8h: mise en chauffe de la machine (Frigo/chiller, laser, modulateur et cyclage aimants).

9H demarrage faisceau

Charge gun 110pC

10h go to the ring => optimisation Finished

Waiting  from X ray

feedback injection:

/data/shared/commissioning_scripts/Linac/Alignements/feedback_linac_injection.py

/data/shared/commissioning_scripts/Linac/Alignements/feedback_ring_injection.py

15h stop machine pour check fente ligne X

17H redemarrage machine

8h10: mise en chauffe machine en remote (Frigo/chiller, modulateur, laser, cyclage aimants)

injection dans linac demarrage du feedback linac
Q linac 100pC
phase canon 28°
phase section 202°
att section 2.48dB

10H injection dans l'anneau établie HV RF ring 150KV phase RF 36.5°

11h42 RF Gun phase is 24 dg. Section phase is 199 dg. Att. 2.52 dB, TL/BPM2 X=3 mm, Charges: -100 pC, -93 pC, -90 pC, linac steerers: H [0.48 -2.75], V [-2.92 3.3], RF Cav 150 kV, phase 35 dg. Sum of TBTSum is 1.3e11, X ray photodiode currnt around 22500 pA 

15h35 RF Cav. set to 200 kV, phase 35 dg.

18h00 : charge drop during this shift day. May be laser needs to be re-alligned properly. 

19:00 : canon non adapté à 31.60 °C 31.50 mieux mais pas parfait. à Surveiller, réfléchis très chahuté.

7h30: mise en chauffe en remote (Modulateur, frigo/chiller, laser, cyclage aimants)

8h35 HV is 'On'
base recipe all_2025225_14_52_23
10H
changement température canon consige à 31.7°C => moins  de réfléchi => retour à 31.6°C
Faisceau stocké dans anneau: Phase canon 24° 85pC Phase section 203° att section 2.43dB, TL/BPM2 TBTX=3mm,
RF power 200KV, Phase 35 dg.
FP power 90KW
T canon 31.55°C

 

7h45: mise en chauffe en remote (Frigo/chiller, laser, cyclage aimants)

Le Modulateur ne répond pas et ne veut pas passer en STANDBY ==> need to go on site

Problème d'intelock sur le refroidissement d'eau ==> redémarrage du PC modulateur ==> problème résolu ==> mise en chauffe à 8h30

9;35 Modulateur en trig

Receipt from 20250226_15_02_26

9:57 Beam in ring, Xray

RF Gun phase is 25 dg., Sect. phase is 206 dg., Att. 2.56 dB, TL/BPM2 SPx=2 mm. Charges from BPMs: -85 pC, -83 pC, -91 pC Linac steerers as in the receipt.

RF Cav. Volt. 200 kV, 35 dg.

11h45 Sum of the TBTSum =1.15e11, FPC power is 88 W, I3 current around 20000 pA, the kicker voltage was set to 9368 V (about 11h10) to rise X ray flux

12.30 RF Gun phase was set to 22 dg. to rise flux to 20000 pA, TL/BPM2 SPx=3 mm

15h42 The gun phase was set to 10 dg. sect phase 203 dg. with TL/SST2. TL/BPM2 SPx=2 mm

17:42 Stop ThomX

7h40: mise en chauffe en remote laser PC

9h : mise en chauffe modulateur, chiller/frigo

9h10 :  accès casemate pour réalignement laser PC

1- Conditionnement du Canon à 16 dB, on gagne un peu en vide. 

2- sautes du faisceau : vérification du signal avant la section. 

Signal visible sur les positions, voir les 2 images, avec ou sans steerer. 
hypothèse :

- si pas de saute sur le BPM-LI : le soucis est après le BPM, ou bien au niveau du BPM 
- sauf si le BPM n'est pas assez sensible, ou bien pas assez de recul pour un signal perturbé en amont. 

l'amplitude du signal semble aussi varier avec la taille faisceau. Pas de mesure systématique. 

