12 turns,

12:00 HV in standby mode

14h30 HV is ON

Several accesses in the casemat with Rodolphe to rotate the dipoles. 4 dipoles are totated.

The vertical orbit seems to go in the good direction. Work in progress.

Still need one iteration tomorrow morning with Rodolphe.

18h20 STOP THOMX

08h31 Warm-up ThomX: Modulator, Laser, Fridge

08h36 Chillers were started, cycling all magnets.

10h07 HV is ON

10h09 HV set to 1215 V

10h330 Beam is in the ring 70 MeV

08h40 Warm-up ThomX: Modulator, Laser, Fridge

8h45 Chillers were started, cycling all magnets.

10h10 HV is ON

10h14 Going to 70 MeV

10h44 Beam is in the ring W/O RF, 70 MeV

Manual ring shifter set to 6124 RF 50 kV

11h56 Ring RF set to 100 kV RF phase 17.5 dg.

13h34 Good receipt  recipe_recipe_LI_TL_RI_good_20251212_13_56_38.txt copied to references as 70_MeV_Vert_tune 0.66_good_20251212_13_56_38.txt

Rf gun phase 239 dg., Sect. Att. 0.18 dB, Phase 243 dg., TL/BPM2 X=-1mm,  linac correctors H [1.0 -3.32], V [-2.02 2.10], Charges: -85, -81, -82, 84, -82 pA, Laser Att.  281.

MRSV fills the all slit. Storage up to 100%

14h10 ==> 50 MeV Manual phase shifter value set to 4876. Sect. temperatute set to 30C (clarinette, consigne = 29.2C).

14h39 Beam is in the ring.

14h40 HV on standby, Cycling all magnets.

15h08 HV is ON Receipt: recipe_recipe_LI_TL_RI_good_20251125_16_42_01.txt. Copied to references: 50_MeV_good_tune_0.17_0.7_20251212_16_03_54.txt

MRSV size at 50 MeV down to 23 pix.

Studies Model_real Machine for the ring. Data to be analyzed.

17h07 Stop ThomX

7h50: mise en chauffe en remote (chillers/frigo, modulateur, cyclage)

08h57 HV is on

09h22 Beam is in the ring W/O RF, recipe_recipe_LI_TL_RI_all_20260219_13_17_17.txt loaded

09h25 RF 100 kV

09h42 F gun phase 23 dg., Sect. att. 2.47 dB, Sect. phase 218 dg., charges (ICT): about -100 pC, charges(BPMs): all -105 pC

The receipt saved: recipe_recipe_LI_TL_RI_all_20260220_10_42_56.txt ==> Vert. around IP +3 mm to -2 mm

The receipt saved: recipe_recipe_LI_TL_RI_all_20260220_10_43_52.txt==> Vert. around IP -1 mm to +1 mm

12h17 Standby

13h31 HV is on. Shunt resistors were removed from the dipoles 

14h28 Standby. Shunt resistors of 15.4 Ohm installed

15h09 HV is on. Charge dropped. Laser att. 244 ==>260 to restore 100 pC

AM :

État a l'arrivé :

8h30 : Victor dans la casemat en accès controlé/mode maintenance canon pour faire des tests sur le chutter Laser

Resistivité de l'eau : 6.85 Mohm
Presion vanne vide : 7 bar

Health check :

• li/op/opt.02-las.01-osl.01 :
  • état : FAULT
  • status : OK
  • Normal ? (laser fonctionel)
• EL/PS/QP.07 :
  • état : server_off
  • -> demarrage du server :
    • état : FAULT
    • Status : PowerSupplyManager : Failed to start Power Supply.
  • Re-extinction du server

• EL/PS/QP.05 :
  • état : ALARM
  • status :
    •  port 1 configured as -- no information --  
      SIGMAPHI-6 REMOTE OPERATION 
      Alimentation Port 1 DC OFF 
      Alimentation Port 1 INTERNAL INTERLOCK HARD 
• RI-C2/PS/STR.02-V.01 :
  • état : ALARM
  • Status :
    •  port 1 configured as -- no information --  
      SIGMAPHI-6 REMOTE OPERATION 
      Alimentation Port 1 DC OFF 
      Alimentation Port 1 SOFTWARE INTERLOCK 
• Vanne de vide de l'anneau :
  • état : FAULT
  • -> FaultAck sur toute les vannes permet de corriger le problème
  • Nouvel état : OK
• Jauge de l'anneau : Plusieurs sont éteinte (probablement des jauge suprimer, modification dans les fichier de configue de Health_Check nécésaire)

