[esa-t474] attempt at shiftplan

[Yury Kolomensky]

	Hi Bino,

this is a good start. Let me put a bit more meat into it:

Shift 1,2 (after initial beam tuning/centering with screens is done -- 
presumably day or swing 7/8/06)
   - Initial BPM checkout: signal sizes, frequency, attenuation
	- Offset beam by ~0.5 mm from initial orbit, look at signal amplitude 
and frequency
	- Access ESA if necessary to set proper attenuation (we will leave the 
attenuation as at the end of last run, but things may change with 
tuning)
	- Commission BPM 24 readout (energy)
- Calibration around nominal trajectory
- Measure BPM offsets relative to nominal trajectory
- Find optimal feedback setpoints to center on each BPM triplet

Monday 7/10/06: realign BPMs if necessary

Shift 3 (e.g. Monday swing, 7/10):

- Calibration, check alignment
- Find new nominal trajectory (center on BPMs)

Shift 4: Resolution studies:
	- Internal vs external clock
	- Resolution and inter-BPM offsets vs beam offset, bunch length, beam 
tune, beam energy

Shift 5,6 (preferably in a row)
	- Stability studies: long runs interspersed with calibration runs.
	- Develop automated calibration procedure (e.g. with button macro and 
DAC/ADC or EPICS readout of the corrector values)
	- Check relationship between BPM triplets

This should be enough for about the a week or a little more (assuming 
we get roughly a third of beam time). We can assess further studies, 
realignment etc. towards the end of week 1.

Yury



On Jun 30, 2006, at 6:48 AM, Bino Maiheu wrote:

>
> Hi all,
>
> Here's a very first attempt for a shiftplan for the T474 runs during 
> the
> coming run. Please edit/add/delete, so it can be sent to Mike as he
> requested.
>
> So from what Yury mentioned during yesterday's phonemeeting we would 
> have
> something like 10 shifts (about 1/3 of the run), right ?
>
> - first two shifts will be needed to check alignment, frequencies, 
> gammas
>   and so on. Would make sense i think to have these two shifts as the 
> very
>   first shifts of the entire run.
>
> - one shift checking internal/external clock issues (needed ??)
>
> - need two shifts (maybe more ??) for stability runs where we 
> basically do
>   nothing but calib - long stability run (say 20k events) - calib - 
> long
>   stability run - .... without changing parameters, accesses to ESA or 
> so
>   to study BPM/Calibration stability over multiple hours timescale.
>
> - study resolution at difference offsets (prob only part of a shift...)
>
> - ...
>
>
> cheers,
>
>      bino
>
> -- 
>
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