08h00 ThomX was started

Goals: Emittance measurements, ring optics study

10h00 HV was 'ON'

RF Gun phase 240 dg. (the previous day was 190 dg.), Sect. Att. 2.42 dB (the previous day was 2.61 dB) Laser Att. 280, Charge -106 pC

Emittance measurements vs RF Gun phase for 109 pC, 208 pC, 360 pC

Ring optics study.

17h20 ThomX was stopped.

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

08h40 ThomX was started: Modulator, Frig, Laser

08h45 Chillers were started, cycling all magnets

09h56 HV is 'ON'

10h14 There is problem with Wavecatchers (see screenshot). Even dark current is absent

Wave catcher power supply 2 (5V) is dead... changed temporaly with a spare. (solved)

There is problem with the section phase shifter

12h10 All problem fixed, beam in the ring 50 MeV

Going to 40 MeV

13h25 Sect. Att. 4.03 dB, Phase 203 dg., RF Gun phase 166 dg. Charge -85 pC, receipt 20250613_13_25

Going to 43.7 MeV

14h20 Sect. Att. 3.5 dB, Phase 210 dg., Gun phase 162 dg  TL/BPM2 X=-1.5 mm, Receipt 20250613_14_19_57

16h00 35 MeV. Sect Att. 4.98 dB, phase 202 dg. Receipt for the linac 

16h10 HV  on standby Access to the bunker

8h49 allumage modulateur, chiller, laser

10h00 Beam ON

Prise de données Cf images jointes.

1 degree Celsius ~ 3.46 deg phase

15h04 modification phase canon à 281 pour regrouper le faisceau sur TL/BPM2

16:55 Stop ThomX

Vérif position laser photocathode :

--> bouge de 1mm en Y et 0.2 en X

Nouvelle position:

• 5.003
• 4.553

--> bouge de <0.3 en X et 0 en Y. 

Qmax : 321°
Emax : 271°

Quad Align :

• 'steerers : ',  li/ps/str.01-h, v    1.0406, -2.4368
• 'steerers : ',  li/ps/str.02-h, v    -3.2289, 2.8844

11h40 Thomx warm-up

12h35 HV is ON

12h40 HV 1215 V

12h50 Cycling all magnets

13h40 Beam is in the ring without RF

13h50 The FR cavity power has been restarted.

14h14 RF Gun phase 221 dg. Sect. Phase 206 dg. Sect. Att. 2.42 dB Laser Att. 286 Charges:  -99 pC, -99 pC, -100 pC Linac steerers H [0.84 -3.18] V [-2.46  3.03]. MRSV light on the streak camera

14h31 The modulator is on standby. Daniele goes to the bunker with Marie to install the horizontal slit for MRSV

14h52 HV is ON

Image MRSV sigX=36.2 sigy=14.8 pixels 

Intensite sur la streak reduite ==> On va essayer de deplacer la fente du coup

15h09 The modulator is on standby. Daniele goes to the bunker with Marie.

15h33 HV is ON

15h33 Image MRSV sigX=46.7 sigy=14.8 pixels  avec la nouvelle positions de la fente - cf screenshot

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

Matin :

Soucis synchro :
- Nicolas les a redémarré
- kevin est vebu vérifier la synchro du laser, le signal du 500 Mega un peu faible (à vérifer)
- toujours des coups perdus

Soucis Alims :
Dipole --> 250A impossible de forcer 159.3
- currentSetpointPM=159.3
- currentSetpoint=250=Current ...
Ds passé en erreur. Ok L'alim était en local ....

Soucis phase section :
Problem with  calc/li_hfi/write_dep.01-mot.01 does not work.

To change section phase li/hfi/dep.01-mot.01 was used

18h08 Unable to get low energy spread on TL sst2. It seems we observed a scattered beam.

18h15 Gave up. Stop ThomX

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

09h31 Warm-up ThomX: Modulator, Laser, Fridge

09h36 Chillers were started, cycling all magnets.

09h56 Unable to start MRSV and EL cameras. Need help.

10h33 HV is ON

10h40 HV set to 1215 V

11h24 Beam in the ring W/O RF

11h40 RF 100 kV, phase 3.7  dg. RF Gun phase 210 dg., Sect Att. 2.37 dB, Sect. phase 211 dg., Charges (BPMs) -161, -153, -158, -169 pC, Linac steerers H [0.88 -3.00], V [-2.52 3.08]. Receipt recipe_recipe_LI_TL_RI_good_20251106_16_23_16.txt

12h35 Vacuum interlock V1, restarted

Orbit correction, check with BBA and LOCO after adjusting the device indeces in MML.

