Matin: Alignement.

Apres midi tentative de voir du faisceau en salle laser.

Faisceau tres faible.

On trouve deux iris dans le chemin optique. Après ouverture, le chemin optique n'est plus bon.

Realignement.

17:35 Arret machine

8h05: mise en chauffe en remote de la machine (modulateur, frigo/chiller, laser)

==> cyclage aimant plante, donc aimant non allumés ni cyclé.

9h All keys are in vertical position. Totes rondes sont tombees. We need help to restart.

Kevin and Vincent came to help.

All systems were started.

We switch on the RF and found problem with the reflected RF power in the gun. Checked the temperature and found that chiller failed to set the proper temperature.

10h10 Restart frigo+chiller

Several restarts but the temperature does not rise. 

After several attempts it is OK

11h Problem with laser, we do nto see the dark current on the ICT1; Try to understand the reason

Laser was not aligned. Kevin helped.

We restarted all the Liberas as they were not in a good state. 

The phase shifter DS was OFF.

11h50 Finally we have the beam in the ring

problem with the RIC1 STR 4 VERT It does not take the command and stays in the orange state. Steerer resistance is 18 Ohm.

12h02 F Gun phase 283 dg. Sect Att. 2.32 dB. Sect. phase 218 dg. Beam charges about -100 pC. Charge devices do not show values

Restart all Liberas because of reading problems

Srudies of the RF freq change. it is clear that it changes the phase of the RF cavity. Not clear if it is OK for th e measurements.

=> It is very important to measure the deltaPhase introduced by the RF transport lines in order to proceed with the measurements.

The vert cteere in the ring shuld be checked/repaired.

Stop for lunch and steerer reparation.

13h20 Jean-Noel came to help and check the steerer. Overvoltage on the PS. Access to the casemat. 

14h11 RIC1 STR 4 VERT fixed by Jean-Noel

14h14 HV is 'ON'

15h Studies of the vetical orbit and its compensation

17h Optics measurements. 

8h40: mise en chauffe en remote (frigo/chiller, modulateur, laser)

9h30: ajout de graisse sur le verrin du shutter Xline dans la casemate

9h45: le klystron ne passe pas en HV, gros problème de perverance aussi (impossiblde de passer à 1215V)

** Le générateur rigol ne répond plus ==> adresse IP fausse (anciennement celle de camera sst spare) ==> rigol en DHCP nom reseau "dephaseur-sy" = "192.168.229.164"

** Cavité FP instable gros délock ==> impossible de faire le programme de shift.

** Problème de delock visible sur l'accéléromètre ==> travaux devant sciences ACO totalement corrélé avec les délock. 

18h 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

08h30 ThomX warm-up

08h37 Cycling all magnets

10h20 HV is ON

10h30 Beam is in the ring

Demarrage machine 9H

test cyclage: OK (relecture courant parfois NAN)
Correction des fenetre d'intégration de mesure de charge des ICTs
Modification des coefficients des BPM TL 1 2 3 4 pour prendre en compte les  attenuations des cables  
Attention les coefficients doivent etre rechargés à chaque redemarrage du libéra
Libera 2 (TL) plante très souvant
 Arret machine 17h45

09h35 Warmup ThomX

09h40 Cycling all magnets

09h50 Start Chillers

09h48 HV is ON

The reflected wave from the RF gun seems too high. Trying to set it to 27°C, but the clarinet temperature rises to 30.4°C and does not change.

10h15 HV is OFF

10h27 Stop the Gun  chiller.

10h50 Start the RF Gun chiller. The temperature is constantly rising.

