[Mott] Mott work plan for today, Tuesday Feb. 11th

[Joseph Grames]

Our work plan for today, Tuesday Feb 11th will be to troubleshoot a few items on DAY and then continue with beam operations on SWING as detailed below:

DAY
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1. (Cade) - Mott control looks good, but the 5MeV dipole "Mott line" actually shows the 2D line controls (spectrometer).  Can you please edit to instead show the 3D line controls (Mott)?  Thanks.

2. (McGuckin) - Setup script worked, however, still waits on target ladder reaching set point even beyond when done manually.  Until target motion is working can you pull out code which has it waiting on target ladder, replace with a pop-up telling user to do task and "hit ok" to proceed?  Also, would not put Mott target video button IN, had to do manually.

3. (Cuffe) - Riad is going to speak with you today in some detail, but we seem to be having a latency issue in the Mott DAQ resulting in a higher busy time transferring data to disk.  This results in large "dead time", i.e. missing events.  We didn't have issue in December or earlier, appears since January and wondering if related to the new network we're on.

4. (Grames) - Will identify LCW spigots for Mott dump so Ron may begin assigning interlock wiring.

5. (Grames) - Will test MAD correctors in Mott line due to suspicious response.

SWING
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1. Recover beam at KE=5.0 MeV to Mott line, initially with P=P0<z> on 1um Au target <2uA CW.

2. Investigate (a) low L/R vs. U/D rates and (b) L/R instrumental asymmetry with 499MHz beam, looking for neutral axis

3. Investigate necessity/role of dump dipole; we are trying to run with OFF for symmetry reason.

4. Identify nominal 31MHz bunching/chopping settings to provide similar instrumental asymmetry, should be better than 499MHz with cut on elastic peak.

5. When instrumental asymmetry under control not progressing rotate polarization to vertical P=P0<y>

6. Begin systematic studies that retain KE=5.0 MeV crested (intensity, rate, position, angle)

7. If proceeding well, continue with systematic studies that adjust KE and spread (KE +/- , Crest +/-)