| ID |
Date |
Author |
Status |
Type |
Category |
Important |
Subject |
Icon |
|
992
|
Thu Jan 9 16:03:52 2025 |
ND, IC, VK, VM | Under Process | Shift summary | LE |
|
Optimisation LE | | 15h Scan extraction kicker vs EL/BPM.01.
See attached plots.
Some interferences with ring storage.
Stay around -8us.
Testing reproductibility
Extraction timing=-8.088
Transmission 9%
16h40 Scanning EL/PS/DP.01...
Transmission 36% but it is not clear if the improvment comes from the ring or the transport.
Storage losses in the ring are about 50% so less than 15% losses due to ring injection+extraction.
|
|
993
|
Fri Jan 10 08:24:25 2025 |
IC, VK, VM, ND | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
994
|
Tue Jan 14 07:53:17 2025 |
KD MJ VC HG | Under Process | Shift summary | MECA | Linac Commissionning | Ring Commissioning |
|
shift du 14 janvier 2025 | | 7h50 : mise en chauffe machine à distance (chiller, frigo, modulateur, laser)
9h15 re demarrage du serveur LI/OP/LAS.02 => External_trigger_multi
redemarrage serveur feedback laser astor/salle control/client5/ThomX_Photocathode
réalignement laser
passage section
Alignement Q1-Q3
YAG TL/DG/STT01 très sale sur la camera à nettoyer?
pB E faisceau
phasesec 217
Ebeam att 1.7dB 43.15 Mev
Ebeam att 1dB 41 Mev
Ebeam att 5dB 38 Mev
Ebeam att 2dB 45 Mev (soleno 160A)
Ebeam att 1dB 42 Mev !!!!!!!!
Ebeam att 1dB 45 Mev !!!!!!! =>>>> Vincent : "Oups c'est pas moa" Qqun : " OOOOOOHHH comment il assume pas le mec !"
Ekinbeam canon 4.8MeV => pB phase max canon ! phase canon 2107 ... OUILLE OUILLE OUILLLE
... redevenons serieux
Alignement Q1-Q3
Alignement QUADs Q4 a Q7
** Q5 avec le TL/STR1H entre 3 et 4 A (tous les str de la TL à 0 test avec Q1 et Q3 à 0 et au nominal)
** Q4 avec avec le TL/STR1H à 0
** Q6 avec avec le TL/STR1H à 3A
** Q7 avec avec le TL/STR1H à 4A
StrTL1X : positif vers le mur et BMPTL01 : positif vers le mur (archive Marie (à ne pas recycler ))
On verifie que c'est coherent.
3.5 A sur strTL1H avec beam 50MeV : correspond a rotation Q1-Q3 de 0.6 mrad vers le mur (calcul Marie a verifier avant potentielle intervention MECA)
Mesures
Avec phase et attenuateur section min dispersion et energie 50 MeV (bpmtl2_x = 0) :
Pour differentes valeurs de soleno :
** Mesure d'emittance en mode "section alignee"
** Re-Mesures Axe section et Axe Q1_Q3
19h40 fin de shift |
|
996
|
Wed Jan 15 08:16:32 2025 |
MJ KD VC HG | Under Process | Shift summary | Aimants | Linac Commissionning | Ring Commissioning |
|
shift du 15 janvier 2025 | | 8h15 : mise en chauffe de la machine à distance (modulateur, laser, frigo, chiller)
faisceau Linac et TL non déviée => manip pour la comphéension des sauts.