11h25 Kevin reloaded the RF gun chiller. All is OK

17h00 Beam is in the ring. Receipt was loaded from 10/04/2025 17:32, RCDS, Good storage, Orbit adjustment to measure bunch length with MRSV. There is the light on the camera. Receipt saved 09102025 17:07

Emittance measurements during the shift as well, at  QP1, QP2 QP3 with low charge 70pC(0.8 mm) normal charge 100pC(1.3mm) and (300pC)3mm : here we wanted to see the affect of asymetric laser beam as well. 
QP4-Scan also but scan is strange (and long ... 1s expo to see something) 

QP3 scan

vary Soleno
Iris 1mm ATT 400 (150 pC)

7h55: mise en chauffe en remote (laser, frigo/chiller, modulateur, cyclage)

==> Nouvelle interface de cyclage, on ne voit plus la progression ou l'état des éléments. (impossible de savoir si le cyclage à bien fonctionné)

10h: recette chargée 50MeV 20251010_15_48_41

Commentaires machine :

* pour un bon stockage l'énergie n'est pas bonne (157.3A sur TL/DP pour etre à 0 TL/BPM.02), position vertical TL/BPM.02 ~ -4mm (stockage possible avec +- 2A sur TL/DP)

/!\ l'orbite n'est pas "flat" à l'IP (comparaison avec chargement de la recette "50MeV_100pC_flatVERTorbit_withEL_20250717_10_58_38.txt"), l'orbite n'est plus "plate" avec l'ancienne recette. 

* probleme dans la EL, le faisceau n'est pas extrait correctement avec la nouvelle recette. 

/!\ probleme BPM/EL, le BPM n'affiche plus la position du faisceau !

* comparaison orbite du matin et de l'après midi, l'orbite change en X pas en Y.

* décalage du délais septum de 4us pour mettre l'impulsion des kicker à peu pres au sommet de l'impulsion ==> il faut désendre le septum de ~ 2V dans ce cas (97.13V --> 95.33V)

** recette sauvée sous : 50MeV_100pC_MRSV_20251014_18_22_53

* mise à jour du DS "DS_Ring_RF" pour faire les changement de fréquence anneau et phase au meme endroit.

*** Prise de donnée ***

- échantillon chocolat : le plus riche en Cd ne fait pas appaitre de pics !

- Nb présent dans échantillon d'un patien "sain". 

7h30: mise en chauffe en remote (chillers/frigo, laser, cyclage)

==> impossible de passer en Standby sur le modulateur ==> mail envoyé à Maher.

8h30 We inspected the modulator, made the rondes. The error (status 8 bit) remains. Need for help from Maher. problem: Modumator PSS.

09h12 Maher started the modulator (there was problem with cooling)

10h30 HV is ON

10h44 RF Gun phase is 228 dg Laser Att. 280, Charge device does not work properly

11h18 RCDS on injection, Beam is in the ring

11h20 Modulator went to OFF then start to warm-up

The RF cavity DS  can not read ring RF frequency

12h28 HV ON

Restarting the beam

Working on the WP 50 MeV, orbit correction after dipole rotation. Recette:

TL and EL tuning and measurement of the energy spread.

Beam cut issue in EL investigations.

Optics studies. LOCO.

19h50 STOp THOMX

7h45: mise en chauffe en remote (modulateur, laser, frigo/chillers, cyclage)
8h45 : mise en route Modulateur
recette "50MeV_smallorbit_with EL_20251016_19_49_25.txt"   fichier VIDE
pB RI-C2 QP2 => serrage des cosses sur le Qpole +redemarrage serveur => résolu
alignement Quad
Feedback ring injection ON
RF ring cavity   150KV (phase 3° freq 500.100450MHz)

10h26 RF Gun laser state went 'Fault'

La streak a ete "importee" en sdc, elle est maintenant pilotable en sdc

Programme : spectres a different temps d'extraction

** Calib du CdTe avec feuille de Sn

** Mapping avec Script fwhm 25 positions CdTe  (-40 a +40 environ)

** Prise de spectres autour de la position zero mapping

** Prise de spectres a 12.5 Hz a differents temps d'extraction (de 10 ms a 70 ms)

** Prise de spectres a 1.5 Hz   a differents temps d'extraction (10, 50 et 100 ms)

08h32 Warm-up ThomX: Modulator, Laser, Fridge

08h37 Chilers were started, cycling all magnets

09h38 HV is ON

The receipt loaded: recipe_recipe_LI_TL_RI_all_20251023_14_56_13

10h16 The beam is in the ring. RF Gun phase 233 dg., Sect. phase is 200 dg., Att. 2.34 dB,  linac steerers: H [0.75 -2.98], V [-2.63 3.25], Charges: -101, -100, -102 -102 pC (from BPMs), TL/BPM02 X= -3, RF cavity 100 kV, phase 14 dg.