Pas de problème empechant le démarrage de la linac, la TL et l'anneau

Chiller/Frigo déjà allumé

8h50 : Mise en chauffe modulateur
-> Victor a fini. Repasser en mode Exploitation n'arrete pas le chauffage du modulateur

9h50 : Chauffage Modulateur fini
Passage en standby
Plus de 10min après toujours "standby on request" -> reset -> Passage en standby immediat

10h05 : passage en Trig (a 990V)
-> modulateur tombé

10h10: Modulateur en trig

10h15 : Alimage des elements magnétique
chargement recette : recipe_recipe_LI_TL_RI_20220919_21_25_56.txt

10h20 : scan charge/phase : sauvé dans /data/shared/Commissioning_tools/Mesure/20220923/scan_charge_phase_modulateur_1010V.png
phase charge max : 390 (=30[360])
=> phase energie max : 340

10h37 : passage du modulateur a 1090V
=> Modulateur tombé
rallumage a 1090V -> tombé
rallumage a 1040V -> ok
Monté lente (10V toute les 30s) à 1090V -> OK

11h : nouveau scan charge/phase avec le modulateur a 1090V
-> sauvé dand : /data/shared/Commissioning_tools/Mesure/20220923/scan_charge_phase_modulateur_1090V.png
Allure différente du cas precedant (maximum de charge plus au niveau de la chute de charge, mais 20deg avant)
Phase de chute de charge : 370
Phace de maximum de charge : 350
Phase d'énergie max : 320 ?

11h05 :
Allumage dipole TL/PS/DP.01

11h10:
recherche de la phase d'energie max du canon en modifiant la phase et charchant a avoir le maximum de courant dans le dipole TL/PS/DP.01
Energie max autour de 305-310
Pas très concluant,

11h20 : retour sur le linac
test du script energie-charge/phase scan avec la bobine de foc a 210
Scans sauvé :

• scan_charge_phase_foc_210A.png : scan charge vs. phase clasique
• scan_energie_phase.png : scan position du faisceau sur LI/DG/SST.01 avec Li/PS/STR.01-H = -1.5A vs. phase 

phase >= 340 : faisceau dificilement différenciable du courant d'obscurité
Si on augmente la force (en valeur absolu) du steerer : faisceau ce déplace vers la gauche de l'image (position en pixel plus faible)
=> Plus le faisceau a d'énergie, moins il est devié, plus la position est grande
PTS a 335 potentielement aberant (pb de focalisation du faisceau
=> Max energy : 300

12h : retour dans le ligne dispersive
Dipole a 157A
Phase section a 114deg (semble minimiser les fluctuation lateral du faiceau)

12h10 :
Faisceau en TL/DG/SST.03
Toute le charge est transmise mais de large fluctuation laterale entraine des pertes de faisceau a certain tir

11h15 :
Test d'injection dans l'anneau :
Dipole d'injection : 7.58A
Septum 90V
Faisceau  visible sur le BPM RI-C1/DG/BPM.02-LIB.03 (BPM2) et un peu sur le BPM suivant aussi (BPM3)

12h17: Allumage du kicker :
Le faisceau atteind les 6 premier BPM

12h20:
Modification courant Septum pour avoir le faisceau a +8.9mm dans le BPM2 (valeurs Théorique d'après MadX)
Imposible... Max atteint : 6mm avec courrant 100V
-> Signal dans le dernier BPM : 1 tour fait !

12h25 :
Mise de courrant dipole de l'anneau a la meme valeur que les dipoles de la TL (157A)
Modification kick du kicker pour améliorer le transport
Large fluctuation (+-2mm) Déplacement en temps du kicker a -7.241µs au lieu de -7.26µs -> augmente le kick induit par le kicker et reduit les fluctuations dans le BPM 3 => plus proche du plateau

13h :
Modification du transport dans l'anneau

14h :
Save recette puis load recette : Perte du faisceau dans l'anneau !!!
-> Le pb viens du kicker/Septum. Le load recipe remet a 0 le current et donc l'alim passe ne mode current_regulation et plus voltage_regulation

15h :
Slava prend la main
Test de script de correction d'orbite avec les deviateurs l'anneau

15h50 : Arret machine pour la visite

16h30-19h Injection tuning. Orbit correction . Beam is not stable. Very difficult to work on the first trajectories in the Ring. At the end of the shift we found more stable conditions. Probably, the reason for energy jitter in the injector should be understood and mitigated.