16h46 Going to 70 MeV T sect. consigne 28.5ºC, Sect. Att. 0.137 dg., DP 255.8 A, TL/BPM02 X=-1.5 mm, 

As it was discussed before, the dipoles for unknown reasons were set to - 2A from nominal current in the saved receipt. We changed the current to the nominal one. Beam tuning ongoing for 70 MeV.

recipe_recipe_LI_TL_RI_good_20251125_18_31_45.txt W/O correctots in the ring, Manual phase shifter 6129, RF phase 14 dg.

to be continued.

18h40 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

8h30 : machine started on remote
50 MeV operation.
Problem with Yag-TL camera
--> try power off
Worked
Ajusterment retard camera : -20 µs / Gain 0 / exp 0.001s

Viktor : dispersion measurement.

Q-scan QP7, QP3

08h29 Warm-up ThomX: Modulator, Laser, Fridge
Chillers were started, cycling all magnets.

10h48 Beam is in the ring after resolving a lot of problems. The receipt loaded: recipe_recipe_LI_TL_RI_all_20260115_18_10_34.txt, with Linac-Tl :   recipe_recipe_TL_all_20260116_10_52_12.txt, recipe_recipe_LI_TL_straight_all_20260116_10_51_52.txt. Linac steerers: H [0.59 -2.74], V [-2.48 3.06]

RF Gun phase 140 dg. Sect. Att. 2.523 dB, Sect. phase  190 dg. Laser att. 409, charges (BPMs): -100, -95, -98, -98 -97 pC , RF 100 kV, phase -8.5 dg. The MRSV camera dozs not operate.

11h44 Problem with cameras

All triggers dissapeared

Nicolas fixed it, but phases is different: RF gun phase 96 dg., sect phase 203 dg. RF cav. phase?

12h50 Laser phase jumped to 171 dg. Sect. phase ==> 210 dg. Manual phase shifter set back to 1176. The laser att. ==> 359 for RF gun charge -115 pC (BPM)

Ring studies Model-Machine

From time to time laser fase jumps.

Triggers stopped. Nicolas is looking at it.

14h40 Beam dissapears in between the studies. Every time we retune the linac...

No triggers!!!!

18h04 LOCO is on its way. Time to times the laser loses phase synchronization. It's terrible.

18h20 We've lost laser synchronization.

18h21 Stop ThomX

08h35 Warm-up ThomX: Modulator, Laser, Fridge
08h41 Chillers were started, cycling all magnets.

09h40 HV is ON

10h12 The receipt loaded: recipe_recipe_LI_TL_RI_all_20260116_14_22_26.txt. Beam is in the ring W/O RF

RF gun phase 40 dg., Sect. Att. 2.556 dB, Sect. phase 207 dg., Linac steerers: H [0.58 -2.83], V [-2.48 2.94],  charges (BPMs):  -125, -119, -121, -122, -119 PC, the laser att.  359

10h38 RF 100 kV, phase -4 dg., manual phase shifter was adjusted.

10h54 RI_C1 Quads were stoped to chec dispersion at injection

13h00 Triggers stoped, after that was fixed the laser phase jumped to 202 dg. sect. phase 206 dg. 

15h39 Mod. standby

17h20 HV is on

18h01 Stop ThomX

08h25 Warm-up ThomX: Modulator, Laser, Fridge

08h33 Chillers were started, cycling all magnets.

09h31 HV is on. Vacuum: Li/Vac1 4e-9, Li/Vac2 3e-9, Li/Vac3 3e-9, Li/Vac4 1e-9

09h33 Sect. Att. 30 dB, RF Gun Att. 20 dB, HV 1030 V Interlock

09h39 Sect. Att. 30 dB, RF Gun Att. 20 dB, HV 1050 V Interlock. Something wrong

10h20 HV 1050 V. Maher is here. Interlock by reflected power to the klystron.

10h26 Modulator is on standby.

10h29 HV is on W/O RF. HV 1215 V. All is OK.

10h34 Modulator is on standby.

10h57 HV is on, 1030 V

11h09 HV is  1050 V

11h35 50pps, 1030V

11h42 1040 V interlock

11h45 Modulator is on standby.

16h10 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

08h15: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

08h15: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

09h19 HV is on

RF gun phase 78 dg. Sect. Att. 2.56 dB, sect. phase 219 dg. RF 50 kV. Linac steerers:  H [-0.36 -2.65], V [-2.49 3.24].

Scan ring RF frequency.

16h40 ThomX stopped