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

08h30 Start ThomX

10h00 HV is 'ON'

11h03 RF Gun phase 230 dg. Att. 0.0 dB, Laser Att. 360.00, Charge -145 pC, Section Att. 2.59 dB, Phase 207 dg.

Linac steerers: H [2.69 -4.45]; V [-2.14 2.32],

11h20 Ring injection, Orbit studies

11h25 RF gun breakdowns, HV is 'OFF'

11h28 Restart HV, Problems with the Shutter,

11h36 Fixed

Frequent interlocks on V1

Set RF Gun temperature to 31.7 dg. (Clarinette temperature 31.5 -31.6)

11h40 Ring RF is 'ON'

15h43 Freaq. RF=500.1003

16h20 RF GUN Phase 229 dg., Charge -88 pC, Sect. Phase 213 dg. TL/BPM2 X=-2, Att. 2.703

17h00 Trying BBA

QP02 Ri-C2 BPM.01-Lib.04, 0.4 mm on X

QP02 Ri-C1 BPM.01-Lib.03, 1.8 mm on X

QP03 Ri-C1 BPM.02-Lib.03, 0.4 mm on X

QP03 Ri-C2 BPM.02-Lib.04, 0.2  mm on X

17h50 Stop ThomX

08H25 Start ThomX

09H45 HV is 'ON'

09h49 Breakdown in the RF Gun

09h45 Restart HV

Linac steerers H [2. 66 -4.45]; V [-2.00 2.31]

RF Gun Phase is 223 dg. Att. is 0.0, Charge is -84 pC,  Sect. Phase 193 dg., Att. is 2.6 dB TL/BPM02 X 1mm

10h35  Ring Injection

11h00 Change RF to 500.0913

Tune 0.17

11h35 RF Gun Phase is 228 dg. Att. is 0.0, Charge is -50 pC,  Sect. Phase 196 dg., Att. is 2.65 dB TL/BPM02 X 1mm

There was problem with section temperature. Fixed, Phases adjusted.

12h40 RF Gun Phase is 227 dg. Att. is 0.0, Charge is -40 pC,  Sect. Phase 201 dg., Att. is 2.70 dB TL/BPM02 X =0 mm  

17h15 STOP THOMX

08h18 Start ThomX

10h00 HV is 'ON'

10h35 RF Gun phase is 174 dg. Section Phase is  209 dg. Sect. Att. is 2.70 dB TL/BPM2 X=0, Charge is -127 pC

Linac steerers H [2.66 -4.46], V [-2.00 2.41]

10h40 Start Ring RF 100 kV, TL/BPM2 X=0,5 mm

Ring Studies

12h30 Stop HV and ring RF

12h40 Access: JN went to exchange the shunt resistors

13h26 HV iand ring RF are 'ON'

15h18 RF Gun phasee is 178 dg., Sect. phase is 215 dg.

18h10 Stop ThomX

08h28 Start ThomX

08h40 Some magnets remain switched off. Cycling was not performed

10h20 V is 'ON'

10h55 RF Gun Phase is 165 dg., Sect. Phase is 236 dg., Att. is 0.2 dB. Chargges: -105 pC, -108 pC, -114 pC I TL/DP =255.8 A (70 MeV)

12h40 Ring optic scaled to 70 MeV, there are two turns, start RCDS on injection

12h50 about 2000 turns without steerers and without  RF at the Ring

14h13 Start ring RF

 RF is killing beam at 70 MeV. No phase and energy compatible found. Studies ongoing.

15h57 Return to 50 MeV

16h20 Receipt from 28/11/2024 17h51 There is storage

18.05 Stop THOMX.

08h25 Start ThomX

09h55 HV is 'ON'

10h18 RF Gun Phase is 159 dg. Sect. Phase is 208 dg. Att. 2.66 TL/BPM2 X=-2mm, Isol =230 A, Charges: -115 pC, -95.7 pC, -100 pC

Beam injected to the Ring. There is storage there.

