Mesures après remontage de la cale : 1215 V sur le modulateur. ça tient mais encore des claquages dans le Canon à 0dB. Il faut faire travailler encore un peu demain. 

la suite demain

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 

The code for laser alignment does not work properly --> done by hand 
H 5.244
V 4.654

phiMax section = 224 

position change (yag screen in pixels)  vs delta phase 

Sole 230: 

Eps X: 

  emit_norm  : 1.3682 mm.mrad
  beta       : 19.51 m
  alpha      : -6.673

Eps Y: 

emit_norm  : 1.7366 mm.mrad
  beta       : 10.60 m
  alpha      : -3.606
 

Scan_QP0118h01.mat : 230

Scan_QP0118h09.mat : 240

Scan_QP0118h22.mat : 235

Scan_QP0118h26.mat : 225 

Scan_QP0118h31.mat : 235 : 

Scan_QP0118h31.mat : 235 : gain 0 

Scan_QP0118h36.mat : 240  : Gain 0 

18:40 stop

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

Le cyclage de RI-C1/QP.08, RI-C1/QP.11 et RI-C2/QP.03 ne démarre pas tout seul (action nécessaire sur le boutton cyclage de l'élément).

Programme - Etude "IP dromadaire" ==> Scan pos horizontale FPC + phase 

Positions FENTES2/HEXA des 2 derniers shifts :
    Pos FENTE2 :    [H , V]  = [-3 , -10.20]
    Pos HEXA ech : [Tx , Ty] = [+79 , +31]

10h00 Beam is in the ring W/O RF, -120 pC, receipt saved: recipe_recipe_LI_TL_RI_all_20260217_09_44_16.txt on the base of reference for 50 MeV

recipe_recipe_LI_TL_straight_all_20260217_10_08_07.txt for the linac and the TL stright part

RF 100 kV phase -48.5 dg.

10h35 Standby, Changing the FPC controller

11h23 HV is on

11h40 RCDSon injection

11h59 RF gun phase 23 dg., Sect. Att. 2.39 dB, Phase 230 dg., Charges: (ICT) from -120 to 140 pc, (BPMs) -137, -137, 137, 137 pC

tunes: H 0.166, V 0.71

12h26 tunes: H 0.167, V 0.72. MRSV size is very sensetive to injection settings

At around 2:45 p.m., the power to the ring dipole went out.

16h42 RF 280 kV, phase -50 dg. Streak camera measurements for 100 kV and 280 kV

Orbit bump to change orbit tilt around IP

18h59 Stop ThomX

7h40: mise en chauffe en remote (frigo/chiller, modulateur, laser, cyclage)

8h40 HV ON

10h20 recipe_recipe_LI_TL_RI_all_20260218_10_18_05.txt saved ,

15h15 Li/ps/str03-V steers the beam verticaly "-" UP, "+" Down. Li/ps/str03-H steers the beam horizontaly, "+" <==, "-" ==>
16h44 Laser new position : [5.112, 4.423]

Align QP-Linac
Quad scans : depends on camera settings ...

Matching from calculated twiss in attached file.  

19:10 : End

7h30: mise en chauffe en remote (chillers/frigo, modulateur, laser, cyclage)

08h55 HV is ON

09h29 Beam is in the ring W/O RF. the receipt loaded:  recipe_recipe_LI_TL_RI_all_20260218_12_34_02.txt (big bump verticaly around IP)

09h30 RF 50 kV, cavity is tuning (to far)

09h41 RF ==> 100 kV. RF Gun phase 21 dg., Sect. att. 2.36 dB, secr. phase 216 dg.  Charges: (ICT) about -100 pC, (BPMs): -115, -110, -134, -115 pC, Linac steerers: H [-0.16 -2.76 0], V [-2.35 3.31 0]

RF ==> 150 kV, ==> 280 kV

09h59 the receipt loaded: recipe_recipe_LI_TL_RI_all_20260218_10_18_05.txt (with small angles around IP)