11h18 Laser feedback was reset.

phases were reset RF Gun 256 dg. Sect. 211 dg. RF Cav. 9.5 dg.

Scanning TL/QP3 at QP1=QP2 = 0

Scanning TL/QP3 at QP1= -0.17 A, QP2 = 3.5 A

Scanning TL/QP1 at QP2=QP3 = 0

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

08h45 Chillers were started, cycling all magnets

09h45 HV is ON

09h49 HV was set to 1215 V

10h15 the receipt recipe_recipe_LI_TL_RI_all_20251023_12_06_10.txt was loaded, linac phases, section attenuator and steerers was adjusted

10h20 The beam is in the ring W/O RF. RF Gun phase 215 dg., Sect. phase 207 dg., Sect. Att. 2.47 dB, TL/BPM02 X=-2mm, Laser Att. 274,Charges (BPMs) -110, -109, -80, -80 ???

10h33 Data taking for different TL/BPM02 X

10h50 RF 100 kV, Phase 11 dg. YL/BPM02 x=-3 to -4 mm, Very good storage, but losses in the TL,  Check alignment

11h11 RF gun phase 202 dg. Secr. phase 206 dg. RF phase 3.5 dg. All charges are about -100 pC

11h27 TL/BPM02 X ==> 0 mm to minimize Sync. osc. Hor. Tun 0. 159

11h41 Hor. tun ==> 0.169

11h56 BBA

12h21 RF Gun phase ==> 207 dg.

12h32 Hv was set on standby

13h44 HV is ON

14h14 RF Gun phase ==> 211 dg.

16h52 Stop ThomX

08h17 Warm-up ThomX: Modulator, Laser, Fridge

08h24 Chillers were started, cycling all magnets

09h18 HV is ON

09h21 HV 1215 V

The receipt recipe_recipe_LI_TL_RI_all_20251023_12_06_10.txt was loaded, linac phases, section attenuator and steerers were adjusted

10h10 RF Gun phase 202 dg., Sect Phase 206 dg., Sect. Att. 2.57 dB, Linac steerers: H [0.61 -2.91], V [-2.63 3.21], Laser Att. 274, Charges (BPMs): -94 -94 -97 -97 pC TL/BPM02 X = -1 mm

10h20 Beam in the ring. RF cavity 100 kV, phase 6.5 dg. 

the receipt saved: recipe_recipe_LI_TL_RI_good_20251030_10_50_55.txt

The good receipt saved to references 50MeV_last....

17h10 Stop ThomX

Shift Program

• Start the Archivage OK

• Align 50 MeV beam in QP1 QP3 with Kevin script

• TL_bpm2 : adjust espread and put beam at x=0

• Store the beam in the ring with an orbit as flat as possible around the IP

• Make a vertical FPC scan - Then put the table at maximum OK

• Align the CdTe spectro on the on-axis position, approximatively by eyes with the Photonic science camera ==> take a spectrum OK

• Change gun phase only  OK

• Change section attenuator only ==> idem (positive, "nominal", negative, "nominal") ==> 4 spectra  OK

• Change the section phase only ==> idem ==> 4 spectra  OK

08h30  Warm-up ThomX: Modulator, Laser, Fridge

08h36 Chillers were started, cycling all magnets

09h33 HV is ON 

09h34 HV set to 1215 V RF Gun phase is 188 dg.

11h09 Help needed! Something is wrong with the TL bends.

11h44 Something is wrong with the section attenuator. Reducing the attenuation results in a decrease in the section's output power.

12h15 OK, finally we got  it. RF Gun phase 182 dg. Sect. phase 298 dg. Sect. Att. 0.59 dB, 50 MeV, Li/HFI/ATT.01-MOT.01 ==> 311 steps Sect. Output -0.123 V

Sect. Output -0.123 V Mot. pos. 1699 steps but Sect phase = 211 dg. Calc/Li/HFI/ATT.01-MOT.01 is not working properly.

12h31 Beam is in the ring W/O RF

12h35 RF 100 kV

BBA Hor.