10h25 Ring RF is 'On', 100 kV. Storage OK

10h35 Extraction kicker is 'ON' del. is -12.4 us

10h37 TL/BPMé X=+1 mm to minimize synchrotron oscillations. Tune is 0.17

Response matrix measuring

11h45 70 MeV Receipt for 70 MeV with storage: Sect. Att is 0.204, Phase Sect is 237 dg.

12h00 RF 50 kV Beam is killed by RF

12h10 Change frequency to 500.08095 MHz

Many scans in Frequency- slow no result. Tune optics.

17h30 Hayg by scanning RF found correct frequency : 500.0325 . Recipie : Hayg 70.

Good storage!

08h23 Start ThomX

09h40 HV is 'On'

10h24 RF Gun Phase 183 dg. Sect. Att. is 2.533, Phase 212 dg. Charges; -100.0 pC, -93.0 pC, -109.0 pC, Linac steerers H [2.68 -4.4], V [-2.0 2.19]

10h35 Loading receipt from 06/12/2024 11h30, Thereis storage at freq. 500.10045 MHz, 100 kV

12h34 RF Gun Phase 181 dg. Sect. Att. is 2.553, Phase 219 dg. Charges; -106.0 pC, -100.0 pC, -112.0 pC, Linac steerers H [2.68 -4.4], V [-2.0 2.19]

Adjusting the vertical orbit to BPM1 and BPM2 (-1 mm and -1.5 mm respectively) reduces the vertical spot size on the MSRV camera

Checking BBA

14h00 Controlled access to the bunker to check the X-line shutter

15h00 HV is 'ON'

17h15 Stop ThomX

11h05 Start ThomX

11h50 BPM02-Libera04 wiring has been checked: 'OK' 

12h20 HV is 'ON' 1215 V

12h31 RF Gun phase is 179 dg.

12h48 RF Gun phase is 181 dg. Sect. Att. 2.534 dB, Phase is 213 dg. Linac Steerers H [2.98 -4.66], V [-1.8 2.15]

14h50 HV on Standby. Controlled access

15h20 HV is 'ON'

17h50 Reajust linac transport: linac steerers H [2.38 -4.18], V [-1.9 2.05]  Charge -121 pC, -114 pC, -123 pC

18h55 Stop ThomX

08h35 Start ThomX: Modulator, Frigo, All magnets.

08h40 Cicling all magnets, Start Chillers 

10h00 HV is 'On'

Modulator Interlocks at HV=1215V

10h25 HV=1215 V

Rec. from 20241219 18:14

Linac Steerers: H [2.38 -4.16],  V [-1.70 2.15]

RF Gun Phase is 199.0 dg., RF Gun Att. is 0 dB, (Dark Current is 18 mV, too low), Sect. Att. 2.53 dB, Sect. Phase is 221 dg.

Charges: -106 pC, -107 pC, -116 pC

10h50 Beam is injected to the ring

Trying the LOCO

12h35 Modulator Interlocks at HV=1215V, Went to 1200 V. Did not help even at 1000V (Maher's intervention needed).

13h00 This is the problem with triggering. When triggered internally, the modulator is working.

13h07 OK at HV=1215 V (Unknown reason). Nikolas said miss triggering is less than 5%

13h20 Linac frequency was changed a little bit to diminish miss triggering

18h00 Stop ThomX

08h25 Start ThomX: Modulator, Frigo, cycling all magnets

08h30 Start chillers

10h00 HV is 'On'

10h25 RF Gun Phase is 193 dg., Sect. Att. is 2.46 dB, Phase is 218 dg. Charges:  -98 pC, -105 pC, -106 pC

Linac steerers: H [2.38 -4.16], V [-1.8 2.15]

Ring injection. After cycling Ri-C1 QP5 is out of order, fixed

10h30 Beam is in the ring, Rec. from 20250109_17_23, TL/BPM02 X=+3 mm

11h00 setings for ring without sextupoles for LOCO

11h04 setings for ring without sextupoles for LOCO (Matlab config file) is saved

The same with sextupoles.

