<p>12h10: Mise en chauffe modulateur, laser et chiller + PA</p>

<p>14h30: mesure phase relative sortie pilote/ sortie PA&nbsp; Vrms pilote, Vrms PA&nbsp; &nbsp;<strong>Sans HT dans le Klystron</strong></p>

<p>s&#39;il vous plait,&nbsp; Indiquez l&#39;heure du passage&nbsp;&nbsp;sous haute&nbsp; tension (pour voir si cela change quelque chose &agrave; aux mesures RF) MERCI</p>

<p>15h03 modulateur trig</p>

<p>Wave catchers arretes soft - Vincent les a redemarre (c&#39;est la 2eme fois) Est-vr</p>

<p>&nbsp;</p>

<p>&nbsp;</p>

07h50 Start ThomX

09h20 HV is 'ON'

09h25 HV  1215 V

09h52 RF Gun phase 234 dg. Att. 0.0 dB, Charge -110.0 pC; Sect. phase 208 dg., Att. 2.566 dB, TL/BPM2 X +2 mm

10h00 injection to the ring TL/BPM2 X -2 mm

10h02 Ring RF 100 kV

Today compared to yesterday shift the synchrotron oscillation amplitude is very unstable. Phase ? To be investigated.

First beam imaging with the MRSV.

 BBA studies

Horizontal plane

BPM3 (BPM.04-Lib.03) dX=1.1 mm

BPM9 (BPM.04-Lib.05) dX=0.8 mm

BPM5 (BPM.06-Lib.04) dX=0.2 mm

BPM11 (BPM.06-Lib.05) dX=-0.3 mm

BPM4 (BPM.05-Lib.04) dX=-0.3 mm

BPM10 (BPM.05-Lib.05) dX=1.2 mm

Set offsets on X in Liberas (OffX)

BPM.01-Lib.03, 130000+1800000 = 1930000

BPM.02-Lib.03, 70000+400000 = 470000

BPM.04-Lib.03, 40000+1100000 = 1140000

BPM.06-Lib.04, 30000+200000 = 230000

BPM.03-Lib.03, 60000+100000 = 160000

BPM.05-Lib.04, 130000-300000 = -170000

BPM.01-Lib.04, 300000+400000 = 700000

BPM.02-Lib.04, 70000+200000 =  270000

BPM.05-Lib.05, 140000+1200000 = 1340000

BPM.06-Lib.05, -20000-300000 = -320000

BPM.04-Lib.04, -50000+800000 = 750000

BPM.03-Lib.03, 60000+100000 = 160000

Vertical plane

BPM12 ri-c1/dg/bpm.01-lib.03 dY =  -2.4 mm

BPM1 ri-c1/dg/bpm.02-lib.03 dY = - 0.1 mm

BPM2 ri-c1/dg/bpm.03-lib.03 dY = - 0.5 mm

BPM3 ri-c1/dg/bpm.04-lib.03 dY = -0.2 mm

BPM4 ri-c1/dg/bpm.05-lib.04 dY = -1.0 mm

BPM5 ri-c1/dg/bpm.06-lib.04 dY = - 0.7 mm

BPM6 ri-c2/dg/bpm.01-lib.04 dY = - 1 mm

BPM7 ri-c2/dg/bpm.02-lib.04 dY = - 0.1 mm

BPM8 ri-c2/dg/bpm.03-lib.05 dY = -0.3 mm

BPM9 ri-c2/dg/bpm.04-lib.05 dY = -0.6 mm

BPM10 ri-c2/dg/bpm.05-lib.05 dY = + 0.3 mm

BPM11 ri-c2/dg/bpm.06-lib.05 dY = +0.5 mm

Set offsets on Y in Liberas (OffY)