18h45 : On ferme  

08h53 Start ThomX

11h10 The oscilloscope installed in the bunker

11h11 HV is 'On'

11h45 The beam is in the ring

12h10 The modulator set to the Standby mode. Access to the bunker

12h24 HV is 'On'

12h30 RF Gun Phase is 15 dg., Sect. phase is 204 dg., Att. is 2.503 dB, TL/BPM2 X= 4 mm, Charges: -108 pC, -108 pC, -120 pC  

12h35 Feedback on linac injection was started

13h00 Measurement of the stability of the temporal position of electron and photon bunches at the IP. RF Cav. at 200 kV, Phase 35 dg.

13h07 The linac was adjusted: RF Gun phase 10 dg., Sect phase 199 dg. Charges: -100 pC,-99 pC, -110 pC, Inj. qual. 0.965, Storage qual. 0.802

14h26 The linac was adjusted: RF Gun phase 11 dg., Sect phase 203 dg. Charges: -99 pC,-99 pC, -109 pC, Inj. qual. 0.984, Storage qual. 0.747, X ray flux I3=25000 pA

Phase between electron beam and FP photon have been done (attachements will come later) (Electron beam is a pickup (150ps fall time) at the IP and Photon beam  is a photo diode (300ps rise time) at the FP cavity output).

time jitter is measured as the time difference between the two ulses at a fixed treshhold of 10mV)

measurements show a 33ps FWHM jitter (15ps)   as long as the FPC is locked on the 500MHz . the jitter mainly come from FPC (see post FPC : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/416)

15h35 The linac was adjusted: RF Gun phase 19 dg., Sect phase 212 dg. Charges: -105 pC,-104 pC, -115 pC, Inj. qual. 0.988, Storage qual. 0.786,

17h45 Stop ThomX

9:10 Debut alignement

10:30 Mise en chauffe machine

10:45 Fin alignement

11:30 Demarrage

Puisance reflechie tres forte... On redescend en tension.

Pas de laser sur la camera. Le voyant "Danger laser" n'est pas allum'e en salle laser.

12:45 Toujours pas de laser, machine mise en standby.

Probleme gate_int?

13h50 Laser is back!

On parvient a transporter jusqu'a la camera streak mais on ne voit pas le signal sur la camera...

Realignement...

Toujours rien...

16h50 Arret faisceau

14h31 Start ThomX/ Modulator, Frig, Laser

14h37 Cycling all magnets, Chillers started

15h34 HV is 'On'

There are problems with the servers. Therefore, some tools are not working: Trends,  Camera Laser and so on.
Servers restarted, we also used script from Kevin to restart properly DSs.
Beam Charge : 70 pC !!! RF gun phase is set to 109 dg.

17h30 Linac steerers H [0.67 -2.77], V [-2.95 3.19], RF Gun phase   214 dg. Att. 2.47 dB.

Measure dispersion in the TL

18h45 QP4 - QP7 set to 0

Screenshots of TL orbit for different Att.

18h53 HV is 'OFF', Stop thomX

7h50 : mise en chauffe machine (modulateur, frigo/chillers, laser, cyclage aimants)

**** Programme de la journée ****

- Mesure spectre angulaire (déplacement spectromètre dans le faisceau de rayons-X)

- Mesure spectre sur l'axe à différentes longueur de stockage

12h38 Beam is in the ring. X ray spectrum measurements. Parameters:

RF gun phase is 103 dg., Sect phase is 219 dg., Att. is 2.499 dB, TL/BPM2 X=+3 mm, Charges; -106 pC, -103 pC,-114 pC, the ring RF 150 kV, Phase -13 dg. 

12h45 Vacuum interlock V1

13h12 RF gun phase is 97 dg., Sect phase is 212 dg., Att. is 2.449 dB, TL/BPM2 X=+3 mm, Charges; -104 pC, -105 pC,-115 pC, the ring RF 150 kV, Phase -13 dg. TBTSum=1.4e11

08h27 Start ThomX: Modulator, Laser, Frig

08h34 Chillers were started, cycling al magnets

12H ready to start beam ( 13H30)

alignement laser done (alignement to do)

13h20 HV is 'ON'

13h31 RF Gun phase is 95 dg. the laser iris is 1.3 mm, the laser att. 340, RF Gun charge is -120 pC (the laser spot position was Hor. 4.282 mm, Vert. 3.327 mm ), screenshots of Li/SST1

13h35 laser spot alighment started at RF gun phase of 145 dg.