Trying LOCO with sextupoles: LOCO inprove results on storage and tune. Tune changed from 0.15 to 0.17

13h30 HV is 'Off'.  Controled access to the bunker.

13h55 HV is 'On'

/tmp_mnt/data/shared/commissioning_scripts/MatLab/pilotage/libera_calctunesS_ThomxOperateur.m  to measure tune from operateut.thomx account

16h55 Stop ThomX

08h25 Start ThomX: Modulator, frigo

08h35 Start chilers, laser, cycling all magnets

10h05 HV is 'On'

RF gun phase is 161 dg., Dark current about 25 mV, Att. Sect. is 2.53 dB, phase is 213 dg., Charges: -101 pC, 99. pC, -109 pC

Linac steerers: H [2.63 -4.38], V [-2.03 2.47]

10h20 RF cavity; problem with amplifier: fixed

10h25 Beam injected to the ring without RF, RCDS on the transfer line

10h45 RF is 'On'  150kV, phase -58.5 dg. TL/BPM02 X=0 

10h55 Receipt saved (I dp in ring at 159.3 A)

LOCO

11h38 Jump in Vertical position at TL/BPM01 on +1mm. Storage drops

Change the linac steerer V1 to -2.23 TL/BPM01 Y=-0.5 mm

12h16 Start feedback on the TL/BPM.01 position X=0, Y=-0.5

14h30 Start cycling dipoles and quads of the ring

14h43 The receipt from 10h55 loaded. Storage restored

15h10 ring settings with I dp = 160.4 A loaded (from the receipt of 20250110_11_04)

18h05 Stop ThomX

08h43 Start ThomX: Modulator, frigo, laser, cycling all magnets

08h50 Chillers started

09h52 HV is 'On'

10h08 HV=1215V

10h25 RF Gun Phase is 153 dg., Sect Att. is 2.5 dB, Phase is 206 dg. Charges: -107 pC, -107 pC, -113 pC

10h30 Beam injected to the ring, Receipt from 16/01/2025  18:03 TL/BPM02 X=+2mm, without RF the ring orbit is low (all negative)

11h00 RF is 'On', 100kV

11h07 FR 150 kV; to minimize synchrotron oscillations TL/BPM02 X=+2 mm

11h33 Vacuum interlock, restarted

12h28 FPC table Scan

12h40 FPC table scan: sigma Y=171 um

13h33 FPC table scan: sigma Y=156 um

13h57 RF voltage set to 250kV

14h20 FPC table scan: sigma Y=179 um

14h25 The ring optics from 10-Jan-2025 11h03 loaded

Vertiacl tune studies. Steptune 0.05 several tilmes , vertical tune start to be pronounced; Tune correction towards the nominal one 0.64;

15h27 FPC table scan: sigma Y=126 um

16h00 FPC table scan: sigma Y=121 um

For all scans FPC power 90 kW, laser size was 70 um

17h35 Stop Thomx

** Alignement Q1Q3 du jour

str1H 0.69
str1V -3.03
str2H -2.94
str2V 3.39

Passage TL min dispersion (phase sec 214 - att 2.56)

*** Alignement SECTION

str1H 1.64
str1V -1.94
str2H -3.77
str2V 2.87

Avec cet alignement, pour une excursion de phase de 180 a 250, le faisceau bouge seulement de 1 mm sur YagTL1
==> La section est alignee avec ce jeu de steerers (aux kicks faisceau pres ...)

- Charge transmise vs soleno : ok de 190A a 240 A - cf screenshot
- Mesures d'emittance Q3 section alignee MAIS attention : PAS a la bonne phase section ! (254 au mieu de 214 .....)