12h50 receipt loaded: recipe_recipe_LI_TL_RI_all_20260217_09_44_16.txt

16h01 recipe_recipe_LI_TL_RI_all_20260218_12_34_02.txt loaded (see screenshot)

17h25 Stop ThomX

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

08h57 HV is on

09h22 Beam is in the ring W/O RF, recipe_recipe_LI_TL_RI_all_20260219_13_17_17.txt loaded

09h25 RF 100 kV

09h42 F gun phase 23 dg., Sect. att. 2.47 dB, Sect. phase 218 dg., charges (ICT): about -100 pC, charges(BPMs): all -105 pC

The receipt saved: recipe_recipe_LI_TL_RI_all_20260220_10_42_56.txt ==> Vert. around IP +3 mm to -2 mm

The receipt saved: recipe_recipe_LI_TL_RI_all_20260220_10_43_52.txt==> Vert. around IP -1 mm to +1 mm

12h17 Standby

13h31 HV is on. Shunt resistors were removed from the dipoles 

14h28 Standby. Shunt resistors of 15.4 Ohm installed

15h09 HV is on. Charge dropped. Laser att. 244 ==>260 to restore 100 pC

7h40: mise en chauffe en remote (frigo/chillers, modulateur, laser, cyclage)

*** Programme ***

- repartir de la recette "iniale" de jeudi avec un grand angle vertical à l'IP

- trouver le point de "bascule" horizontal de l'IP avec la CFP (point immobile en fonction de la phase CFP)

- Changer l'angle vertical pour trouver le minimum acceptable pour les spectres (par dicotomie)

08h36 HV is on

09h30 recipe_recipe_LI_TL_RI_all_20260218_12_34_02.txt loaded. RF Gun phase 42 dg., Sect. att. 2.57 dB, phase 213 dg. Linac steerers: H [-0.09 -2.76], V [-2.39 3.23], Charges (ICT) about -100 pC, BPMs - about -100 pC. RF cavity phase -33 dg.

09h50 Ramp to 280 kV

Laser phase appears unstable

10:34 AM Vertical orbit bump applied

13h41 RF cavity ramp down to 150 kV

18h00 Standby

The additional shunt resistor installed on third DP.

19h27 HV is on

19h40 Standby

The additional shunt resistor installed on sixth DP.

20h00 HV is on

20h20 Standby

The additional shunt resistor was removed on sixth DP.

20h52 HV is on

21h30 RF gun phase 87 dg. Sect. att. 2.442 dB, Sect. phase 222 dg. Charges (BPMs): around -110 pC, unstable.   Linac steerers: H [-0.19 -2.67], V [-2.43 3.30], RF cav. 150 kV, -33 dg.

22h30 Dispersion measurement

22h50 Beta functin  measurement

Data save in filename /tmp_mnt/data/iryna.chaikovska/mml/measdata/THOMX/StorageRingdata/QUAD/QuadBeta_2026-02-24_22-44-21.mat 
Tunes before mesurement nux = 0.1692 nuz = 0.7226 
Tunes after  mesurement nux = 0.1676 nuz = 0.7265 
maximum betabeat dbxobx = 32.7 % dbzobz =  6.8 % 
rms betabeat bx = 12.3 % rms bz =  2.9 % rms 

Frequency scan from 500.078 MHz to 500.124450 MHz

02h16 ThomX was stopped

7h30: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

*** Programme *** : 
          - Check spectres OnAxis, V+25 et V+40 apres resistances dipole installe hier soir    (pas fait)
          - Alignement et 1ere prise d'image TRANSFOCATEUR sur orbite de référence              (fait)

8h30 : on charge la recette "all_20260224_14_54_20"

Flux tres bas (3000-4000)

Adjustement chroma ==> Recette 20260224_15_49_43_adjust_chroma

     Flux toujours tres bas :      3000-4000 ph/s
     Taille verticale scan FPC   230um RMS
     Streak :                              240 ps

     On ne peut pas demarrer le shift

16h16 Several recipes were saved with adjusted settings for the linac and ring orbit. Flux I3+I4 riched of 20000 pA, but they became unusable after a few minutes due to instability.

