Hello Jeremy,

Here is the information on each of the entries in the CSV file and what the
data type is. Some of them already exist in the database and don't need to
be added, but the others do. Note that these are all hardware mappings and
are important so that if something goes wrong, we know what to fix and what
is connected to what. Having it in the event display provides an easy
look-up and an easy way to check if there are patterns if we start getting
odd results in the data output.

   - X/Y
      - These are the x- and y- indices for the crystals.
      - These correspond to your database's ix and iy values.
   - APD
      - This is the manufacturer number of the APD attached to a crystal.
      It can be used if we need to know what the specifications are for the APD
      at a later date.
      - These are integers from 1 to 516.
   - PreAmp
      - This is the number of the preamplifier attached to the crystal.
      Note that there are a few that have the same number, but use a different
      colored wire to differentiate them. These are the ones with the [NUM]red
      and [NUM]blue entries.
      - These are integers that range from 1 to 509. Some also have a color
      associated with them.
   - LEDchan
      - This is the channel for the LED associated with this crystal, which
      is used for LED commissioning and testing. This is useful because the LED
      GUI requires you to enter the LED channel to activate an LED and does not
      allow you to input an X/Y index, so having this makes it easy to look up
      the mapping between a certain crystal and the LED channel for
that crystal.
      - This is an integer between 2 and 223.
   - FADCchan
      - This is the crystal's channel on the FADC.
      - This corresponds the condition database's "Channel" field.
   - FADCslot
      - This is the crystal's FADC slot.
      - This corresponds to the condition database's "Slot" field.
   - Splitter
      - This is the identifier for the splitter associated with the crystal.
      - This is an integer ranging from 1 to 16.
   - HVGroup
      - This is the high voltage group for the crystal.
      - This is an integer from 1 to 28.
   - JOUT
      - This is a channel grouping.
      - It is an integer from 1 to 16.
   - MB
      - This is the motherboard to which the crystal is attached.
      - This has four values: RT, RB, LT, and LB. These represent:
         - R = Right
         - L = Left
         - T = Top
         - B = Bottom
      - The top two motherboards are wired to crate 1 and the bottom to
      crate 2condition database's "Crate" value of 1 and bottom to a value of 2.
   - Channel
      - This is the signal channel.
      - This is an integer that ranges from 1 to 230.
   - Gain
      - Ignore this; the value is not really sensible and the gain you
      already have is the one we should use.

Is JIRA the correct place to document this? Maybe a confluence page would
be better if it needs a permanent reference page?



On Wed, Dec 10, 2014 at 12:31 AM, McCormick, Jeremy I. <
[log in to unmask]> wrote:

> Hi, Kyle.
> Can you give me a simple list of these extra channel information fields
> that should be added which aren’t already present in the conditions
> database in the EcalChannel or EcaLed classes?  (see
> org.hps.conditions.ecal in conditions module)
> (It is hard for me to interpret exactly which fields need to be picked out
> of the CSV file.)
> It would be good to have a brief explanation of the field as well as a
> note about what the valid data values should like (e.g. a valid number
> range).
> Please add this information as a comment here.
> Once I have this information, then I can add a ecal_wiring table that will
> be able to contain this extra information keyed on channel_id.
> After this, I’ll need a text file mapping ecal_channel_id to the
> supplementary ECAL wiring information which can then be loaded into the
> database.
> Thanks.
> —Jeremy

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