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Jeremy,

That's a good point, but is it true also for beam energy for example.
By the way, magnet field settings are coupled to beam energy.

Stepan

On 6/4/14 5:39 PM, McCormick, Jeremy I. wrote:
> Thanks for the suggestions...
>
> I would think most of these values belong in the conditions database instead, retrievable as some kind of "run conditions" object.
>
> If we tag the files in the data catalog with all this kind of information, then actually managing this could be a huge hassle and time sink.
> They would need to be manually assigned to each data file somehow.
>
> Rather I would think you'd query the conditions system to find out which runs you're interested in based on these parameter values,
> and then feed the list of run numbers you get back to the scripts that find files in the data catalog.
>
> --Jeremy
>
> -----Original Message-----
> From: Francois-Xavier Girod [mailto:[log in to unmask]]
> Sent: Wednesday, June 04, 2014 10:31 AM
> To: McCormick, Jeremy I.
> Cc: hps-software
> Subject: Re: data catalog meta data
>
>
> Dear Jeremy,
>
> Some possible additions below, for consideration.
>
> Best regards,
> FX
>
> PS magnet current
> PS magnet position
> Frascati magnets current
> Collimator state
>
> Half-wave plate position ?
> DAQ live-time ?
> trigger bit prescale factors ?
>
> ----- Original Message -----
> From: "Jeremy I. McCormick" <[log in to unmask]>
> To: "hps-software" <[log in to unmask]>
> Sent: Tuesday, June 3, 2014 4:59:14 PM
> Subject: data catalog meta data
>
> Hi,
>
> I have started trying to sketch out what meta data fields we should have in our data catalog.
>
> Preliminary notes are here:
>
> https://confluence.slac.stanford.edu/display/~jeremym/HPS+Data+Catalog+Meta+Data
>
> This is based on some discussion with various people in the collaboration including Matt, Sho and Norman.
>
> If you have any reponse or additions then either comment on that page or send a message to this email list.
>
> Thanks.
>
> --Jeremy
>
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