** Mesures yagTL1 et bpmTL1 prises pour Alignement section et pour Alignement Q1Q3

*** Kicks faisceau bpmTL1 : Correles a Li/Vac 02 et Li/Vac 03 (screenshot dans data/shared)

20h20 fin de shift

08h41 Start Thomx: Modulator, Frigo, Laser

08h46 Start chillers, all magnets sycling

09h50 Start RF

10h55 Linac steerers are about from 22/01/2025: H [0.49 -2.94], V [-3.13 3.39] to align with QP1 - QP3

RF Gun phase is 164 dg., Sect. Att. is 2.64 dB, Sect. phase is 208 dg., Charges: -108 pC, -115 pC, -119 pC

if set QP5 through QP7 and all TL steerers 'Off' but TL/Str01-V1 (-1.6 A): TL/BPM02 X,Y 0,0; TL/BPM03 X,Y -6.0,+2.0, TL/BPM04 X,Y -6.0,+5.0

11h30 Beam is in the ring: TL/BPM02 X,Y 1.2,0.9; TL/BPM03 X,Y -4.6,+3.2, TL/BPM04 X,Y -2.7,+2.7

14h43 Good Receipt 50 MeV for X rays

14h55 FPC table scan: sigma y =140 um

15h16 FPC table scan: sigma y =124 um

16h25 X ray detector level 40000

16h57 RF 150 kV, X ray detector level 50000 (one point)

It seems that Ri-C1 STR06-V01 and  Ri-C2 STR02-V01 have wrong polarity

18h05 Breakdowns in the RF Gun, Vacuum interlock

18h10 Restored

18h20 Stop ThomX

08h45 Start Thomx: Modulator, frigo, laser

08h50 Start chillers, cycling all magnets

Vacuum intervention, beam pipe closed. Vacuum OK to start (11.23)

Vacuum MPS off (Kevin)

Polarity of 2 vertical steerers in the ring :! ric1/str.06-v.01 and

ric2/str.02-v.01 were changed by Jean Noel, according to our request. 

11h20 HV is 'On'

RF Gun phase is 162 dg. Att. is 0.04 dB, Sect Att. is 2.62 dB, Phase is 212 dg. Charges: -107 pC, -112 pC, -117 pC

14h12 FPC table scan. Sigma y = 140um (receipt from 14h14). RF 150 kV

Accelerating section phase often needs  adjasment (from 106 dg. to 112 dg. )

Trying LOCO. 

14h51 the receipt from 14h14 loaded (saved before LOCO). The FPC table at X ray max. (X photodiode reading of 470 pA ). Ramp the RF cavity to 250 kV

14h58 Slava made RCDS on X photodiode readings by adjusting vertical steerers of the ring.   X photodiode reading is 500 pA

15h04 Receipt seved. X photodiode readings reaches 522 pA.

15h15 FPC table scan. Sigma y = 128 um (receipt from 14h14). RF 250 kV

15h22 RF Gun phase is 166 dg. Att. is 0.04 dB, Sect Att. is 2.62 dB, Phase is 212 dg.

Beam position at TL/BPM02 unstable from the trigger to the trigger, so the ring storage.

16h00 Going to 61.5 MeV. Sect Att. at 1.1 dB, phase 228 dg. RF at 500.04545 MHz, 50 kV TL/BPM02 X=+4mm

16h38 receipt saved. There is some storage, but orbit is wide

17h30 Optimized configuration for 61.5 MeV very good storaga => Rceipt good_20250124_17_36_24

08h45 Start Thomx: Modulator, frigo, laser

08h50 Start chillers, cycling all magnets

Vacuum intervention, beam pipe closed. Vacuum OK to start (11.23)

Vacuum MPS off (Kevin)

Polarity of 2 vertical steerers in the ring :! ric1/str.06-v.01 and

ric2/str.02-v.01 were changed by Jean Noel, according to our request. 

11h20 HV is 'On'

RF Gun phase is 162 dg. Att. is 0.04 dB, Sect Att. is 2.62 dB, Phase is 212 dg. Charges: -107 pC, -112 pC, -117 pC

14h12 FPC table scan. Sigma y = 140um (receipt from 14h14). RF 150 kV

Accelerating section phase often needs  adjasment (from 106 dg. to 112 dg. )

Trying LOCO. 