Pos laser H4.374 V3.36
Phase canon Emax 162
best foc sut Li YAG1 250A
QEmax 130pC
LI Str 1 H 2.38 V -1.9
LI Str 2 H -4.16 V 2.05
phase section (non optimisée) 213
Dipole off
Avec ou sans Q1 à Q3 les saut sont visibles sur TL/BPM1 et TL/SST1
relation courant steerer/pos faisceau TL\BPM1
H
LI str2 +-0.1A => +-500µm position
LI str1 +-0.1A => +-300µm position
V
LI str2 +-0.1A => +-500µm position
LI str1 +-0.1A => +-500µm position
test nB step versus frequence canon
Q beam 25pC
11h27 => freq gun 25Hz 11h37
11h37 => freq gun 1Hz
(Njumps / delta_t) decreased with beam repetition rate --> most likely a charge effect
15h30 Alex fait 3/4 de tour de cle Q1-Q3 (q3 vers le mur, ~0.5-0.7 mrad)
Ca ne semble pas changer grand chose sur alignement q5_q7 ... a verifier + axe q1_q3 a reconstruire
======================
17h: Injection + stockage anneau avec 160.4 I_dip anneau + HIGH Steerers horiz TL
recipe_recipe_LI_TL_RI_good_20250115_17_11_29.txt
Cf screenshot stockage_50MeV_new_align.png
17h25 : injection + stockage anneau
1) sans steerer horiz
2) et avec 159.3 dipoles anneau
--> recipe_recipe_LI_TL_RI_good_20250115_17_28_10.txt
cf screenshots
stockage_50MeV_new_align_159_3_no_steerer.png
tbtsum_compare_160_4_and_159_3-ring_dipole_2025-01-15_17-33-25.png
ST3_storage_No_steerer_dipRING_159_3_2025-01-15_18-24-13.png
BPM_TL_2025-01-15_17-52-24.png
fin de shift
|
|
997
|
Thu Jan 16 08:28:07 2025 |
VM, IC, VK | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
999
|
Fri Jan 17 08:44:09 2025 |
MV, IC, VK | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
1000
|
Tue Jan 21 08:08:43 2025 |
KD | Under Process | Shift summary | LI | TL | Linac Commissionning | Ring Commissioning |
|
shift du 21 janvier 2025 | | 8h10 : mise en chauffe à distance (modulateur, laser, frigo/chiller) |
|
Draft
|
Thu Jan 23 08:44:17 2025 |
MV, IC, VK, RC | Under Process | Shift summary | Ring Commissioning |
|
| | 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 |
|
1005
|
Fri Jan 24 08:45:26 2025 |
MV, IC, VK, RC | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
1006
|
Fri Jan 24 17:39:00 2025 |
MV, IC, VK, RC | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
1007
|
Mon Feb 10 09:42:13 2025 |
ND, VC, HG, MJ | Under Process | Shift summary | LI | TL | LE | Ring | Diag | Aimants | CC | Infra | Laser | Opt | RF D1 | RF Anneau | MECA | SY | Vide | Electronique | Linac Commissionning | Ring Commissioning |
|
Test demarrage 10/02 | | 9:37 Mise en chauffe
Maher signal que des tests ont ete fait sur le canon, leger risque de claquage.
Pression SF6: 2938mbar
Health Check:
rac.17-elr.01-RDP.01 en defaut.
Vanne OC/VA/aval.01 ne s'ouvre pas.
9:55 cycle magnets
Attenuateur canon 0.5dB (cf infos sur tableau en SdC)
Attenuateur section 2.5dB
10:40 Beam ON
Claquages a 1209V.
11:55 Ca passe a 1210V.
12:58 On atteind enfin 1215V!!!
Faisceau centre' a 238 degrees et 2.dB att section.
13:21 Chargement recette good_20250124_15_05_25
Passage 0dB Canon
Faisceau centre' a 238 degrees et 2.28dB att section.
14:00 Ring ferquency set to 500.100450 MHz
Rigol phase adjusted from 175 to 160 degrees
14:10 Faisceau stocke dans l'anneau
Phase -88
==========================
14:45 ; Gun conditioning
Note : vides
Increase attenuation to find multipacting barriers :
- Start 5dB end 6.5 dB ==> max : around 6.5
15h15 : 25Hz to speedup conditioning
16h++ : Soleno @ 300A mais interlocks vide puis soleno 280A
18h : On redescend doucement a 0db pour voir si il y a un effet sur les kicks apres ces qq heures de condition.
