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

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.

7h55: mise en chauffe en remote (modulateur, frigo/chillers, laser, cyclage)
11h25 HV is ON

Archivage lance

** 11h43 Receipt Ref. from  50_MeV_good_tune_0.17_0.7_20251212_16_03_54.txt.  Beam is in the ring W/O RF

RF gun phase  236 dg., Sect. Att. 2.37 dB, phase 215 dg. Linac steerers: H [0.68 -2.82], V [-2.42 3.05]

12h04 RF 100 kV, phase 12.5 dg. Good storage, screenshots. Charges (BPMs): -114, -112, -115 -115 -113 pA, Tune H: 0.17, V: 0.7, MRSV size: V 14.7 pix, H 27.7 pix

BPM.05-lib.04 Sum of tbtsum is 1.5e11

13h03 RF gun phase 242 dg., Sect. phase 216 dg.
13h32 RFgun phase ==> 247 dg.
13h40 Sect. phase ==> 219 dg. RF 14 dg.
13h59 RFgun phase ==> 249 dg.
13h40 Sect. phase ==> 218 dg. 

** 14h05 Receipt recipe_recipe_TL_Sole242_all_20260106_19_08_32.txt loaded. Ring charge was killed (at injection). Trying to recuperate

14h30 after RCDS on injection ring charge about the same. Synchrotron osc. minimized. tuns the sames, but MRSV is totaly different with two picks

** 15h39 Dispersion measurement using SST3 for 242 A BMAD and old recipes. 

** ~ 15h45 After loading the 242 A BMAD receipt, adjusting DPI and Sept. to suppress beta oscillations resulted in improved MRSV (h 27.1 pix, v 15 pix).

** 16h15 recipe_recipe_TL_Sole238_all_20260106_18_11_32.txt loaded. RCDS on injection.

It is enough good. MRSV size from 28 to 21 pix hor.

*** Plusieurs images of beam length streak enregistrees pour les 3 recettes (ref_recipe, sol242, sol238)
Rien de conculant a l'oeil (avec les 2 recettes Soleno, dans la 1ere ms le faisceau s'allonge toujours, d'un facteur en gros 2, mais a quantifier) - Images a traiter proprement (repertoire 20260107)

*** Cavite FP remise en etat : realignee, 90 kW stocke, frequence passee de 70 MeV a 50 MeV ==> prete pour jeudi et vendredi

17h30 Stop ThomX

=============================================

*** A faire avec les 2 recettes sol 242 et sol 238 : produire des X et mesurer
         - Trend de flux
         - Scan vertical FPC taille electrons
         - Taille de source X a l'IP avec les fentes 1 + camera photonic

*** Rappel these A. Gramelin FIGURE 6.16 :
           For 100 pC, during the 1st milisecond of storage :
                 -  Bunch length increases by a factor 2 - 3
                 -  Emittance X and Y increase by a factor ~ 0.2 - 0.3

09h12 Warm-up ThomX: Modulator, Laser, Fridge

09h21 Chillers were started, cycling all magnets.

RF 50 pps

1210 --> interlock 
1150 : ok 

Vacc : vac4 dominates (section) 

Q_max (420) = 700 pC !

Alignement cathode à vérifier : 
position [X ; Y] : [5.33822878121 ; 4.32296059091]
pente [X ; Y] : [685.183030303 ; 1644.7430303]
error [X ; Y] : [1197.22874693 ; 11425.5175959]

13h38 Standby

14h09 Steereing coils along the section were installed, HV is on, the laser gate was closed

14h10 Sect Att. 30 dB, RF gun Att. 20 dB, HV 1160 ==>1215 V

14h13 All seems OK, Sect. Att. 20 dB 

14h15 Sect. Att. 10 dB 

14h18 Att. 5 dB 

14h20 Att. 3 dB  

14h22 Att. 2.44 dB 

14h24 interlock, sect. vacuum jumps, restarted

14h30 RF Gun Att. 15 dB. Gun vacuum drops

14h32 Gun Att. 10 dB.

14h34 Interlock, unknown reasone, restarted

14h36 Interlock, unknown reasone, restarted

14h41 RF Gun Att. 8 dB.

14h46 RF Gun Att. 7 dB.