14h51 the receipt from 14h14 loaded (saved before LOCO). The FPC table at X ray max. (X photodiode reading of 470 pA ). Ramp the RF cavity to 250 kV

14h58 Slava made RCDS on X photodiode readings by adjusting vertical steerers of the ring.   X photodiode reading is 500 pA

15h04 Receipt seved. X photodiode readings reaches 522 pA.

15h15 FPC table scan. Sigma y = 128 um (receipt from 14h14). RF 250 kV

15h22 RF Gun phase is 166 dg. Att. is 0.04 dB, Sect Att. is 2.62 dB, Phase is 212 dg.

Beam position at TL/BPM02 unstable from the trigger to the trigger, so the ring storage.

16h00 Going to 61.5 MeV. Sect Att. at 1.1 dB, phase 228 dg. RF at 500.04545 MHz, 50 kV TL/BPM02 X=+4mm

16h38 receipt saved. There is some storage, but orbit is wide

17h30 Optimized configuration for 61.5 MeV very good storaga the RF cavity at 500.04545 MHz => Rceipt good_20250124_17_36_24

Orbits with and without RF are close

17h40 Stop thomx

08h20 Start ThomX: modulator, laser, fridge,cycling all magnets

08h25 chillers are started

09h50 Controlled access (Rhonic)

09h57 HV is 'On'

10h00 HV is at 1215 V

10h04 RF Gun phase is 136 dg.

10h10 Receipt from 13022025 15;05 loaded

Sect. Phase is 215 dg., Att. 2.48, TL /BPM02 X=0

The yesterday receipt does not provide yesterday storage. The ring was adjusted.

13h20 Vacuum interlock in the ring

13h40 Tthe linac waz reajusted after the interlock. RF Gun phase is 124 dg. Sect. Phase is 215 dg. TL /BPM02 X=3.5 mm

14h21 Scan FPC table. Vert. sigma 120um

Charge: -109; -104; -117 pC

15h00 61.5 MeV. Charges: -110, -107, -113 pC; F=500.04545, 100 kV, Manual phase shifter on 5254, RF phase is 23.5 dg. (the mixer phase shifter for amplitude 3562 )

15h34 Scan FPC table, so-so.

16h15 Scan FPC table 177 um.  Recipt All_202050217_16_22

16h59 70 MeV Sect. Att. 0.244 dB, Phase 238 dg. TL/BPM2 X=-0.5 mm. Linac steerers: H [0.19 -2.85], V [-3.63 3.49]

18h05 Can not store the beam

18h06 Stop ThomX

08h26 Start ThomX: Modulator, Fridge, Laser

08h32 Chillers were started, cycling all magnets

11H changement de la carte synchro... Carte synchro opérationnel

Impossible d'avoir un signal sur l'ICT1 qq soit la phase ==> synchro ??

Vincent est repasse c ok

13h20 Receipt from 202514_14_21_55 loaded (suitable for 50 MeV), injector adjusted, there is a beam in the ring without RF and with RF 50 kV, 36.5 dg. It is necessary to adjust the injection (storage is not too bad, but TL/BPM2 x=+7.5). The injection kicker affects the radio protection system, causing blocking.

13h55 the modulator is in the standby mode, the laser shutter is closed

08h25 Start ThomX; Start ThomX: Modulator, Fridge, Laser

08h32 Chillers were started, cycling all magnets

11h23 HV is 'On'

11h46 RF Gun Phase is 28 dg. Sect Att. is 2.54 dB, Phase is 209 dg. TL/BPM2 X=0, Charges: -88, -92, -96 pC

Linac correctors: H [0.59 -2.86], V [-3.23 3.47]

12h24 Beam in the ring RF 50 kV, Phase 44 dg.

12h35 RF 150kV, Phase 32 Kicker delay 7.3952 us,  9497 V

17h10 HV on 'Sttandby', the laser gate closed, injection kicker pulse correction

17h52 injection kicker pulse was corrected

HV is 'On'

18h39 The beam is in the ring. It is OK!

18h45 Stop ThomX

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