Tout a coup, plus de charge - FRIGO OFF tout seul tout a coup - (==>modulateur mis sur HV)
Jean-Noel essaie de redemarrer : en local non plus ça ne fonctionne pas.
Probleme résolu, automate était en mode STOP, mode RUN a tout arrangé. 
Mercredi : apres shift alignement données de vide @ différent puissance GUN
Zone multipactor autour de 6dB : vide amélioré ! on passe de 10^-9 à 6.10^-10 (V2, v3) V1 un peu aussi.
2e zone multipactor : autour de 14 dB. Il faut aussi la conditionner. voir le dernier graphe.
|
|
1008
|
Tue Feb 11 10:31:57 2025 |
ND, Marie Labat | Under Process | Shift summary | Diag |
|
Streak camera | | 9:20 Start aligning
12:40 Alignement done for both linac and ring.
Health check: Archiving not working
12:52 Start beam
Pb temperature gun and section
14:00 Beam on Cerenkov
Fixing misc. problems.
One motor of the MRSV mirror is dead.
17:30 Beam length measurement. t~15ps (convoluted with transport and focalisation)
*Note:*
- Time lost due to chiller problems
|
|
1009
|
Wed Feb 12 08:00:31 2025 |
KD MJ | Under Process | Shift summary | LI | TL | Linac Commissionning |
|
shift du 12 février 2025 - Alignements | | 8h: mise en chauffe à distance (modulateur, frigo, chiller, laser)
9h30: laser semble pas aligné dans l'iris avec une forme assez étrange (trou au centre) ==> énergie sortie laser PC 270uJ
9h35: la forme du laser sur la photocathode virtuelle semble etre revenu avec l'alignement M5.
10h: démarrage des alignements Quad et Photocathode.
Nouveau point Cathode : [H,V] = [4.46, 3.46]
--> Réglage 50MeV, min dispersion
** Mesure alignement vertical QP1-3, QP4-5 :
QP1-3 : TL/BPM.01 [x,y] = [-0.09,0]mm ; TL/YAG.01 [x,y] = [395, 265] pixels
QP4-5 : TL/BPM.01 [x,y] = [-0.1, 0.22]mm ; TL/YAG.01 [x,y] = [395, 263] pixels
On trouve faisceau dans QP4-5 "descendant" par rapport à QP1-3 (mauvais sens par rapport à la section) ==> impossible d'aligner QP1-3 sur la section sans désaligner QP4-5.
Delta entre axe QP1-3 et axes QP4-5 = 0.2 mrad (vertical)
** Mesure section alignee (strLi du elog 1002)
Axe section : TL/BPM.01 [x,y] = [-2.6,3.7]mm ; TL/YAG.01 [x,y] = [250, 67] pixels
Delta entre axe QP1-3 et axes section = 1.2mrad (vertical) ==> non cohérent avec les mesures précedentes (elog 1002)
==> elog 1002 du 22 janvier : il y a certainement eu une erreur de lecture de mesure du bpmTL1 pour l'axe section
Les autres mesures sont coherentes entre aujourd'hui et le 22 janvier (bpmLI, YagTL)
Plusieurs prises de mesures axes SECTION et Q1Q3 avec les valeurs de steerers suivantes :
- align section : cf. elog 1002 du 22 janvier
- align Q1-Q3 strLI H1 = 0.83
V1 = -3.26
H2 = -2.89
V2 = 3.50
==> Cf. reconstruction en screenshot
rouge : axe section
bleu : axe Q1-Q3 avec Q1, Q2 et Q3 OFF
vert : axe Q1-Q3 avec Q1, Q2 et Q3 ON
==> quand on reconstruit les axes verticaux QP1-3, QP4-5 et section on trouve les defauts suivant :
- section - QP1-3 : 1mrad (sans calib BPM), 0.5mrad (avec calib BPM : X = valeurBPM / 0.8)
- QP4-5 - QP1-3 : - 0.2mrad
==> les désalignement verticaux semble très faible (<1mrad), mais il y a un gros "shift" de l'axe section.
|
|
1010
|
Thu Feb 13 10:56:28 2025 |
ND, SC, Marie Labat, IC, VM | Under Process | Shift summary | Ring Commissioning |
|
Opérations caméra à balayage / MRSV | | 8h50 Mise en chauffe modulateur
Changement de la carte mère pour la badgeuse de la ligne X
31.2degres, toujours dAlignement laser dans la casemate
Canon complètement désadapté à 1200 et 1215V à la température de 31.6 degres, passage à 31.2 degres, toujours desadapté (cf screenshot) ???
