Excel spreadsheet for the FEL settings is here.
- Prepare the hutch for the shift (done 1h before the actual start time)
- open the grafana dashboards located here (requires UNIX login/pwd) to access beam owner, energies and coatings
- no gate valve in the trajectory
- check in the vacuum windows that no gate valves from the NEH to the MEC hutch are IN (red)
- it is ok that the DG2 STP 1 is IN
- it is ok that the GL window is IN in MEC
open the rolling status and confirm that no devices upstream the hutch obstructs the beam
op.rs()
insert yag3 to provide a photon terminator before TCC prior to send any beam in the hutch
op.yag3.insert()
- confirm that the chamber is loaded with targets and being pumped down to be ready at the start of the shift
- search the hutch but leave SH6 IN (you are not the beam owner yet)
- 15 min before the shift begins, call ACR at x2151 to check
- look at current ACR beam operator on shift here
- confirm photon energy
- confirm pulse energy
- confirm pulse duration
- confirm beam mode
- confirm multiplexing mode
- ask for an e-loss scan
- getting ready to accept the beam:
- close DG2 STP 1
- make sure the reference laser is out (check in the rolling status)
- confirm the target chamber is pumped down
- insert the Be window IN the beamline
- search H6 if not already searched
- remove SH6 OUT of the beamline
- beamline alignment
- check 'MR1L3' mirror OUT (-6000) position (after XCS)
- insert YAG0 ([1] op.yag0.insert())
- confirm FEL beam is on scale "0"
- confirm the shape of the beam is round
- insert YAG1 ([1] op.yag1.insert())
- insert MR1L4 : check coating for photon energy
- confirm on yag0 that the beam is properly deflected on the scale "8 cm"
- remove YAG0
- remove all Si attenuators ([1] op.SiT(1))
- open the pulse picker ([1] op.pulse_picker("open"))
- fine tune the pitch of MR1L4 to center the beam on YAG1
- insert YAG3 ([1] op.yag3.insert())
- remove YAG1
- fine tune the pitch of MR1L4 to center the beam on YAG3
- once they are done tunning