Re: Analysis Note #18

From: Peter H. L. Christiansen (pchristi@nbi.dk)
Date: Mon Nov 20 2000 - 14:45:42 EST

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    Hi Fouad
    
    Nice analysis note.
    
    A few comments :
    
    Parameters : I understand why you change TsigHigh. Clusters with this
    time sigma is just large clusters, but I don't understand why you touch 
    the time low cut.
    Your search windows are quite large. Especially it surprises me that
    SearchWidthY < HitSearchWidthY. I could imagine for TPM2 a large search
    width in y could give extra tracks because of large wrong resistor
    effects, but for TPM1 I would only think you would get in trouble with the
    number of track candidates.
    I prefer tracking method 1;) What is cluster method 0 ?
    BTW : My mean for trigger 6 in TPM1 is ~ 1.5-2.0 tracks per event whereas
    in TPM2 there can be larger differences 0.04 - 0.10 (maybe even higher).
    I think there is some work on the calibration part before we can get a
    more precise number;(
    
    The non proportional effect you see for high multiplicities must be
    because of to many track candidates. If you use less wide cuts (at least
    for TPM1) I am sure the number of time it fails will go down (I only see
    fails now for T1 and T2 using 0.4 for both HitSearchX and HitSearchY).
    
    Cheers
       Peter
    
    :-) --------------------------------- )-:
    |Peter H L Christiansen aka PAN @ NBI	|
    |EMAIL  : pchristi@nbi.dk		|
    |OFFICE : Tb1 @ NBI			|
    |PHONE  : 353 25269			|
    |SNAIL  : Hans Tavsensgade 35, 4th	|
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    :-D --------------------------------- \-:
    
    On Sat, 18 Nov 2000, fouad.rami wrote:
    
    > 
    >   Dear Collaborators,
    > 
    >  This mail just to inform you that a new analysis note (AnNote#18)
    >  has been posted today on the Brahms WEB page at -->
    >       http://www.rhic.bnl.gov/brahms/WWW/private/AnNotes/Index.html
    > 
    >  If you need any further information on the results 
    >  presented in this note, please don't hesitate to 
    >  ask me (fouad.rami@ires.in2p3.fr).
    >  Comments/criticisms/suggestions are welcome.
    > 
    >    Best regards,
    >                         Fouad
    > 
    >  
    >  *************************************************************************
    >  *  Fouad RAMI                        e-mail : fouad.rami@ires.in2p3.fr  * 
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    >  *     FRANCE                                                            *
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    > 
    > 
    



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