*** Spectres des 4 Echantillons Bazin + Backgroung avec :

• Cone en plomb pour pieger le faisceau - Ouverture : diametre hori ~ 1.5 , vert ~ 1.8 cm  (Ouverture fentes 2 : hori =15 mm , vert =14 mm)
• Beaucoup plus de stat

*** Trends de galerienne (trentaine de parametres + enregistrement) :
             ==> tout est dans /data/marie.jacquet/2025-06-24

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

Les aimants et les chillers etaient restes allumes.

11h59 Mise en chauffe

12h05 Cyclage aimants

13h40 Demarrage

15h37 Demarrage correction phase RF/laser selon sur temperature eau. (Coef =3.2)

atkpanel CALC/SY/Phase_stabilisation

16h22 Arret correction phase RF/laser selon sur temperature eau.

17h00 Cf plots joints, on voit que la correction stabilise le faisecau en X (points orange) . Il y a des variations regulières en Y à comprendre...

17h02 Demarrage correction phase RF/laser selon sur temperature eau. (Coef =3.4)

17h22 Arret correction phase RF/laser selon sur temperature eau. (Coef =3.4)

L'amelioration semble moins bonne...

18h06: Stop ThomX

08h50 Warm up of the modulator

8h50 Thomx warmup

10h20 HV is 'ON'

RF Gun phase is 254 dg. Sect phase is 243 dg. Sect. Att. 0.119 dB, Charges: -112 pC, -113. pC, -140 pC. Linac steeres: H [1.00 -3.49], V[1.92 2.13]

11h00 Beam is in the ring. Receipt 70 MeV from references BPM TL2 X=-1 mm

11h30 HV went standby. Maher fixed it.

11h32 HV is 'ON'

BPM transmission does not work properly (see screenshot)

Good storage at 70 MeV with the receipt.

Laser phase adjustment during the shift a few times

Work on the BBA at 70 MeV

For this, measurement of the ORM. There is a differennce with the model ORM. Attempts to tune the ring from the model. Work should be continued.

Due to this, only manual BBA can be done at the moment.

Starting also to adress the manual BBA in the TL. We used HCOR2 and QP5 and TL BPM.03. The results are not clear (big element-to-element distances). To be continued.

18h STOP THOMX

9:00 Accès pour FPC

Recherche des problemes de plantage de l'IHM cyclage.

Plantages difficiles a reproduire (pas de plantage quand j'essaie).

Quelques optimisation du code.

git pull

Ajustement des contantes Ks des BPM LI, TL, EL en fonction des attenuations de cables.

Recherche du probleme de profondeur memoire des BPMs.

9:00 Mise en chauffe

9:20 Intervention de deux personnes de Dalkia dans l'igloo. 

9h30 Cyclage aimants

10:00 Info: pas de clim laser aujourd'hui (intervention Dalkia en cours)

Etude des coups manqués en fonction de la phase du dephaseur rigol.

12h00 HV is ON at 1215 V

12h05 Laser iris set to 1.3 mm

12h20 Etude signal septum: le signal est tres bruité.

13h00 Faisceau MRSV visible en salle laser

13h20 Etude des coups manqués en fonction de la phase du dephaseur rigol. (cf plot)

Les phases rigol où il y a des pertes se repetent tous les 24 degrees avec une largeur de 6degrees. Reproductible sur plusieurs mesures. 

Changement de la frequence anneau: + 4.5kHz, delta phase=52degrees

Etude des coups manqués en fonction de la phase du dephaseur rigol. (cf plot)

C'est a nouveau reproductible tous les 24 degrees mais a des phases differentes.

Changement de fréquence de sonnerie plus : + 4,5 kHz, delta RF Phase  43 dg.  (99 dg. on the limit) 

**Si vous avez un probleme de coups manqués, faites +12 degrees sur le dephaseur Rigol. Un bouton a ete ajouté sur l'IHM Ring Cavity**

Analyse de l'amplitude des pulses du septum (cf plot en mode persistance): Bruit de l'ordre de 5mV sur 850mV.

