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
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*** 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
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