17h36 Receipt recipe_recipe_LI_TL_RI_all_20260225_17_33_57.txt saved with comment: 20260225_for_transfocator_align
Recipe saved in References recipes : Transfocator_20260225_17_33_57.txt
Alignement transfocateur et Prise d'image - Racks in/out

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

Code redpit phase laser a change
il reste a redemarrer la carte

08h35 Warm-up ThomX: Modulator, Laser, Fridge

Programme shift : verifier que la recette orbite plate utilisee lors du shift du 24/02/2026 (= orbite PLATE, vers 15h) est toujours ok apres l'ajout de resistance sur dipole anneau (resistance installee apres le shift, = le 24/02 au soir)

08h40 Chillers were started, cycling all magnets.
09h47 HV is on but there are no triggers. Failed to connect to device li/op/opt.02-las.01-asp.01. The photocathode laser control mashine is off.
10h10 The photocathode laser control mashine is on. The laser amplifier was started.
10h29 Misstriggering caused modulator interlocks
10h44 It is OK with triggering, exept the photocathode laser.
11h15 Laser is ok, phase 133 dg.

11h48 The laser spot moves out of the screen, Hayg fixed it

12h35 Transfocator_20260225_17_33_57.txt loaded. Linac steeres were adjusted. Laser phase 127 dg., Sect. att. 2.532 dB, sect. phase 225 dg. linac steerers: H [-0.21 -2.66], V [-2.47 3.32], RF 100 kV, phase -39 dg., charges around -100 pC

On ne voit pas le centre du faisceau X sur DECTRIS - Trop allonge verticalement
Viktor "ajuste" la recette ==> on voit un tout petit petit petit peu mieux le centre ...
Flux < 5000  .....
Scan FPC ==> faisceau enorme cf screenshot 1_scanFPC_recipe_ou_on_voit_le_centre.png

Retour recette du depart orbites a peu pres plates plates
Flux minuscule
Scan FPC ==> faisceau enorme cf screenshot 2_scanFPC_receipe_FLAT_centre_pas_visible.png

Optimisation phases etc par Viktor
Flux minuscule
Scan FPC ==> faisceau enorme cf screenshot 3_scanFPC_receipe_FLAT_OPTIM_centre_pas_visible.png 

16h58 Standby, removing the additional shunt resistor from the bend #3

17h42 HV is on

18h00 recipe_recipe_LI_TL_RI_all_20260224_14_54_20.txt loaded
Faisceau a peu pres au centre du tube
Flux ~ 20.000
Comparaison avec shift du 24/02 (spectre onaxis et V+40) ==> cf screenshot compar_20260224_20260304_after_cut_resistance.png 
==> c'est OK, spectres tres similairees

18h26 ThomX stopped

CONCLUSION : impossible d'obtenir un faisceau electrons correct avec la nouvelle resistance. Retirer la resistance a permis de retrouver les resultats du 24/02

DEMAIN : demarrage des etudes matching a ce point de fonctionnemenet
A 100 pC
  - Sol 230
  - Sol 242
  - Sol 250 100 pC,
puis SOL 230 a 200 pC 

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 
 

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 

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 

10h53 beam is in the ring. Laser phase 101 dg., Sect.  Att. 2.533 dB, sect. phase 223 dg. (mot. pos. 1710. 223-60 dg. mot. pos. 1254 )

11h34 Breakdowns in the gun. Low SF6 pressure (2.2 bar)

13h38 Jean-Noel fixed it

13h48 HV is on

14h41 Gun charge is very ubstable and low. Breakdowns in the gun.