14h50 RF Gun Att. 6 dB.

14h53 RF Gun Att. 5 dB. (Gun vac01 1e-8)

14h55 RF Gun Att. 4 dB.

15h01 RF Gun Att. 3 dB.

15h05 Interlock, restarted (not a vacuum problem)

15h06 RF Gun Att. 2 dB.

15h10 RF Gun Att. 1 dB, Sect Att. 1.44 dB

15h11 Interlock, sect. Vacuum (Vac05), Sect Att. 2 dB 

15h15 Interlock, sect. Vacuum

15h20 RF Gun Att. 0.8 dB, Sect Att. 2.04 dB

15h22 Interlock, sect. Vacuum (Vac05)

15h24 RF Gun Att. 0.7 dB, Sect Att. 2.04 dB

15h27 RF Gun Att. 0.6 dB, Sect Att. 2.04 dB

15h32 RF Gun Att. 0.5 dB, Sect Att. 2.04 dB

15h34 RF Gun Att. 0.4 dB, Sect Att. 2.04 dB

15h36 Interlock, sect. Vacuum (Vac05)

15h37 RF Gun Att. 0.3 dB, Sect Att. 2.04 dB

15h39 RF Gun Att. 0.2 dB, Sect Att. 2.04 dB

15h42 RF Gun Att. 0.1 dB, Sect Att. 2.04 dB (gun breakdowns)

15h53 RF Gun Att. 0.0 dB, Sect Att. 2.04 dB (gun breakdowns)

16h00 HV off. 12.5 pps 

16h01 HV on

16h07 Gate open, Laser Att. 233, -100 pC, RF Gun phase 103 dg.

16h35 RF Gun phase 103 dg., Sect. phase 221 dg., Sect. Att. 2.36 dB -100 pC. Linac steerers to align QP1 - QP3 H [-0.22 -2.82], V [-2.52 3.15]. Li/BPM01 x=1.8, y =0, but not on the screen

from the code : QP1 - QP3 H [-0.23 -2.82], V [-2.53 3.16].

Charge is oscillating, do not see the reason. 

rechecked the laser alignment : it's seems to be within the variations of the beam position. Cannot do better. 

Remark concerning the timing ... 25 min more on the trend data (tango, libera side ? ) : see the trend file for the positions. 

H : 5.256
V : 4.643

QP1 scan to check the working point. 

18h30 Stop 

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

08h38 There is problem with the Linac modulator

08h55 Fixed with Maher help

08h22 ThomX was started: modulator, frig, laser

08h28 Chillers was started, all magnets cycling

09h45 HV is 'ON'

There was a problem with the section phase shifter motor. It was fixed by moving the motor a lot.

11h11 RF Gun phase is 149.6 dg., Sect. phase is 207 dg., Att. is 2.77 dB. TL/BPM2 X=0.9 mm. Linac steerers: H [0.54 -2.76], V [-2.29 2.61], -36 pC, -36 pC, -39 pC, RF cav. at 50 kV, phase 21.0 dg. TbTSum in the ring about 2e7

13h0.5 TL optics was set to MADX simulated one. After adjusting the DPI and the septum, charge in the ring and X ray flux did not change. (receipt 20250502_13_04) RF Cav. at 150kV, phase 13.5 dg

13h20 dispersion measurement in the TL

15h38 New lattice loaded, injection was adjusted as well as the ring elements a little bit.

17h00 ThomX was 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 

Modulateur Impossible à passer en Standby ==> problème manque d'eau.

      * Remise à ~4bars le réseau principal

      *  Restart du soft du modulateur (sinon l'erreur reste)

      * Conductivité à 7MOhm

10h : Démarrage modulateur et refroidissement (MO)

Modulateur 1090V, Mise en place du feedback position laser

Scan charge phase avec iris à 4 mm, phase de charge max phi = 366 degres

Iris 4 mm  Qmax sur LI/SST.01 = 80.7 pC std 14.2

Iris 3 mm Qmax = 64.6 std 14.2 pC

Iris 2 mm Qmax = 32.4 std 11.2 pC

Iris 1 mm Qmax = 10.4 std 11.9 pC

Mesure energie avec les steerers : 52 MeV

Chargement recette du vendredi 30/09 (19-22-04)

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

Problème licence matlab :

Warning: Directory already exists. 
> In quad_TLSST1_thomx_Dark_dim_bary_v3 (line 87) 
License checkout failed.
License Manager Error -4
Maximum number of users for Image_Toolbox reached.
Try again later.