BPM Ind.  Offset

[1 1] ==>-0.129

[1 2] ==>0.017

[1 3] ==>-0.722

[1 4] ==>0.425

[1 5] ==>-0.022

[1 6] ==>-0.139

[1 7] ==>0.091

[1 8] ==>0.272

[1 9] ==>0.375

[1 10] ==>-0.022

[1 11] ==> -0.272

[1 12]  ==> -0.400

08h34  Warm-up ThomX: Modulator, Laser, Fridge

08h40 Chillers were started, cycling all magnets

09h40 HV is ON but cannot trig because the interlock on low SF6 pressure. Assistance asked.

10h40 Modulator set to standby, because nobody responded.

SF6 pressure was fixed.

14h00 Beam started. The laser iris was set to 2 mm because at 1.3 mm beam was with two cores at the linac exit.

Receipt used: all_20251106_13_58_04

RF gun phase 233 dg. Sect. phase 211 dg., Motor position of the sect. Att. about 1700 steps to get 50 MeV. Charges (BPMs):  -110 pC, -110 pC, -113 pC, -113 pC. Do not use calc/li/hfi/att.01-mot.01 to adjust section RF power in dB, use li/hfi/att.01-mot.01 instead.  Level of a signal from the section output should be about -0.125 V at 50 MeV.

14h16 Beam is in the ring, RF 100 kV. TL/BPM02 X=-1mm.

BBA for a vertical direction.

BPM V [1 1] V offset = -0.054 mm

BPM V [1 6] V offset = 0.165 mm

BPM V [1 7] V offset = 0.025 mm

BPM V [1 12] V offset = 0.366 mm

16h29 Stop ThomX

15h09 Cycling all magnets

15h12 HV is ON

15h15 The modulator was set to standby

15h34 HV is ON

Tests on Ring + Streak camera to measure the bunch length. Triggering was not perfect (many jumps, even with help from Daniele)

Laser charge is now lowered (max around 300 pC) , should be realign soon.

18:40 stop

7h50: mise en chauffe en remote de la machine (laser, frigo/chiller, cyclage)

==> le modulateur ne répond pas aux commandes (il est peut être en local) ==> Ok le modulateur était bien en local (Maher est intervenu)

*** intervention laser (9h 11h) ***

* Pas de perte particulière sur la ligne observée, le faisceau  ne semblait pas non plus avec une forme dégradée. 

* nettoyage des optiques dans la salle laser, ajustement du téléscope de la casemate (pas d'effet notable mise à part une perte d'intensité sur la caméra sans perte de puissance côté canon)

** Mesure Laser PC **

- Sortie Laser: 250 uJ (en baisse)

- Injectée ligne transport: 235 uJ

- Sortie ligne transport: 188 uJ

- Sortie Iris (ouverture max): 175 uJ

- Injectée canon (iris max, 420 pas atténuateur): 105 uJ 

- Sortie iris (1.3mm): 51 uJ

- injectée canon (iris 1.3 mm, 420 pas) : 43 uJ

9h Intervention laser

Intervention pour realignement el/dg/sst.01

11h Fin interventions demarrage machine

12h Quad scans

14h Measures TL

16h Stop ThomX

8:30 : demarrage à distance 
 

12:10 : QP7 Scan 1 (Phase section 210) optimum sur ligne dispersive 
12:12 : QP7 Scan 1 (Phase section 213) largeur spot diminue 
12:15 : QP7 Scan 1 (Phase section 215) largeur spot Augmente  

Distribution du laser donne un faisceau avec plusieurs coeurs (sur QP7 etc ou lors de quad scans).

comparaison taille sur écrans aux prédictions de BMad. 
ensuite : nouvelle lattice "Bmad" appliquée sur ThomX --> "Mac" -->    recipe_recipe_TL_all_Mac_20251119_18_02_10.txt  
Mac : car dispersion Bmad "matchée" à l'anneau en M .... 

BMad fichiers mis à jours sur /data/shared

Suite à faire :

- Mesurer la dispersion. 
- comprendre pourquoi en Y on n'est pas très bon (QP7) 
- revoir les mesures de twiss : les distributions ne sont pas très bonnes pour le quad scan