Goals:
- Work on the BLM to have the signals at the injection and from the arc in the ring.
- Study on the ring injection and beam storage at higher beam charge. Check the linearity.
09h35 Thomx was started: modulator, frig, laser
09h41 Chilers were started, all magnets cycling
10h47 HV is 'ON'
10h57 Hv is 'OFF', Access to the bunker
12h10 HVis 'ON'
RF gun phase was set to 198 dg., sect phase 206 dg., Sect Att. 2.62 dB, Chgarges: -59 pC, -59 pC, -64 pC, laser att. 270
13h13 Unable to get the beam into the ring. Change kickers back.
14h40 HV is 'OFF', Access to the bunker to check/reconnect the BLM
The "Extraction" kicker did not allow to store the beam. Maher exchanged the kicker PS back.
Restart. Ring tuning is OK.
Gradual increase of the charge from the RF gun. Tuning and measurements of the charge in the ring (integral of the TbT sum signal @2k turns). Please, see the plot attached.
We made 4 points. For each one, the solenoid, TL quaqrupoles and steering and injection were changed by looking at the BLM signal (ring injection). Ring kept unchanged.
A special attention should be given to the transport efficiency (and emittance), when increasing the charge.
18h Stop THOMX
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