Troubleshoot this issue by visiting:
https://www.mathworks.com/support/lme/R2018b/4

Diagnostic Information:
Feature: Image_Toolbox
License path: /data/operateur.thomx/.matlab/R2018b_licenses:/home/debian/R2018B/licenses/license.dat:/home/debian/R2018B/licenses/network.lic
Licensing error: -4,132.

Error in quad_TLSST1_thomx_Dark_dim_bary_v3 (line 154)
        h1=drawrectangle('Position',[length(K(1,:,1))/2-50 length(K(:,1,1))/2/2-50 50 50]);pos = round(customWait(h1));% position signal

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

Faisceau pour anneau

Ouverture iris 2 mm (25 pC environ)

Ouverture iris 4 mm Qenergie max = 66 pC (phi energie max = 216)

Ok pour injection et tours dans l'anneau

Sauvegarde recette recepe_LI_TL_RI

13h13 Recipe saved for the ring. Injection optimised.

14h Camera MRSV non accessible => a verifier dans la casemate

14h05 etude de l' effet de l' iris laser sur LI/DG/BPM.01. Les 4 copies d'ecran correspondent a 4 valeurs d'iris different de 4mm a 1mm.

16h Etude systematique de la position sur LI/DG/BPM.01 vs iris. Cf images jointes.

L'attenuation etait trop forte, a basse charge (iris ferme) la position etait domine par le bruit.

Si l 'attenuation est trop forte (32dB), les mesures saturent. Il faut regler l 'attenuation de LI/DG/BPM.01 a -15dB.

Étude similaire sur TL/DG/BPM.01. Cf images jointes. Il faut regler l 'attenuation de TL/DG/BPM.01 a 0dB.

Arret machine 16h26.

Note: RI-C2/DG/MRSV n'était pas branché. Il va falloir se procurer les câbles correspondants.

9:05 Git pull

9h14: Demarrage modulateur

10h22 Client 3 does not respond; Reboot the machine

10h42 PSS Gele ...

10h46 PSS reparti

10h47 Tension modulateur 1090V  (a-t-on une nouvelle consigne?)

Scan des EP

14h18 Modulateur pb at the end of the scan. Resolu 14h30.

14h22 Intervention Philippe: Redemarrage RDP5B17. termine 14h26

15h Comparaison rafraichissement ER/SY/RAC.17-ELR.01-RDP.03 et ER/SY/RAC.17-ELR.01-RDP.04

 Dans jive/Device chosir le device et aller dans "event" "waveform_cha &chb" puis mettre "relative" a 0.001 pour que cela rafraichisse tres vite. (mais 1 semble aussi fonctionner) il ne faut pas mettre None

15h30 Pas de faisecau dans la EL... Ajustement du kicker d'extraction

16h18 Test du bouton "Tir unique" dans Synchro/ Phase + Freq

17h06 Comparaison TL/DG/BPM.04 et EL/DG/BPM.01

Attention il faut s' assurer que le gain des BPMs est le meme.

17h40 arret faisceau

===

Bilan de la journée:

* Tâche #12: Verification charge extraite: Fait

* Tâche #56: Scan réglage EP: Fait

* Tâche #5 Nouvel IHM SST: Testé, déployement au prochain git pull (en cours)

* Tâche #25: Ajouter graphe de l'orbite sur l'IHM BPM: Pertinence à  discuter

* Re-re-re-validation du mode tir unique

* Test et validation de l'acquisition des RDP B17

===

Tâches de la liste de priorité (par ordre de priorité):

Tâche #12: Verification charge extraite

Tâche #56: Scan réglage EP

Tâche #5 Nouvel IHM SST

Tâche #8: démarrer MRSV

Tâche #25: Ajouter graphe de l'orbite sur l'IHM BPM

Test diags LE

~9h Start of the modulator

10h Tuning of the injector with KD

11h Try to inject in the ring. Only 1-2 turns after optimization. We tried previous injector settings, the situation is the same. We retuned the injector based on our previous experience with

Isolenoid = 234 ->220 A,

Laser phase = 289 -> 288 

LIL phase = 114 -> 110 (Att = 2.04 dB)

Settings are saved.