Nous étions à 25Hz , passage à 10Hz.
Adaptation du canon ok
14h-15h: Tentative d'observation du rayonnement synchrotron sur la caméra à balayage. Le signal est visible en mode focus (sans balayage temporel) mais pas en mode avec balayage temporel. Est-il trop faible?
15h-18h: Optimisation du MRSV. Changement d'un miroir de renvoi qui était abimé, ajustement de la position de la lentille pour faire une image plus nette.
Lors du déplacement de l'anneau l'axe optique du MRSV a bougé.
Avec l'orbite par défaut, nous ne voyons que le bord du faisceau. Il faut changer l'orbite pour voir le centre du faisceua. Cf images jointes.
18:00 On laisse la machine à Hayg.
|
|
Draft
|
Fri Feb 14 08:21:26 2025 |
Entered by Super Team from 134.158.195.141 on Fri Feb 14 08:21:09 2025 | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
Draft
|
Mon Feb 17 11:00:01 2025 |
VM, IC, VK | Under Process | Shift summary | |
|
70 MeV WP | | 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 |
|
1013
|
Tue Feb 18 08:28:36 2025 |
VC, KD, VM, ND, RC, MJ | Under Process | Shift summary | LI | Linac Commissionning |
|
shift | | demarrage machine 8h30
intervention Kicker.. 8h45
10H30 fin intervention Kicker Ok
Gros pB de pilotage du Timing, Tango ne prend plus en compte les décimales de pilotage des retards, la machine n'est pas reglable à mieux que la micro seconde!!!!
18h00 Stop ThomX |
|
1014
|
Wed Feb 19 08:28:11 2025 |
Entered by Super Team from 134.158.195.141 on Wed Feb 19 08:27:57 2025 | Under Process | Shift summary | Ring Commissioning |
|
| | 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
|
|
1016
|
Thu Feb 20 08:25:11 2025 |
Entered by Super Team from 134.158.195.141 on Thu Feb 20 08:24:55 2025 | Under Process | Shift summary | Ring Commissioning |
|
| | 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 |
|
1017
|
Fri Feb 21 08:30:30 2025 |
shift crew | Under Process | Shift summary | Opt | Linac Commissionning | Ring Commissioning |
|
shift du 21 février 2025 | | 8h30 : démarrage machine en remote (modulateur, laser, chiller/frigo, cyclage)
Nouveau pb : variation du flux X lente
incomprehensible car cavite lockee et electrons stockes.
Le faisceau se deplace sur le dectris X_hutch lorsque le flux varie
Tests chqngement leger de frequence RF cavity :
- ** Avant 15h : 500.10045 MHz
- ** 15h : 500.1003 MHz ==> variation est devenue tres reguliere ...
- ** 15h26 : 500.100 MHz ==> idem, tres reguliere
Pas le meme comportement a 500.10045 MHz compare a 500.1003 et 500.100
On veut revenir a 500.10045
Miss triggers, puis juste apres plus de synchro du tout pour toute la machine !
Appel Vincent. Ronic teste la carte. Rien ne semble defectueux - Sur le gene 33 MHz, juste le fait d'appuyer sur le bouton ch1 ==> probleme resolu !
16h30 : Redemarrage faisceau
Retour a 500.10045 - Toukours pareil (fluctuation flux X)
17h23 "integrateur FPC" ==> BINGO !!!
17h45 : Optimisation position verticale table FPC
18h45 Scan flux 27000 pico ==> screenshot
19h20 fin de shift
|
|