13h36 New position of the laser spot is: Hor. 4.282 mm, Vert. 3.327 mm 

13h44 the modulator was put into standby mode, access to the bunker

14h13 HV is 'ON'

Two plots beam on LI STT 0.1

new receipe all 2025 03 13  14 46 52 

Charge 120pC

RF power 150KV

17h12 RF gun phase 92 dg., Sect. phase 211 dg. I TL DP =159.3 A, TL/BPM X=4 mm, RF cav. 150 kV, phase -15 dg. Sum of TBTSum =1.8e11, Charges: -142 pC,-140 pC, -152 pC, I3 25000 pA

17h31 Adjusting ring lattice to rise X rays. I3 max was 45000 pA

18h29 Stop thomX

08h28 Start Thomx: Modulator, Laser, Frig

08h33 Chillers were started, cycling al magnets

9h00 MPS affichage: Arret d'urgence... Appel Nourredine, probleme resolu.

9h30 Laser aligned on streak camera

Fix technical issues.

11:00 First measurements with streak camera

13:00 Viktor repotimizes the linac.

New measurements.

Measured length 9.2ps, including ~1ps due to spot size.

Shot to shot jitter ~2.9ps (over 100 shots).

16h10 Vacuum interlocks V1

New measurments, the phase has drifted. Bunch is longer.

17h00 Stop ThomX

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

*** programme ***
     - préparation de la machine pour la seconde session d'imagerie (du 19 au 21 mars)
     - mesure et optimisation de la longueur de paquet dans le linac

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

09h20 HV is 'ON'
09h30 RF gun phase is 10 dg., Sect Phase is 209 dg. Sect Att. is 2.57 dB, Charges: -107 pC
09h45 the modulator was set to the standby mode. Access to the bunker

Mesures X-rays in X-Hutch

 ** Verification Photonic Science avec le cable "Soleil" : ok

 ** Mesures tailles transverses source (H et V):
      Fermeture partielle des fentes 1
      Det Photonic sur bras detecteur (a 280 mm du zero hexapode)
      Prise d'images des bords de la fentes (a differents voltages cavite RF, de 50 a 280 kV)

19h10 Stop ThomX

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

*** Programme de la 2e semaine de prise de données imagerie X ***

7h40: mise en chauffe de la machine (modulateur, laser, frigo/chiller, cyclage aimants)

*** Programme imagerie X ****

- radiographie en contraste de phase

- Tomographie en contraste de phase

8h40 HV is 'On'

10h13 Beam in the ring. RF Gun phase is 233 dg., Sect. phase is 209 dg. Att. sect. is 2.54 dB, TL/BPM2 x=1.5 mm. RF Cav at 200 kV , phase -38.5 dg.

The FPC phase was adjusted to maximize I3 current (between 25000 and 30000).

10h46 Charges: -145 pC, -145 pC, -160 pC. Have a growing trend.

10h50 The RF gun phase was set to 226 dg. to restore storage and x-ray. The injection is very unstable.

11h43 RF gun phase 219 dg. Sect. phase 209 dg. RF cav. phase -43.5 dg. I3 curr. from 40000 to 50000

12h27 RF gun phase 218 dg. Sect. phase 207 dg. Att. 2.48 dB, TL/BPM2 X=1.5 mm to 2 mm, RF cav. phase -43.5 dg., 200 kV, I3 curr. around 40000 pA

16h45 RF gun phase 215 dg. Sect. phase 209 dg. Att. 2.51 dB, TL/BPM2 X= 2 mm, RF cav. phase -46.5 dg., 200 kV, I3 curr. around 40000 pA

17h28 RF gun phase 214 dg. Sect. phase 211 dg. Att. 2.56 dB, TL/BPM2 X= 2 mm, RF cav. phase -46.5 dg., 200 kV, I3 curr. around 40000 pA

18h57 Stop ThomX

7h40: mise en chauffe de la machine en remote (modulateur, frigo/chiller, laser, cyclage aimants)

*** Programme de fin de semaine ***

matin : finalisation de la prise de donnée de la session imageries X

après-midi : libre pour continuer les actions sur la machine (passage 61.5MeV ?)