We found that the injection kicker timing was not good (-7.19 us). We put the previous setting -7.23 us

Problem to start RF Cavity. IP adress problem . A lot of Debug with Jean Noel. Working when not connected to THomx network. Philip is informed.

Machine stay in standby till tomorrow. 

Starting point nominal lattice D1Thomx_017_064_r56_02_chro00 with the MCF=0.014  chro=0/0

Goal: test the new lattice with MCF=0.0231  chro=0/0 which alows to decrease the RF frequesncy down to 500.25 MHz. This will make possible operation witht eh FPC.

Total charge measured by the ICT was 60-70 pC. It was not possible to increase it with the attenuator. 

Start working with the new laser spot position on the photocathod (after previous shift by linac group). This also includes the different solenoid alignment and laser positorn feedback setting. We came back to our usual settings.

Work started witht he nominal optics at 500.32 - 500.33 MHz. Correction the orbit and minimization of the synchrotron oscillations. Check the tunes. Observations: it is not possible to reduce considerably the synch. oscilations due to some jitter from injecton to injecton. We do not know whether it is the energy or phase jitter, to be investigated. From orbit measurements w/o RF, we see that that std of the hor. orbit (injection by injection) at BPM3 (high D region) is about 0.26 mm. With the D ~ 1m => dp/p = 0.026 %. It is kind of compatible with the injector energy jitter seen at TL BPM2 : 1 mm correspods to ~0.1% dp/p. It would be good to have some information about the phase stability beetween the ring trigger and the laser. As the result of such jitter, it is difficult to find the proper E and phase and so, correct closed orbit.

RF freq = 500.25 MHz. Dispersive orbit is obtained. Optimization of the injection and storage. No betatron oscillation, should be investigated. A good storage is obtained, which could be further optimezed. 

Work on the BBA. The algorythm does not work correctly with the current TbT orbit. The jitters are quite large in order to detect the orbit change due to quadrupoles/correctors change. Under investigations. 

Measurement of the emittance. The proper/full quadrupole calibration was worked out B(I) from -12 to 12 A. The emittance was measured at 210 A and 220 A. At 220 A from the data taken, the vertical emiitance can not be estimated (gives the imaginary numbers). See the ppt attached.

Suggestion: commission the MRSV to be able to visualize the beam in the ring and set-up fully the EL to be able to measure the chrage and beam images.

End of August: take another data for emittance and study BBA.

Start of the machine by KD

11h20 The beam is in the ring

Optimization of the injection with the RCDS

Off-momentum injection from the injector

Based on the observation (attached here), it seems that there is a resonant excitation of the beam by the RF cavity. Difficult to scan with the dipole field.

=> The RF cavity should be checked and during the runs detuned.

=> Probably the priority to the RF cavity conditioning should be given to progress on the Ring comissioning

The BPM.04-LIB.03 (just before the FPC) gives a strange vertical orbit. This should be checked and further invetigated.

Test of the script to swotch off the machine by KD.

18h45 End of the shift

Start of the machine 9h

Optimization of the beam transport to the Ring.

Work on the lattice of the Ring and search for the revolution frequency.

Attempt to perform teh BBA

At 16h beam is taken by Linac team (CB/JNC)

8h50 Start of the machine

Laser amplifier was somehow OFF. Very strange situation and not clear why it happen. To be understood.

Call Viktor, who came and start the laser.

Start the beam. No beam. No e- from gun. Call Vincent.

Many instabilities in e-beam signals.

Retuning Linac, attenuator =2.114  for 50 MeV (why ??? calibration problem ?)

Work on orbit correction, starting from natural one. Slight optics tuning. Frequency 500.067 MHz. The hor. tune is 0.18

Small horizontal, small vertical steerers.

At some aatenuator or frequency values, the energy jitter appears and a lot of mistriggers.