15h06 RF gun att. 3 dB

15h10 RF gun att. 2 dB

15h13 RF gun att. 1.5 dB

15h16 RF gun att. 1 dB. Can't move on. 

15h19 Shutter was closed

15h24 RF gun att. 0.8 dB

15h28 RF gun att. 0.4 dB

15h29 RF gun att. 0.2 dB, breakdowns, go back to 2 dB

15h51 50 pps 2 dB

16h02 It gets worse 

16h03 12.5 pps.

16h25 RF gun att. 0.5 dB

17h00 RF gun att. 0.8 dB

17h53 RF gun att. 0.0 dB, pulse width 2 us, breakdowns

17h58 RF gun att. 0.0 dB, pulse width 2.7 us, dark current 30 mV, solenoid off

18h00 RF gun att. 0.0 dB, pulse width 3 us, dark current 30 mV (it used to be around 18)

18h17 The laser spot on the cathode, the solenoid on, charge is low. There are breakdows at the new spot position.

18h20 ThomX was stopped

8h: mise en chauffe en remote (cyclage, modulateur, laser, frigo/chiller)
clients et réseau très lent ==> reboot à faire sur TOUT les clients (client1 à 100% de la mémoire de prise)
09h28 HV is on

10h02 Beam is in the ring W/O RF. recipe_recipe_LI_TL_RI_all_20260224_14_54_20.txt loaded. Linac steerers adjusted
10h15 RF 100 kV, phase -39 dg.
11h03 Charges ~100 pC, laser att. 320

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

Les 2 det Dectris et photonic sur bras detecteur

Changement de position du CdTe sur l'hexa ech  ==> Nouvelle correspondance Fentes2 / Hexa : Hexa [70 , 20]  Fente2 [4 , -19]
Check : 1 spectre OnAxis, 1 a V+40, 1 a H+40

Calibration bras détecteur TZ : 1m = 79 777 pas moteur

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

Alignement TRANSFO centre faisceau avec les 2 pinholes

12h25  Mesure taille de source

5 images Photonic tous les 20000 pas (~ 1 m d'excursion en Z ,  Z=0 correspond au point echantillon)
AVEC PINHOLES :

R 17 + 22 + 28 ==> 5 images Z = 0 , 20000 , 40000 , 60000 , 80000
R 17 + 22                   "
R 17                           "
R 28                           "
R 22 + 28                    "
R 22                           " 
R 17 + 28

Alignement diode calibree centre faisceau - Fentes2 refermee autour de la diode - Mesures flux diode calibree

Pinholes : 13h53 - 54
Pin + R17+22+28 : 13h54 - 55
Pin + R17+22 : 13h55 - 56
Pin + R17 : 13h56 - 59
Pin + R17+28 : 14h00 - 01
Pin + R22+28 : 14h02 - 03
Pin + R28 : 14h03 - 04
Pin + R22 : 14h05 - 06

Photonic au point echantillon  - R17+22 AVEC PINHOLES ==> Fentes 2 : ouverture [1 , 0.4] mm = tout le faisceau
                                                                                                                                 [0.5 , 0.2] mm
                                                                                                                                 [0.25 , 0.1] mm

Diode calib au point echantillon - Mesures

SANS LENTILLES - AVEC PINHOLES

Fentes 2 = [1 , 0.4] 14h32 - 33
                [0.5 , 0.2]  14h33 - 34 
                [0.25 , 0.1]  14h35 - 36 

SANS LENTILLES - SANS PINHOLES

Fentes 2 = [0.25 , 0.1]  14h36 - 37 
                [0.5 , 0.2]  14h38 - 39
                changement de calib du PICO 
                [1 , 0.4] 14h42 - 43

SANS Fentes2 - SANS PINHOLES

Avec R17 -14h44 - 47
Avec R17+22 14h48 - 49
Avec R17+22+28 14h49 - 50

5 images Photonic tous les 20000 pas (~ 1 m d'excursion en Z ,  Z=0 correspond au point echantillon)
SANS PINHOLES :

R 17+22+28 (==> 5 images Z = 0 , 20000 , 40000 , 60000 , 80000) ,
R 17+22
R17
R 28
R 22+28
R22
R17+28

Mesure taille de source fentes1 (15h40)

Some Quad scans with variying the Iris opening.

