9:15 Mise en chauffe

9h30 Arrivée du SPR: testsSSI ce matin => pas de faisceau avant midi => machine off

12h30 Mise en chauffe,cyclage aimants

13h10 Demarrage

Claquage a 1200V.

13h30 Faisceau

ND : ajustement de cameras

Soleno Scan

Mesure emittance @soleno

9h Intervention laser

Intervention pour realignement el/dg/sst.01

11h Fin interventions demarrage machine

12h Quad scans

14h Measures TL

16h Stop ThomX

8h50 Mise en chauffe, cyclage aimants

Healthcheck:

- defaut sur le vide (resolu)

- Pb redpitaya (resolu)

9h11 Healthcheck OK

9h30: Beam on

11h53 Changement d'operateur: Slava, Hayg et Viktor

14:30 Acces pour recuperer le wattmetre dans la casemate.

autour de 16h : perte de base de donnée tango

16h19 : deuxième perte base de donnée tango (cf screenshot)

2 personnes connectees a distance sur Client1

17h28 problème avec le shutter laser (en orange), plus de faisceau

Etude du declenchement de TL/SST.02. La camera se declenche a +64ms (donc sur le tir suivant).

17h53 Changement operateur: Kevin et Hayg

Encore shutter laser qui se bloque.
18h44 : Bon ben impossible de redémarrer, Stop ThomX

8:59 Mise en chauffe

9:15 Installation laser alignement SR

10:30 Problem Astor et Jive (see screenshot)

Recipe loaded: LI_TL_RI_all_20250402_13_31_23

Adjust orbit

Recipe saved: LI_TL_RI_test_20250404_12_25_21

12:10 Beam stored

Adjust iris position to take into account new ring size.

Problem with controlled access...

14:57 Alignment of the iris OK

15:30 Access to install lenses

17:30 Optimise mens for SR

18:00 Stop beam

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%.

9:30 Demarrage machine

Fin installation Cerenkov + tests MRSV

Laser alignement Cerenkov arrive jusqu'a la camera a balayage

11:00 Demarrage machine

13:30 Arret machine. On a vu du Cerenkov dans la boite du milieu du couloir mais pas au dela. Rien sur la camera en salle laser.

13:57 Mise en chauffe

15:00 Faisecau

Tests sur les ecrans

17:00 Arret

9h15 Les comptes operateurs etaient restes allumes avec un message d'erreur indiquant que la machine n'etait pas totalement arretee.

Mise en chauffe

9h45 Demarrage Kicker extraction avec MO.

10h15 Cyclage des aimants

10h20 Health check OK (a part les aimants en cours de cyclage)

10h30: Trig

10h40 Arrivee du SPR avec une demande de verification des systemes incendies dans la casemate et les sous_sols!!!! Je leur ai it de voir avec le S. Wurth mais qu'il y avait du faisceau...

11h00 Le SPR avec DEKRA a lance les tests de la centrale incedie. Interlock faisceau!!! Apparement Kevin etait prevenu.

12h15 Tests SPR (qui devaient durer 30 minutes) termines.

Chargement recette  LI_RI_TL test 20221215_16_59_39

12h30 Faisceau tres instable sur TL/SST.02 (cf images jointes: 1 tir et 10 tirs)

TL/DP.01 Courant: 167A

12:55 Chargement recette recipe_recipe_LI_TL_RI_good_20221209_18_44_48.txt

===

1) Établir le transport jusqu'à l'anneau

2) Tentative de stockage dans l'anneau

3) Démarrage/calage en temps du kicker d'extraction pour mieux gérer la sortie du faisceau.

4) Caractérisation du faisceau entrant avec étude de l'effet des fentes (TL/DG/SRH) et recherche d'une optimisation à ce niveau là.

5) Transport jusqu'à la LE

6) Vérification des diags de la LE

7) vérification de la calibration des caméras.

