[Halld-cal] extraneous PHOTON_BEAM table in ccdb

[Sean Dobbs]

Hi Richard,

I'm glad to hear that those results are ready to go into the CCDB. From our
previous discussion I had thought it would be more convenient for the
simulation/reconstruction code to read the scaled energy values from one
table, which is the intent for the "scaled_energy_range" table at the top
level. The tables for the microscope and fixed array would be intermediate
storage areas which would be collated into the table at the top level. If
you'd rather go with just the two separate tables, we can drop the top
level one.

As for the missing pair spectrometer tables, I must have missed them. If
you can let me know what you need, I'll go ahead and add them.

Cheers,
Sean

On Saturday, June 28, 2014, Richard Jones <richard.t.jones at uconn.edu> wrote:

>  Hello Sean and all,
>
>  In browsing through the ccdb tables for the Photon Beam, most of the
> tables make sense, but one of them seems out of place.  There are
> "scaled_energy_range" tables for each of the microscope and fixed_array,
> but there is none for the pair_spectrometer. However, there is a
> scaled_energy_range table at the top level of PHOTON_BEAM with 340
> elements. What is that? Does that belong under pair_spectometer? If not,
> what does it mean? Where is the energy calibration of the pair
> spectrometer? We should have energies for right and left fine-segmentation
> counters in the PS.
>
>  I am about to enter some initial values in the scaled_energy_range
> tables for the tagger microscope and fixed array, based on work done
> recently by Dan Sober, so I can use these to write the correct tag hits in
> hdgeant. I want to make sure I put my numbers in the right spot that you
> foresaw for them. I think I understand everything you have put in there
> except what I highlight above.
>
>  thanks,
> -Richard Jones
>
>
>

-- 
Sean Dobbs
Department of Physics & Astronomy
Northwestern University
phone: 847-467-2826
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