Data :

• 17h17 : 2mm 120 pC
• 17h31 : 1.3mm 100pC
• 17h46 : 1mm 80pC
• 18h00 : 1mm 100 pC
• 18h27 : 1mm 100 C Sole 240 
• 18h41 : 1mm 100 C Sole 245

8h: mise en chauffe de la machine en remote (modulateur, laser, frigo/chillers, cyclage)

*** Programme ***

- Prise de données MonoChromateur. 

09h04 HV is on

recipe_recipe_LI_TL_RI_all_20260311_13_12_06.txt loaded

09h43 Beam is in the ring W/O RF

10h16 RF 100 kV, phase-42 dg. Charge is oscillating -100 pC to -120 pC. Laser att. 316, RF gun laser phase 148 dg., sect. phase 222 dg.,

10h36 Laser phase 140 dg., Sect. 223 dg.

12h16 RF 100 kV, phase-46 dg. Charge is oscillating -100 pC to -120 pC. Laser att. 316, RF gun laser phase 142 dg., sect. phase 223 dg.,

15h48 RF 100 kV, phase-46 dg. Charge is oscillating -100 pC to -120 pC. Laser att. 316, RF gun laser phase 132 dg., sect. phase 224 dg.,

17h27 ThomX was stopped

Alignement CdTe On-axis a l'oeil
Prises spectres ouvertures fentes2 0.3x0.3 : OnAxis , V+40 , H+40 , H+20 , V+20 , H-20 , H+20 , V-20

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

Alignement MONO parallele au faisceau : Hexa mono Ry_mono = -0.1 deg

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

Fente2 OnAxis

Ry = - 2.6 - 0.1 deg (43.6 keV code Kilperic)  - R_sample = 5.2 deg

Spectres Fentes2 ouvertes ** 1 x 1 mm
                                         ** Max

Ry = - 2.5 - 0.1 deg (44.3 keV code Kilperic)

Spectres Fentes2 ouvertes ** Max
                                         ** 1 x 1 mm
                                         ** 0.5 x 0.5
                                         ** 2 x 2
                                         ** 3 x 3

Ry = - 2.45 - 0.1 deg (46 keV code Kilperic)

Spectres Fentes2 ouvertes ** Max
                                         ** 0.5 x 0.5
                                         ** 2 x 2

Mesure du flux diode calib avec et sans MONO

SANS MONO
    Fentes2 ** 1 x 1 mm 12h50-51
                 ** 2 x 2  12h51-52
                 ** 3 x 3  12h52-53

Avec MONO : IMPOSSIBLE trop de bruit de fond

Mesure du flux avec DECTRIS

Ry = - 2.45 ==> Images 404 et 405 (13h11)
Ry = - 2.5  ==> Images 406 et 407 (13h12)
Ry = - 2.6  ==> Images 408 et 409 (13h13)
REF Ry = - 0.1 ==> Images 410 et 411 (13h18)

Fente2 V+40

Ry = - 2.9 - 0.1 deg (39 keV code Kilperic)

Spectres Fentes2 ouvertes ** 1 x 1 mm
                                         ** Max
                                         ** 2 x 2

Mesure du flux avec DECTRIS

Ry = - 2.9 ==> Images 415 et 416 (13h41)
REF Ry = - 0.1 ==> Images 418 et 419 (13h43)

Prise spectre ref a V+40

Fente2 V+70

Ry = - 3.8 - 0.1 deg (30 keV code Kilperic)

Spectres Fentes2 ouvertes ** 1 x 1 mm
                                         ** Max
                                         ** 2 x 2
                                         ** 5 x 5
                                         ** et divers autres