19h-22h Orbit measurements and correction. No significant improvements in terms of the second turn. Signal at two last BPM drops significantly by 3-4 times.

At sone conditions, scintillator detectore installed near the septum showed the signal spaced by 60 ns => lost particiles at the end of the 1st turn or beginning of the 2nd ?

9:10 Air pressure: 8 bars, water resistivity 6,33Mohm

9:15 Modulator warm-up

9:20 Ronde zone modulateur

9:25 Ronde casemate

9:38 Health check: Pb vide et Alimentation

RI-CI/PS/STR.05-H.01 state=Alarm => Overvoltage => acquittee => OK

Deuc vannes vide fermee autour de la cavite RF =>  Ouverte

9:47 Croise par hasard deux personnes de Dalkia en intervention ...

10:02: Cyclage des aimants (tous dans IHM cycling) => certains aimants vont au dela de la limite de courant lors du cyclage => Cyclage a revoir...

10:20 Modulator interlock (bit 0 and 1)

10:40 OK (interface moduateur plantee?)

10:48 Trig => interlock

Trig@1000V

Pb vide

Trig@1090V

11:10 Scan charge phase

11:14 Chargement recette recipe_recipe_LI_TL_RI_20221021_16_15_04.txt

11:25 Beam found on TL/SST.02 with TL/DP.01=151.7 A

Min dispersion at Phase RF= 111

Changement de recette recipe_recipe_LI_TL_RI_20221020_15_31_20.txt

11:35 On TL/SST.03 the beam looks like Casper!

11:39 Beam in the ring

12:27 Ouverture Iris => 2mm, attenuateur => 330mm

Q=100pC

12h only few turns in the ring. Searching for the problem. Use recipie from Friday 21 October. Does not Help.

Found that QP 12 was OFF => turned ON. Optimized beam. Ri-C2 steerers were OFF.

Ring_saving function for saving orbit params in matlab.

Ring dipole 157-156 - better orbit, less  of beta excitations.

Work with correctors. HCOR=> all  0, orbit exist. Restart orbit correction with SVD to find  the new settings. Need to compare how different to the previous corrector values.

Same in vertical.

RCDS for injection optimisation.

TBT data not stable.

Quads and Sext +-5%

9:55 Intervention synchro en cours pour regler l'ajustement de la phase et la puissandce de la cavite RF.

16:15 Fin intervention synchro: Control de la puissance et de la frequence possible. Controle de la phase manuel seulement suite a changement config. Dephaseur pilote a acheter.

Phase Qmax = 138

Phase Emax = 88

energy jitter

RF Cavity interlock vacuum - reset with DS .

Search optimal phase of RF cavity.

16:50 Closing the scrapper: less losses at injection

Best scrapper setting L=35mm R=9mm

17:30 Demarrage Kicker extraction

Pelser3fault and Pulser4fault on Extraction Kicker => Impossibele to start

9h15 Mise en chauffe modulateur

9h30 Fin ronde casemate

9h40 Resisivite eau B18: 4.71

Air comprime: 7 bars

Pression Eau 3 bars

9:45 Health check: tous problems resolu sauf archivage

9:55 Cyclage aimants

=> Probleme sur EL/PS/DP.01 (Unable to reach set point)

=> Probleme sur RI-C1/PS/QP5, RI-C1/PS/QP6, RI-C2/PS/QP6

10:40 Scan charge-phase.

Laser tres desaligne

11:13 Mesure d'energie 50.1MeV

11:15 TL/PS/DP.01: 162.3A

11:28 Phase RF: 103

Stabilite sur TL/DG/SST.02: Environs 2 taches focales

Stabilite sur TL/DG/SST.03: Environs 0,1 taches focales

11:50 Demarrage EP (avec l 'aide de Maher)

TL/PS/DPi.01 = 7.90

RI-C1/PS/DP.01165A

12:13 Before ring tunig: Freq=500.4138MHz

After tuning 500.479MHz

Apres-midi: Tentative de stockage dans l 'anneau.

Avec la cavite RF nous parvenons a faire plus de tour mais pas a stocker

Etude de l 'effet des fentes.

