Start of the modulator at 9h45

11h30 Problem with water regulation. Probably falseread of GUN PT100. Hayg and Viktor is tryig to adjust manually the temperature of the chiller for RF gun. We stopped at the settings as attached.

12h20 Trying to set-up the beam

13h Problem with the Linac Trigger Laser delay, laser pulse is after the RF pulse end (see screenshot attached). We tried to ajust the delays but inthis case the dark current is very large ~80 pC, bigger then the actual beam charge. We came back to the initial settings.

Not clear what has been changed since yesterday. Need help from the injector team.

15h30 Problem is solved. It was the wrong value of the Largeur pulse HT. The nominal value is 5 us.

16h Setting the injector and try to inject in the ring

Optimization of the TL. It would be really good to have the

- Closed dispersion

- Beam centered in the QUADs (at least 2 last ones)

The TL was set, so that we can inject with almost no losses (see screenshot)

Was difficult to get several turns. It turnned out that the kicket timig was not correct. Not clear who chqnge it.

19h We reistablished the storage and try to optimize it.