Fente2 H-37

Prise spectre ref a H -37

Pour Ry = - 2.9° (angle mono), R_sample = 6.5° (2theta)

Spectres Fentes2 ouvertes ** 2 x 2 mm
                                         ** Max

Fente2 H-64

Prise spectre ref a H -64

Pour Ry = - 3.8° (angle mono), R_sample = 8.5° (2theta) ==> Emean ~ 27keV

Pour Ry = - 3.2° (angle mono), R_sample = 7.3° (2theta) ==> Emean ~ 31.5keV

Fente2 H+36

Prise spectre ref a H +36

Pour Ry = - 2.9° (angle mono), R_sample = 5.5° (2theta) ==> Emean ~ 42keV

Pour Ry = - 3.2° (angle mono), R_sample = 6.1° (2theta) ==> Emean ~ 38keV

Programme : Etudes points Matching
==============================

Fentes2 centre faisceau a l’œil [H , V] = [7 , -18]

(Mot Det Ty = 10000 , TX = 0)

Orbites e- : idem que le 12/03 et le 11/03 (plate en Y, tout petit angle en X)

Check meilleures position de X_fpc 

X_fpc de -1.4 a -1.7 , prise de spectres V+40 et OnAxis 

- Ne change pratiquement rien aux dromadaires V+40

- On se place à X_fpc = -1.7 mm

DISTANCE Hexa_ech - Photonic = 43 cm

Sol = 230, iris=1.3

** Flux ~ 18000 (~ 12000 I3, ~ 6000 I4)

** Spectre OnAxis

** Mesure de taille source Photonic

(Mot Det Ty = 12000 , TX = 18000)
(Fente1 Hpos = -10.5 / Vpos = 2 / Hapert = 6 / Vapert = 5)

LSF [H , V] = [52 , 132]  um

** Long paquet : 87 ps inj à 190 ps (FWHM)

** Quadscan Q1 :

Emit [x , y] = [1.8 , 1.8]
Beta [x , y] = [6.5 , 4.7]
alpha [x , y] = [-2 , -1]

Sol = 242, iris=1.0

** Flux ~ 8-9000

** Mesure de taille source Photonic

LSF [H , V] = [69 , 197] um 
LSF [H , V] = [68 , 188]  um               MOINS BON

** PAS de prise de spectre

** Quadscan Q1 :

Emit [x , y] = [2.3 , 3.6]
Beta [x , y] = [54 , 44]
alpha [x , y] = [-11 , -8.5]

Avec autre fit du quadscan Q1 (Sol = 242, iris=1.0)

Emit [x , y] = [3.9 , 5.8]
Beta [x , y] = [32 , 26]
alpha [x , y] = [-7 , -5.4]

** Flux ~ 9000 (6000 I3 , 3000 I4)

** Mesure de taille source Photonic

LSF [H , V]  = [66 , 192] um
LSF [H , V] = [63 , 186] um

** 1 spectre OnAxis

** Long paquet : 100 ps inj à 200 ps (FWHM)

MOINS bien que Sol = 230

Sol = 238, iris=1.0

** Quadscan Q1 :

Emit [x , y] = [2.4 , 1.7]
Beta [x , y] = [31 , 40]
alpha [x , y] = [-6 , -8]

** Flux ~ 10000

** 1 spectre ONAxis

On passe l’iris de 1.0 à 1.3, avec même optique

** 1 spectre ONAxis

** Flux ~ 10000

MOINS bien que Sol = 230

Retour a Sol = 230, iris = 1.3

** Prise de spectres

V+20 / V-20 /  V-20 H+20 / H+20 / H+20 V+20 / H-20 V+20 / H-20 / H-20 V-20
V-40
V+40
H+40

** Mesure de taille source Photonic

LSF [H , V] = [67 , 168] um

8h05 : mise en chauffe en remote (frigo/chillers, modulateur, laser, cyclage)