Good storage obtained. Recipie saved : recipe_recipe_LI_TL_RI_good_20240301_15_50_35.txt

For TL orbit and Ring Orbit see screenshots.

16.10 Stop machine. Ronic, Daniele need access for FP Cavity.

8h50 Warming up the machine

Problem with the vaccum around the RF cavity (see screenshot attached). Intervention of vacuum team is needed.

Mohamed is installing the powermeter to monitor the incomingt RF power for the accelerating structure.

Laser camera should be checked before the beam start-up

Due to the vaccum cable connector we can not start the beam.

Shift started with machine receipy from Monday .

Scan parameters, injection to find orbit in the ring. Testing alghrithms for orbit correction.

15.55 Energy , charge not stable, asked Hayg to stabilize .

Ring Dipoles up 160.4A

Problem with steerers : RIC2 STR02-V01 and RIC1/ STR.05-H01 NEED TO BE REPAIRED

Fixed orbit correction gui. Units in libera are [nm] should be in [mm] to correctly scale currents.

The main idea fo this week is to prepare the beam for the search of the first X-rays.

Start without RF cavity. Study of the orbit. Orbit correction. We menage to correct hor. and vert. orbit.

We put the RF cavity ON. A lot of interlocks during the day. Difficult to operate i this conditions.

Optimization of the storage.

Orbit corresponds to the disperive orbit. Should look at this. Maybe tune the frequency.

Very good storage was obtained. The Ring dipoles were changed to 160 A to minimize synchrotron oscillations and so improve storage. The orbit did not change.

Beam physics measurements to be started.

Start of the modulator and laser at ~9h and hour later start the beam.

Working at 500.38 MHz to retrieve the previous state of the ring. Then switching to 500.33 MHz (assumed ring proper frequency).

- Optimization of the injection and ring (orbit, betatron/synchrotron oscyllations,  tune....)

- Load of the new optics with bigger MCF TDR_0.17_0.64_r56_0.4_sx_Dff41.2_DipMagnL.str : MCF=0.0231  chro=0/0. Optimization of the injector and the ring.

- Change the RF frequency to 500.25 MHz. Optimization of the injector nd the ring. The sufficient storage is obtained.

- Going to the 500.33 MHz and working on the orbit, energy and phase.

Observation: either energy or phase of the injector is not stable, it oscillates, so the amplitude of the synchrotron oscillations changes a lot (seen by the TbTX oscillation amplitude). Like this it is very difficult to find the proper energy and phase for the ring. We saved the trend (max TbTX). to be understand and worked out.

To be continued next week.

The main task for today is to measure the revolution frequency without RF cavity with the spectrum analyzer.

Start-up of the machine.

After setting the previous setting, the orbit was very different. We checked the injector, the beam also was different (based on the beam images) and based on the RF plots we suspected that the timing of the laser has changed.

We changed the delays, reworked the transport but then it needed much more time to optimize the injection. We made the reseanoble storage but decided  to come back to the original settings (to be consistent in oour studies). After that, not clear why, the orbit came back to the expected values (as it was on Friday).

Start of the spectrum analyzer. Machine is set to the seetings from last Friday. Beam in the ring is not very stable. We had a few kV in the RF cavity for a short period of time.

Measurements without the RF power and one measurement with a small power (a few kV). Plots are attached. The screenshot was done for the different oribt (dipole values).  Prelimenary conclusions: At nominal lattice (with some scaling), we can keep the beam in the ring in the energy range, which corresponds to the attenuation of the RF section of 1.97-2.14 dB (nominal is 2.03 dB). This coresponds to the revolution frequency range of x30 => 500.33 - 500.47 MHz.

At this frequency, the  mean orbit changes from about ~-3 to +3 mm.

Taking into acount this freauency/orbit change (70 kHz - ~3mm), it means that to come to the nominal RF frequency of 500.02 MHz, the mean value of the orbit in radial direction should be increased by about ~18 mm. The calculations show also that to reach teh nominal frequency due to the energy change ~5-7%, the larmor radius in dipoles should be increased by ~20 mm. All this is in agreement with what we have measured today.

=> All this estimations are certainly prelimenary.

Problem with RF cavity. Mohamed tried to solve it during the day, No storing power. We need the RF cavity to continue our studies.