Demarrage du kicker d 'extraction (cf copie d 'ecran)

16:15 Arret laser + faisceau

===

Shift plan:

1) Try to transport the beam in the TL

2) Check stability

3) Try to transport to EL

4) Try to enter the ring and do several turns

5) Close the slits

5) Try to start the extraction kicker ( For septum settings cf https://elog.lal.in2p3.fr/THOMX/Commissionning/571 )

6) Try to store the beam

9:15 Mise en chauffe modulateur

10:23 Temperature chiller incorrecte

11h Optilization of the beam for injection. Beam is unstable, what is seen fro, the x/y position trends in the TL. Then, from time to time the beam is not injected in the ring causing the jumps in the signal intensity ???

12h  Hayg helped to find the good conditions and we started to inject in the ring but still with the not stable beam.

14h We try to store the beam by optimizing the parameters of the RF cavity => approaching the good storage. Suddenly the beam changed the parameters and we lost injection.

16h Trying to reestablish the injection and perform the optimization AGAIN

17h Difficult to restore the storage: beam from injector is not stable and therefore difficult to see the effect from the ring studies

18h After several studies, we found the proper RF frequency for current ring settings 500.4259 MHz

With ~20 kV obtained storage is about 15 ms measured with the additional electrode on the scope. Libera several times went down and had to be restarted.

The injection is not stable (intensity goes from 0 to max value), which makes it VERY DIFFICULT to optimize the beam storage in the ring. We added two QUAD (4 and 5) to our optimization routine.

After orbit correction the storage was 100 ms with ~20 kV RF and fRF = 500.404 MHz

Studies to be continued. More stable beam is requested from the injector.

19h30 Shift is finished.

9h20 Start modulator, cycle magnets

10h20 Intevention Vincent sur PA

10h40 Scan charge phase

12:00 Tentative demarrage cavite

16h00 Diagnostics switched to 1Hz . We returnd to 10 Hz few moments later.

Mohamed turned Cavity to automatic tuning. RF Amplitude 40 kV . Beam is stored.

Understanding of settings of LIbera with N. Hubert.

Tune measurements with excitation coming from extraction kicker (780V),  images below.

First time horizontal tune is measured (0.36-0.37) , and is close to the model one. Data stored for postprocessing.

9h10 (ND): Mise en chauffe modulateur et laser

9h15 mise en chauffe Chiller (SC)

Démarrage MPS (DN,SC,NE) :

- Mode anneau sans FP impossible car les vannes cavités FP doivent être fermées pour tourner en mode anneau et on ne souhaite pas fermer ces vannes pour éviter de polluer les miroirs.

- Mode ThomX ie anneau avec FP : Le vide dans la cavité FP est en rouge ce qui empêche l'autorisation de tir. Forçage possible du tir cad si on considère que le vide cavité FP n'est pas un problème et si tout le monde est d'accord.

Seuil du vide modifié dans la cavité FP : tir ok si on allume tous les dipoles (LI, TL, Anneau + une valeur d'injection).

NB : Pour les tirs qui utiliseront la cavité FP dans le futur, il faudra que celle-ci soit démarrée avant la fermeture de la casemate.

9:19: Mise en chauffe

10:24 Cycling magnets

10:50 Demarrage faisceau

11:21 load recipe_recipe_LI_TL_RI_all_20230317_15_52_23.txt

Beam to RI-C2/BPM.05

Problem with injection kicker. Not triggering and DS says Charging power supply is OFF. Maher came to solve the problem (14h). Most probably this was a reason of only 1 turn during the last days.

15h Studies on the DPI and SEPT on the injection (1st BPM x-orbit). Compared to yesterday run, we see the good response on change of the DPI ans SEPT. The first BPM is at +(4-6) mm.

Without injection kicker, beam is lost after ~1 turn.

9:10 warm up modulator

10:30: cycling of magnets

10:20 : scan charge phase

11:00 beam in the ring

Attempt to store at 500.02 MHz

Scan RF cavity phase at frequency 500,0117Mhz for different power in cavity

Optimization of dipole current to improve storage after ramping the cavity

Scan RF cavity frequency but results are difficult to interpret

Ccl: we kill the storage (50turns) for 50kV in the RF cavity

9:23 Mise en chauffe

Nombreux pb vide dans health check

Acces casemate pour verification polarite RI-C2/DG/BPM.02 pas de probleme trouve.