*** programme : Mesures : sol 230 100 pC

- Taille vert. e- (FPC)   ==> FAIT        (sigma = 110 um RMS stat / 102 um gauss)      --> Taille ele V = 85 um

- Spectre angulaire sur 6-7 mrad ==> FAIT
       Carre de 30 x 30 mm autour de l'OnAxis a l'oeil : ouverture fente2 0.3x0.3 mm
       Au dela : ouverture fente2 0.4 x 0.4 mm

- Diode_Calib (flux On-Axis) - PAS fait (I3 et I4 suffisent)

- Taille_Source photonic  ==> FAIT  - DISTANCE Hexa_ech - Photonic = 43 cm
       LSF [V , H] = [135 , 52] um
       LSF [V , H] = [136 , 53] um       --> Taille ele [H , V] = [143 , 81] um

- Longueur e-  ==> FAIT                      ~ 100 ps au debut,  200 ps end (fwhm) ==> 85 ps RMS

- Emitt_Linac (QuadScan Q1) - PAS fait, les mesures emittances sont chaque fois de l'ordre de  2-3 mm.mrad ...

     - Puissance FPC ~ 85 kW
     - Flux : I3+I4 ~ 15000 - 18000 ==> 1.1 - 1.3 10^10 ph/s

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

09h09 HV is on

09h41 recipe_recipe_LI_TL_RI_all_20260311_13_12_06.txt loaded, linac steerers adjusted. Beam in the ring W/O RF, ring saved 

09h49 RF 100 kV phase -42 dg. Charges around -100 pC, RF gun phase 172 dg., Sect. att. 2.4 dB , phase 224 dg. linac steerers: H [-0.2 -2.72], V [-2.54 3.14]

8h: mise en chauffe en remote (frigo/chillers, laser, modulateur, cyclage)

*** Programme : Mesure spectre et monochromateur à 61.5MeV (70MeV si le temps le permet)

61.5 MeV

09h35 HV is on
photocathod laser phase 62 dg.  The receipt 61p5MeV_20250703_12_56_55.txt loaded, going to 61.5 MeV (interlocks)
10h13 Beam is on TL/SST02. Sect. att. 0.992 dB, sect. phase 236 dg.
10h30 Aligned with QP1 - QP3, linac steerers: H [-0.2 -3.02], V [-2.55 3.22]
11h05 Beam is in the ring W/O RF with all ring correctors set to zero

RF 100 kV storage is good, but can't correct the orbit  at 61.5 MeV :  le faisceau est presque hors du tube ==> Try to go to 70 MeV

70 MeV

13h20 RF processing the section on 25 pps by increasing pulse length from 1 us to 3 us
13h56 70 MeV, Linac steerers H [0.21 -3.75], V [-2.84 3.33], sect. att 0.18, phase 255 dg. laser phase 56 dg. (On the base of 70_MeV_Vert_tune 0.66_good_20251212_13_56_38.txt)
16h17 recipe_recipe_LI_TL_RI_good_20260318_16_17_14.txt saved, screenshots, RF 100 kV, phase -36 dg., Freq. 500.031645 MHz

L'orbite n'est pas la meme que pour 50 MeV  ==> Checks spectres dromadaires a V+40 

X_fpc = -1.5 / -1.3 / -1.7 / -1.9 / -1.1  mais on a oublie d'ajuster la phase a chaque fois  .... meme phase (3.0 V) 
X_fpc = -0.9 / -0.7 / -0.4 / -0.2 / -0.5  en ajustant la phase a chaque fois
Cf les 2 screenshots "Spectre 70 MeV"

On se place a X_fpc = -1 mm (pas top mais dans l'urgence on se met la)

Fente2 centrees a l'oeil : [H , V] = [11 , -23]
Prise de spectres a +/- 10 en H et V  (a voir ce que ca donne offline)

17h56 ThomX was stopped