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Thanks Kyle,


That sounds like exactly what I need. I'll let you know if I experience any difficulties or have any more questions.


Norman



From: Kyle McCarty <[log in to unmask]>
Sent: Wednesday, November 29, 2017 1:24 PM
To: Graf, Norman A.
Cc: hps-software
Subject: Re: Calorimeter indexing
 
Hello Norman,

You can get the row (iy) and column (ix) with the method CalorimeterHit.getIdentifierFieldValue("ix") or CalorimeterHit.getIdentifierFieldValue("iy"). This returns an integer between (if I remember correctly) -23 and 23 for ix and -5 and 5 for it. Note that iy = 0 is the beam gap and shouldn't ever occur, and that ix = 0 does not actually exist (so ix = 1 is adjacent to ix = -1).

For edge crystal identification, TriggerModule.inFiducialRegion(Cluster) should do what you want. (It returns true if a cluster is in the fiducial region, and false if it is an edge cluster.) If you are specifically working with hits, you can just copy the logic from the code. It should be pretty simple, since it ultimately checks the seed hit of the cluster to make the decision.

Let me know if this helps,

Kyle

On Wed, Nov 29, 2017 at 4:17 PM, Graf, Norman A. <[log in to unmask]> wrote:

Hello All,


I normally use the calorimeter CellID to identify calorimeter crystals, but I would like to know if there is a standard calorimeter cell indexing scheme that identifies individual crystals by their geometrical location, say, row and column? Is there a method that allows one to quickly tell that a crystal is on the edge (including the cutout region)? I.e. is there a row-column convention that locates a crystal? If so, is there a convenience method anywhere in hps-java that can return that convention given the CellID? Or the inverse? viz. given the long CellID, it returns row and column for a crystal?


Thanks,

Norman



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