08h58 HV is 'On'

 RF Cav at 100 kV, phase is -39 dg.09h30 Beam is in the ring. RF gun phase is 240 dg. Sect phase is 206 dg. Att. sect. is 2.51 dB, TL/BPM2 x=2 mm, charges: -110 pC, -109 pC, -120 pC,

Linac steerers: H [0.75 -2.81], V [-2.46 2.89]

09h38 Vertical scan by FPC table

10h45 RF cav. at 200 kV, phase is -39 dg.

13h17 RF cav. at 200 kV, phase is -42 dg. RF gun phase is 235 dg. Sect phase is 209 dg. Att. sect. is 2.55 dB, TL/BPM2 x=3 mm, charges: -110 pC, -110 pC, -121 pC,

14h00 Problems (micro blackout). Modulator turned off, dipoles turned off, RF resonator turned off, 500 MHz signal missing. Trying to restart.

15h03 HV is 'ON'

16h46 Stop ThomX

08h00 ThomX started by Maher

09h50 Problem with vacuum in the septum. TL-V3 and EL-V1 are closed.

ThomX configuration changed to 'Linac'.

0955 Laser is 'On'

10h03 Problem with vacuum was fixed. ThomX configuration changed to 'ThomX'.

10h05 Cycling all magnets

10h10 HV is 'On'

10h20 From time to time TO-V3 and EL-V1 close. Septum vacuum is 2.6e-10

Septum power supply is interlocked

10h55 , RF gun phase is 235 dg., Sect. phase is 216 dg., Att. = 2.38 dB, TL/BPM2 X=0.2 mm , Charges: -91 pC, -90 pC, -98 pC, Linac steerers: H [0.84 -2.88], V [-2.47 2.8], receipt from 20250321 12:30:52

11h27 V6 interlocks

11h49 RF gun phase is 225 dg., Sect. phase is 209 dg., Att. = 2.46 dB, TL/BPM2 X=0.2 mm

12h46 to 13h10 Emittance measurements at 50 MeV

13h Problem with Pulsed Elements => fixed by Kevin and Maher

13h30 Tuning of the linac for 70 MeV, emittance measurements.

14h Check the machine at 50 MeV

15h25 The modulator at standby mode. Access to the bunker.

15h45 61.5 MeV receipt from 14/02/2025

Synchronization problem,

17h00 RCDS on injection

17h19 RF Gun phase is 224 dg., Sect. phase 221 dg. Att. 0.975 dB, Charges: -107 pC, -105 pC, -115 pC. TL/BPM2 X=1 mm, RF cav. 100 kV, phase -34 35 dg. manual phase sfifter 7809, phase shifter to measure amplitude 6759. Receipt 20250331 17:12:34

08h42 Start ThomX: Morulator, firg, laser

08h47 Chillers, cycling all magnets

10h40 HV is 'ON'

10h58 RF Gun phase is 225 dg. Correctors H [0.82 -3.05]; V [-3.1 3.28], Sect phase is 220 dg., Att. 0.975 dB, Charges: -95 pC, -94 pC, -103 pC

11h12 Beam in the ring RF cav. at 50 kV, phase -34.5 dg.,  receipt from good 20250331 18:08:02

11h25 Interlock by Radioprotection in the laser room

11h48 Fixed by Atanas, HV is 'ON', RF gun phase is  220 dg., Sect. phase is 224 dg. Linac correctors H [0.82 -3.05]; V [-3.29 3.19],

12h06 emittance measurements by QP3, QP1 and QP2 at zero hor. 3.3 mm*mrad, vert. 2.9 mm*mrad

12h19 beam in the ring TL/BPM2 X=0 mm

13h20 Going to 40 MeV. Sect. Att. set to 4.095 dB, Sect. phase is 205 dg. TL/DP current set to 125.38 A, Linac steerers H [1.19 -3.25], V [-3.05 3.47]

RF cavity 50 kV, Freq=500.11896 MHz

16h42 RF cav. at 100 kV, Phase -7.5 dg. receipt 20250401 _15_25_35, RF Gun phase 219 dg. Sect. phase 201 dg. Att. 4.084 dB, TL/BPM2 X=4.5 mùm

17h16 Stop ThomX

Freq. for RF Cav. set to 500.10051 MHz (should be 500.10045 MHz)

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

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