Observation des soufflets pres de RI-C2/AE/DP.04 ils semblent legerement deformes mais pres de RI-C1/AE/DP.01 aussi.

11:30 Tentative de demarrage mais probleme temperature eau...

12:00 Intervention Maher. Demarrage possible.

Pb declenchement wavecatcher... Resolu (le serveur etait plante)

14:00 BPM polarity studies

15:30 Measure frequency

16:30 To to steer the beam around the chamber

18:20 Stop

===

Programme de la prise de données du 8/06:

0) During warm up:

0a)check physically BPMs where there seem to be a polarity issue (needs 2 persons, a battery and a multimeter).

0b) CHeck vacuum chamber around RI-C2/AE/DP.04

1) Transport to TL/FC.01 (TL/DP.01 off). Record FC  signal

2) Transport to TL/SST.02 and TL/BPM.02. Record BPM adc signal while closing dispersion (for Mouad's studies).

3) Transport to EL/FC.01. Record FC  signal and compare with TL/FC.01. If needed swap filters and compare again.

4) Activate position feedback on TL/BPM.02

5) Inject in ring, no RF power. Record with high res oscilloscope travel time for different magnets settings. If needed use a mixer.

6) Study the effect of correctors around RI-C2/AE/DP.04

7) Use extraction kicker scan to measure beam travel time after several turns

8) Finish BPM polarities study

9) Repeat (5) and (7) with different RF powers at 2 different frequencies (500.0202MHz and 500.4MHz). Look at oscillations on TbtX and TbtY vs frequency.

 

9:45 Git pull

Test des interfaces... OK

Probleme sur les ecrans du compte operateur ThomX (4x1 ecran) meme apres redemarrage => reconfiguration

10:10 Mise en chauffe

Interlock sur les aimants vu pendant le cyclage. Resolu.

11:30 Faisceau

12:05 Allumage cavite anneau (MEK)

12:15 Perte faisceau...

Apparement le PA avait disjoncte. Intervention MO.

13:00 Retour faisceau

Prise de données TL/FC01

13:30 Transport dans EL, essaie d'amélioration du transport : on a réussi à transporter environ 1/3 de la charge 

Prise de données dans EL/FC01 

15:00 Stockage dans anneau, optimisation 

16:00 Prise de données pour étudier les pertes dans les fibres. 

Prise de données des pertes:

-sans faisceau, avec juste kicker d'injection, septum, ou kicker d'extraction

-sans faisceau, avec tous les EP : obtenir bruit de fond

-avec faisceau, avec juste kicker d'injection, septum, ou kicker d'extraction 

-avec faisceau: prise de données avec différents timing pour le kicker d'extraction => extraire le faisceau pour comprendre le timing de l'acquisition et observer les pertes avec différents timing de d'extraction

9:00 Warm up machine

10:40 Start the beam

10:50 Scan charge phase 

11:15 Storage in  ring

Recipe: recipe_recipe_LI_TL_RI_test_20230629_16_44_31.txt

11:30 Studies of losses with fiber inside ring 

12:30 Start RF cavity

13:00 Scan phase cavity

8h50 Start of the modumator and all subsystems

PC client 1 was frozen => we restarted

10h20 HV on 1215 V

RF gun phase 28 dg., Att. 0.0 dB, Charge -106 pC

The beam shape at screen TL/DG/SST.01 is very strange. Big change. Try to allign the QP1 QP3

Steerers: H [2.48 -4.46]; V [-1.86 2.29]

Section Att. 2.77 dB, Phase 208,  TL/BPM2 X= 0.1

11h45 Ring injection. Ri-c2/ps/str.06-h.01 and   Ri-c2/ps/str.06-v.01 tango servers were off

12h59 Measure Beem energy with TL Steerer: 53.2 MeV (screenshot), TL/BPPM2 X about zero.

12h53 Start ring RF

14h0 Section chiller 'off' (unknown reason), Energy start to drop . Switch to 'on'.

15h27 Modulator on Standby

16h30 HV on.

16h37 Modulator 'off' voluntary. Unknown reason.

17h55 HV 'on' 1215 V, Section Phase 217, -125 pC

18h30 'access controle' to install shunt resistances of 33 Ohm at four magnets (close placed).

18h55 HV 'on' 1215 V, Section Phase 217, -125 pC

Orbit at straight sections goes down on 2 mm.

19h13 Stop ThomX