BPM12 ri-c1/dg/bpm.01-lib.03 dY_new  = -300000 -2.4 mm  = -2700000

BPM1 ri-c1/dg/bpm.02-lib.03 dY_new = - 10000 - 0.1 mm = -110000

BPM2 ri-c1/dg/bpm.03-lib.03 dY_new = 105000 - 0.5 mm = -395000

BPM3 ri-c1/dg/bpm.04-lib.03 dY_new = 190000 -0.2 mm = -10000

BPM4 ri-c1/dg/bpm.05-lib.04 dY_new = - 110000  -1.0 mm =  -1110000

BPM5 ri-c1/dg/bpm.06-lib.04 dY_new = -100000 - 0.7 mm = -800000

BPM6 ri-c2/dg/bpm.01-lib.04 dY_new = -20000 - 1 mm = -980000

BPM7 ri-c2/dg/bpm.02-lib.04 dY_new = 150000 - 0.1 mm = 50000

BPM8 ri-c2/dg/bpm.03-lib.05 dY_new = 0 - 0.3 mm = -300000

BPM9 ri-c2/dg/bpm.04-lib.05 dY_new = - 90000 -0.6 mm =  -690000

BPM10 ri-c2/dg/bpm.05-lib.05 dY_new = 70000 + 0.3 mm =  370000

BPM11 ri-c2/dg/bpm.06-lib.05 dY_new = 10000 +0.5 mm = 510000

Studies in single trigget mode. See screenshots.

Beam is stored (sligth decay) in the ring around 15 minutes without touching anything. This opens way for beam dynamics studies and for better understanding of machine. Need to find a way to have diagnostics data  (trigger only diag) in such mode.

17h50 Stop ThomX

10h30 Start beam

Since Friday evening the problem to store the beam at 70 MeV. There is 1 turn only. Probably some subsystem failure. At this moment the reason is not found. Help is needed: synchronization/Diag/Magnets.

Today morning the same situation. We came back to 50 MeV and the problem remains.

We checked dipoles with resistors, it looks fine. We are checking synchronization and laser, Diag delays.....

We found the problem is with kicker. looking now at this with Maher. The max value it accepts is 2500 V.

12h20 Maher wil restart the kicker at the hardware level. Maher is contacting SOLEIL.

12h30 The modulator has been set to standby mode.

Investigation of the problem with injection kicker.

Tomorrow tests with SOLEIL people.

16h30 Stop ThomX

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

08h56 Warm-up ThomX: Modulator, Laser, Fridge
Chillers were started, cycling all magnets.
Low SF6 pressure.

10h20 HV ON

Tuning of the Linac. Charge at ICT1 is about 100 pC

Load the nominal receipt.

Modulator put to stand by. Lunch break.

13h16 HV ON

Application of the quadrupol calibration curve -12..12 A.

NEW

K1i_model =

   -1.5941
   -1.5941
   -1.5941
   -1.5941

K2i_model =

    3.2615
    3.2615
    3.2615
    3.2615

K3i_model =

   -6.1107
   -6.1107
   -6.1107
   -6.1107

K4i_model =

    5.4292
    5.4292
    5.4292
    5.4292

K5i_model =

   -3.5901
   -3.5901
   -3.5901
   -3.5901

K6i_model =

    2.3630
    2.3630
    2.3630
    2.3630

>> 
OLD
K1i_model =

   -1.5473
   -1.5473
   -1.5473
   -1.5473

K2i_model =

    3.1987
    3.1987
    3.1987
    3.1987

K3i_model =

   -6.0302
   -6.0302
   -6.0302
   -6.0302

K4i_model =

    5.3524
    5.3524
    5.3524
    5.3524

K5i_model =

   -3.5248
   -3.5248
   -3.5248
   -3.5248

K6i_model =

    2.3082
    2.3082
    2.3082
    2.3082

Machine-Model studies.

Nominal receipt

Before LOCO
=== dQ/dx comparison (axis: delta (dk*steps)) ===
Family    dQx/dx(M)      dQx/dx(T)      ratio     dQy/dx(M)      dQy/dx(T)      ratio
QP1     +4.975e-01  +5.370e-01   0.927   -3.362e-01  -4.067e-01   0.826
QP2     +7.289e-01  +8.119e-01   0.898   -2.407e-01  -2.830e-01   0.851
QP3     +2.198e-01  +2.420e-01   0.908   -9.850e-01  -6.102e-01   1.614
QP4     +1.026e+00  +1.136e+00   0.903   -2.736e-01  -2.968e-01   0.922
QP31    +6.600e-02  +7.543e-02   0.875   -2.357e+00  -1.288e+00   1.830
QP41    +5.350e-01  +6.000e-01   0.892   -1.024e+00  -5.563e-01   1.841

LOCO studies.

Checked that the first turn on which we inject now is 13-14th.

18h20 STOP THOMX

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

9h40: mise en chauffe (chillers/frigo, modulateur, cyclage)

HV ON

The ICT signal (GUN) is frozen. Need help to restart it. Use the BPM SpSum instead.

13h Beam in the ring.