8) Tests nouveaux réglages caméra ACE (TL/DG/SST.02)
 

Coordinator: ND

9h12: Modulator start

PSS: Default centrale SSI

10h30 Beam

Load recipe: LI_TL_straight_test_20231027_11_21_15

12:15 Lunch break

Strange message left on one of the computer screens.

14:15: The shutter was moved over lunch time without it being logged.

14h20 Access to check MRSV

14h40 Restart beam

Some signal observed beam on and not beam off. But strongly misaligned.

Several access, trying to align the MRSV. No luck. More time to be spent on it.

17h30 Stop beam

9:30 Mise en chauffe

10:00 git pull

Alignement laser sur camera a balayage

Solenoide 220A

11:00 Alumage faisceau

Recette TL_LE_test_20231026_11_25_43

11:15 Faisceau observe sur camera a balayage

12:30 Pause

14:00 Recherche signaux declenchement.

La voie A1 de la baie 39 n'etait pas connectee.

Recherche de signal... Appel Hamamatsu...

17:00 Signal synchrone observee (cf image) mais problemes a comprendre avec la camera (signal 125MHz après déphaseur très déformé).

18:00 Arret machine

9:15 Mise en chauffe modulateur

10:23 Temperature chiller incorrecte

11h Optilization of the beam for injection. Beam is unstable, what is seen fro, the x/y position trends in the TL. Then, from time to time the beam is not injected in the ring causing the jumps in the signal intensity ???

12h  Hayg helped to find the good conditions and we started to inject in the ring but still with the not stable beam.

14h We try to store the beam by optimizing the parameters of the RF cavity => approaching the good storage. Suddenly the beam changed the parameters and we lost injection.

16h Trying to reestablish the injection and perform the optimization AGAIN

17h Difficult to restore the storage: beam from injector is not stable and therefore difficult to see the effect from the ring studies

18h After several studies, we found the proper RF frequency for current ring settings 500.4259 MHz

With ~20 kV obtained storage is about 15 ms measured with the additional electrode on the scope. Libera several times went down and had to be restarted.

The injection is not stable (intensity goes from 0 to max value), which makes it VERY DIFFICULT to optimize the beam storage in the ring. We added two QUAD (4 and 5) to our optimization routine.

After orbit correction the storage was 100 ms with ~20 kV RF and fRF = 500.404 MHz

Studies to be continued. More stable beam is requested from the injector.

19h30 Shift is finished.

9h15 Mise en chauffe modulateur

9h30 Fin ronde casemate

9h40 Resisivite eau B18: 4.71

Air comprime: 7 bars

Pression Eau 3 bars

9:45 Health check: tous problems resolu sauf archivage

9:55 Cyclage aimants

=> Probleme sur EL/PS/DP.01 (Unable to reach set point)

=> Probleme sur RI-C1/PS/QP5, RI-C1/PS/QP6, RI-C2/PS/QP6

10:40 Scan charge-phase.

Laser tres desaligne

11:13 Mesure d'energie 50.1MeV

11:15 TL/PS/DP.01: 162.3A

11:28 Phase RF: 103

Stabilite sur TL/DG/SST.02: Environs 2 taches focales

Stabilite sur TL/DG/SST.03: Environs 0,1 taches focales

11:50 Demarrage EP (avec l 'aide de Maher)

TL/PS/DPi.01 = 7.90

RI-C1/PS/DP.01165A

12:13 Before ring tunig: Freq=500.4138MHz

After tuning 500.479MHz

Apres-midi: Tentative de stockage dans l 'anneau.

Avec la cavite RF nous parvenons a faire plus de tour mais pas a stocker

Etude de l 'effet des fentes.

