Re: [BLAST_ANAWARE] cerenkov analysis puzzlement

From: Chi Zhang (zhangchi@MIT.EDU)
Date: Wed Jul 21 2004 - 15:53:41 EDT


I believe when more than one CC are fired in one sector, ncl/r is set to
4. As the case when more than one TOF is fired, ntl/r is set of 16 in
that sector.

On Wed, 21 Jul 2004, Aaron Joseph Maschinot wrote:

>
> when i look at the hit cerenkov number (i.e. ncl and ncr), i get values
> ranging from 0 to 4, inclusive. it is my understanding (perhaps wrongly)
> that we have three cerenkov boxes on either side with ncl/ncr value
> running from 0 to 2, inclusive. if this is so, does anyone know why
> ncl/ncr values of 3 and 4 also show up? perhaps there is a cerenkov box
> in front of the bats. however, if so, it is only one cerenkov box,
> not two, right? it might account for an ncl/ncr value of 3 but not 4.
> also, when i look at the TOF's ntl/ntr value for particular values of
> ncl/ncr, i get pretty much nonsense when ncl/ncr equals 3 or 4.
>
> aaron
>
>



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