Le kicker tire quand l'impulsion du septum n'est pas au maximum.

16h30 EL quads: [-3.67; 4.2; 0.0; -4.08;  3.8; 2.57; -2.54] A (from simulation). Ext. kiker 7422 V. There is image on the EL SST.01 (saved). 

16h35 Stop ThomX

Image processing results from the EL/DG/SST.01 camera. The resolution of the target image is 9.8 μm/pixel (horizontally).

The rms width of the horizontal beam profile (Gaussian approximation) is 325 pixels or 3.2 mm (see the figure uploaded). The simulated dispersion at the screen is about 1 m, so the rms energy spread is 0.32%.

demarrage machine 8H35
9H45 hV on 1215V
Q linac 100pC
Recherche du faisceau dans la TL sans le ring =>pas trouvé
mesure OTR
12:17 Intervention de 3 personnes de Dalkia dans la X hutch (ils disent que c'est a la demande de Kevin)

Apres-midi: optimisation anneau et EL

17:00 arret

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

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

Goal: preparation and checking the machine operation at 70 MeV and 40 MeV (ideally with X-rays)

8h54 Warming up
RF section 29.20 C -> 28.5 C

9h45 Beam on

Start at 50 MeV and then going to 70 MeV with 70MeV_Xrays_I3I4_20kpA_flatVertorbit_vertSigma_122um__20250821_14_36_08.txt

In this recette the dipoles are at 253.78 A which is 2A lower than nominal current for 70 MeV. The goal is to go to the nominal value.

Phase scans, beam is transported to the ring. Only few turns.

Scan of he RF cavity phase.

scope 192.168.229.22 which used to monitor losses and charge is not accesible as someone else is connected to it from srv 3 with  192.168.229.92. We need control of this scope in the CR.

After also checking it locally, the signals were not set, cable unplugged.

12h30 Problem with SST. Nicolas is checking.

Optimization of the injection. HCOR/VCOR are set to zero. Storage obtained; RF ON freq 500.031690 MHz

Several interlocks shutter laser linac

13h20 Stop for the visit

14h47 beam on

Daniele worked all the afternoon with the students. FPC is changed for 70 MeV.

MRSV does not start; need help for it

Work on the 70 MeV. orbit is corrected. The final tutning should be checked with X rays.

At the end we understood thqt the EL dip is set to 159.3 A. The orbit was recorrected with only the EL dip set to 253.8 A (the difference in the orbits is shown in the scrennshot). The rest of the elements of the EL are should be scaled to 70 Mev (it will not impact the orbit as dipole)

The recetter is saved:

70MeV_ELdip253p8A_20251204_18_10_12.txt

70MeV_with ELat50MeV_20251204_17_10_20.txt

The BLM signals during the shift were moving in time: to be understood, maybe timing problem.

This configuration must be checked with MRSV and/or X-rays to confirm the X-ray flux

Programme shift : etudes matching anneau-TL - Recherche param twiss TL

Valeurs ideales TL "de Julien" : betaX = 36   betaY = 36   alphaX = -4.5   alphaY = -4.5  ( = figure of merit tres petit)

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

Mesures param twiss Q1 (quad scan Q1) - charge ~ 100 pC - 50 MeV

**** Soleno = 230 

   Compresseur = 55000
       emitX = 1.8 betaX  = 22    alphaX = -7.5
       emitY = 1.5   betaY = 7    alphaY = -1.4

   Compresseur = 45000
       emitX = 1.7   betaX = 14    alphaX = -5.5
       emitY = 1.2   betaY =  4     alphaY = -1.1

   Compresseur = 65000
       emitX = 2.3   betaX = 25    alphaX = -9
       emitY = 3.2   betaY =  7     alphaY = -1.6

   Compresseur = 95000
       emitX = 2.6   betaX = 11    alphaX = -4.
       emitY = 3.3   betaY =  9     alphaY = -2.