Demarrage du kicker d 'extraction (cf copie d 'ecran)

16:15 Arret laser + faisceau

===

Shift plan:

1) Try to transport the beam in the TL

2) Check stability

3) Try to transport to EL

4) Try to enter the ring and do several turns

5) Close the slits

5) Try to start the extraction kicker ( For septum settings cf https://elog.lal.in2p3.fr/THOMX/Commissionning/571 )

6) Try to store the beam

9:19: Mise en chauffe

10:24 Cycling magnets

10:50 Demarrage faisceau

11:21 load recipe_recipe_LI_TL_RI_all_20230317_15_52_23.txt

Beam to RI-C2/BPM.05

Problem with injection kicker. Not triggering and DS says Charging power supply is OFF. Maher came to solve the problem (14h). Most probably this was a reason of only 1 turn during the last days.

15h Studies on the DPI and SEPT on the injection (1st BPM x-orbit). Compared to yesterday run, we see the good response on change of the DPI ans SEPT. The first BPM is at +(4-6) mm.

Without injection kicker, beam is lost after ~1 turn.

9:24 Mise en chauffe

9:30 Cyclage des aimants

11h44 Démarrage faisceau

Les positions laser sur le feedback ont changé : hor position = 4.950 et ver position = 2.351

Remise des paramètres de référence :

Laser Iris position  [H;V] : [4.90/2.42mm]

Solénoides position : Z : 3.3mm, -4.9mrad

                                 X : 0.8mm, 10.201mrad

Scan Charge Phase : Energie max = 286 degres

Solenoide : 225 A

Mesure Energie of the electron (MeV) = 50.0260 +/- 0.0027

Energy at the center of the screen (MeV) = 49.9967

Relative energy spread FWHM (%) : 0.1755

13:30 Problème allumage TL/DPi bloque le MPS

14:00 Faisceau dans EL

Sur EL/SST.01 le faisecau semble etre dans une boite qui est sensible au champ des steerers.

Deux images attachees avec EL/DPI=-6.8 et EL/DPI=-7.1

Meilleure recette pour entrer dans l'anneau :  recipe_recipe_LI_TL_RI_all_20230317_15_52_23.txt

Phase RF section 110deg

Attenuateur: 1.94dB

On a reussit a aller jusqu'a ri-C2/DG/BPM.05 mais pas BPM.06

17h32: Arret machine

9:15 Mise en chauffe

10:30 Ronde casemate

10:40 Start beam

RF laser vs section phase: 113

11:50 Le faisceau bouge de 2 taches focales sur TL/SST.03

12:10 Beam in the ring

13:00 Etude injection dans l 'anneau vs RF gun phase (cf plot). La phase de -52 degrees par rapport a la chute de charge semble bonne.

15:30 Etude de l'effet des fentes sur le pic a l'injection

Fente cote mur tue le pic a l'injection tout en laissant stocker vers 21mm

Fente cote anneau: tue l 'injection tout en laissant passer de la charge vers 14mm

Explication des graphes:

- ligne bleue = charge avant injection (bruit de fond)

- ligne orange = charge a l'injection

- ligne verte = charge apres 10 tours

- ligne rouge = charge apres 50 tours

- ligne magenta = charge apres 100 tours

17:00 Arret machine

Mise en chauffe

9:45 Cyclage aimants

9:48 Demarrage

9h20 Start modulator, cycle magnets

10h20 Intevention Vincent sur PA

10h40 Scan charge phase

12:00 Tentative demarrage cavite

16h00 Diagnostics switched to 1Hz . We returnd to 10 Hz few moments later.

Mohamed turned Cavity to automatic tuning. RF Amplitude 40 kV . Beam is stored.

Understanding of settings of LIbera with N. Hubert.

Tune measurements with excitation coming from extraction kicker (780V),  images below.

First time horizontal tune is measured (0.36-0.37) , and is close to the model one. Data stored for postprocessing.

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

12h47 Mise en chauffe modulateur

Zone de stockage en rouge

Mise en route frigo, chillers : ok

Kickers en défaut, kicker extraction sera remis en route lundi matin

Laser ok

Faisceau ok

16h17 fin des tests, tout est ok cote canon pour aujourd'hui

Première lumière OTR pris sur la station TL/DG/SST.01 !

Images are without and with background substraction.

AM.