RF gun phase 31 dg., Sect. att. 2.47 dB, Sect. phase 237 dg., charges (ICT): about -120 pC

17h16 ThomX stopped

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

09h00 Warm-up ThomX: Modulator, Laser, Fridge

09h05 Chillers were started, cycling all magnets

10h03 HV is on

10h08 The laser att. 300 ==> 274 to set the gun charge to -100 pC 

12h55 : Vacuum level OK after TRIG ON
13h00 : Laser ON : no spot on screen put last motor positions (2266 && 4158) --> No spot on screen :(
13h05 : Gun activities incresed (Vac > 1e-7 && reflected power)
13h12 : Laser put OFF

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

08h37 Chillers were started, cycling all magnets

09h48 HV is ON

10h42 There was a problem with "Camera Laser". Restarted  li/op/las.02 server by killing it

12h26 Beam is in the ring, RF 100 kV, phase -42 dg. Laser phase 163 dg. Sect att. 2.57 dB, Sect. phase 221 dg. Laser att. 324, Charge oscillating around -120 pC. Feedback laser PID coefficients were changed: P=0.5,I=0.02, D=0.05 to get more stable laser spot position (Old: P=0.7,I=0.01, D=0.1 ).

18h27 ThomX was stopped

7h45: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

8h46 The photocathode laser image on the camera is very weak, I can't initiate feedback. Help needed.

08h56 HV is on

During another attempt to launch laser position feedback, the diaphragm completely disappeared outside the screen (to the right).

OK it was fixed

09h57 beam is in the ring w/o RF, recipe_recipe_LI_TL_RI_good_20260318_16_17_14.txt loaded. Laser phase 5 dg. (to low), sect. att. 0.148 dB, sect. phase 258 dg., Charges around -100 pC,

10h06 RF 100 kV, phase -45 dg.

10h30 interlocks even at sect. att. 0244 dB

11h15 Sect. temp. set to 29.2C  (Clarinette, Consigne 28.6 C)

11h57 laser phase jumped to 18 dg.

12h25 For the 70 MeV settings (DP current 255.8 A) the linac energy is too low, so we left 253.8 A ==> 69.7 MeV.

18h10 ThomX was stopped

7h20: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

08h55 HV is ON

10h07 70 MeV. Beam is in the ring with RF 100 kV, phase -37.5 dg. The recipe_recipe_LI_TL_RI_good_20260318_16_17_14.txt loaded, linac steerers adjusted, Laser phase 56 dg., Sect. Att. 0.191 dB, Sect. phase 255 dg. charges around -100 pC, laser att. 323,

Goal: same orbit as for 50 MeV for X rays.

Work on 70 MeV orbit.

Orbits were obtained near IP. Receipt 70 MeV: recipe_recipe_LI_TL_RI_all_20260320_12_35_26.txt

Work on 61.5 MeV

Receipt 61.5 MeV: recipe_recipe_LI_TL_RI_all_20260320_16_26_35.txt, F=500.034945 MHz

7h37 : mise en chauffe en remote (frigo/chiller, modulateur, laser, cyclage)

08h57 HV is ON

==> 70 MeV, F=500.031645 MHz

11h20 Beam is in the ring. recipe_recipe_LI_TL_RI_all_20260320_12_35_26.txt loaded with linac steerers adjusted

11h21 Laser Phase 54.3291 dg., Sect. Phase 256 dg., Sect. Att. 0.197 dB, I_Gun -96.9629 pC, I_Linac -144.3734 pC, I_TL -126.6061 pC RF_Ampl. 99.1184 kV, RF_Phase -59 dg.

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

08h58 HV is ON

recipe_recipe_LI_TL_RI_all_20260326_09_09_20.txt loaded

09h20 Laser Phase 83.1 dg., Sect. Phase 212 dg., Sect. Att. 2.397 dB, I_Gun -81.8326 pC, I_Linac -86.4815 pC, I_TL -93.017 pC RF_Ampl. 0 kV, RF_Phase -47.91 dg.

15h29 Laser Phase 97 dg., Sect. Phase 224 dg., Sect. Att. 2.417 dB, I_Gun -100.8297 pC, I_Linac -125.7466 pC, I_TL -113.6521 pC RF_Ampl. 148.7161 kV, RF_Phase -36.5 dg.

18h23 Laser Phase 97 dg., Sect. Phase 224 dg., Sect. Att. 2.507 dB, I_Gun -103.7883 pC, I_Linac -128.9273 pC, I_TL -117.0162 pC RF_Ampl. 148.7161 kV, RF_Phase -36.5 dg.