Beam Test Apr 24 2012

Getting Ready Punchlist

1) Get matlab ready for emittance measurement.

2) Install control box.

3) Clean up imaging system.

4) Determine dipole current setting.

Emittance Test

10 MeV

Energy is set by bending the beam to dipole at specific current.

Set dipole current for 10 MeV, and bend the beam. Tune the beam energy, until we see peak current at the 45 degree Faraday cup.

Tuning HRRL

1. Tune HRRL establish stable beam. One good tune earlier: [Tune HRRL]

Emittance measurement at 10 MeV

This is scan for 10 MeV beam. 40 mAmps peak current. Q1 is on, All other quads are off.

1) Scan from -5 Amps to 5 Amps. Increment at 0.2 Amps.

3) Name images by numbers start from 1. Then go on. Like: -5 Amp is 1, -4.8 Amp is 2, and so on til 5 Amp is named 51.

4) Scan multiple times from -5 to 5 Amps, and put them in different folders. Name folder by number, like 1, 2, 3 etc. After finishing one scan go back to -5 Amps. When going back take small steps (like 1 Amp), do not jump from 5 Amps to -5 Amps directly. After reaching back to -5, wait for few moment (like 10 s).

5) For each time, take back ground images. It should be done when RF is on and gun is off.

6) After the scan take a scope image for the current of the FC after the OTR screen. Lower the current, so the vacuum window do not heat up. This step is to check energy.

15 MeV

Energy is set by bending the beam to dipole at specific current.

Set dipole current for 15 MeV, and bend the beam. Tune the beam energy, until we see peak current at the 45 degree Faraday cup.

3 MeV

Energy is set by bending the beam to dipole at specific current.

Set dipole current for 15 MeV, and bend the beam. Tune the beam energy, until we see peak current at the 45 degree Faraday cup.

7 MeV

Energy is set by bending the beam to dipole at specific current.

Set dipole current for 7 MeV, and bend the beam. Tune the beam energy, until we see peak current at the 45 degree Faraday cup.