**** Compresseur = 95000 

Soleno = 220
       emitX = 7  betaX  = 5    alphaX = -2
       emitY = 5   betaY = 4    alphaY = -0.5

Soleno = 200
       emitX = 13  betaX  = 10    alphaX = 0.85
       emitY = 10   betaY = 35    alphaY = 0.6

Soleno = 240
       emitX = 7.4  betaX  = 18    alphaX = -4.3
       emitY = 12   betaY = 50    alphaY = -6
    SIMU matching : merit = 9

Soleno = 235
       emitX = 2.6  betaX  = 14    alphaX = -4.
       emitY = 5.4   betaY = 21    alphaY = -3.6

Soleno = 238
       emitX = 3.8  betaX  = 18    alphaX = -4.3
       emitY = 7     betaY = 34    alphaY = -5.2
    SIMU matching : merit = 24

Soleno = 245
       emitX = 8.8  betaX  = 30.4    alphaX = -6.5
       emitY = 26   betaY  = 81.6    alphaY = -8.5
      SIMU matching : merit = 10^-25  ==> Q1-Q7  NO backracked sortie linac: -2.02   / 4.76  / -3.176  / 2.0    / 1.62   / -4.085 / 3.98 
                                                                            Q1-Q7 BACKTRACKED                   -1.88 /  4.74  / -3.28    / 1.99  / 1.69   / -4.03   / 3.85
 Essai de stockage : cf screenshot
   

2 Remarques : 

1) 2 figures of merit tres petites ~ 10^-20 qui donnent des valeurs de TL differentes ....

    - Valeurs ideales TL "de Julien" : betaX = 36     betaY = 36      alphaX = -4.5    alphaY = -4.5 
    - Valeurs du jour :                        betaX = 30.4   betaY = 81.6   alphaX = -6.5    alphaY = -8.5
A suivre - Trouver Bonne figure of merit + minimisation emittance .... 

2) Valeurs QUADs "QP3" utilisee dans la simu RING (quads autour de l'IP) :

QP3 SIMU julien :  - 6.7 A
QP3 REEL : 
       c1_qp8 = -6.02
       c2_qp8 = -6.03
       c1_qp9 = -6.11
        c2_qp9 = -6.0

==> ~ 0.7 A de difference  - Pour les autres quads : SIMU vs REEL sont proches.

The machine was warmed up remotemy

The FPC is ready. The laser is locked.

9h Start HV

9h08 Modulator is put to standby. Access to "repair" shutter X-line

9h20 Restart the beam

9h39 Problem with the camera laser photocathode. It does not start. So; feedback does not work and the generated charge is drifting.

9h45 Another access to fix/restart the camera

10h Camera is working. Chillers gun and RF structure are ON also now;

10h30 Beam in the ring
Miss triggering issues, see ICT data for example. 
13h : Kevin recabled the delay box on the "right" cable to avoid bad 50 Hz signal.  

Modulateur en chauffe
Alarme rendant impossible clim casemate . Maher envoie un mail a urgencevc
Check Sf6 : 2 bar ==> Appel JN ==> ajout sf6 2.5 bar

Programme : quad scan qp1 (et qp7) soleno de 200 a 260 avec chaque fois espread minimum

soleno 230    betax 26     alphax -5      betay 18       alphay -3
soleno 240              33                -5.6              51                   -8
soleno 260                                                      62                   -8

Code reconstruction crash pour soleno 250 X et Y et pour soleno 260 en X

A suivre demain

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

Mesures : Spectres et taille source X + Quads scans associées, @

** Sol 230 100pC 

** Sol 242 100pC

** Sol 250 100pC (pas de mesure, car flux ~ 3000, pas de centre vertical du faisceau sur Dectris)

** Sol 230 200 pC

18h40 Fin 
 

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