Re: About usrbdx

From: Alberto Fasso' (fasso@SLAC.Stanford.EDU)
Date: Wed Feb 18 2004 - 03:14:49 CET

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    I have just made a quick test: what you say is not correct.
    Logarithmic angular binning works perfectly well with
    WHAT(1) = +2 or -2:

    USRBDX +2.0 212.0 21.0 3.0 4.0 1.0 First
    USRBDX 10000. 0.01 10.0 6.2 0.01 10. &
    USRBDX -2.0 212.0 21.0 3.0 4.0 1.0 Second
    USRBDX 10000. 0.01 10.0 6.2 0.01 10. &

    Result:

       Bdrx n. 1 "First " , generalized particle n. 212, from region n.
    3 to region n. 4
          detector area: 1.0000E+00 cm**2
          this is a one way only estimator
          this is a current like estimator
          linear energy binning from 1.0000E-02 to 1.0000E+04 GeV, 10 bins (
    1.0000E+03 GeV wide)
    ===> logar. angular binning, first bin = 1.0000E-02 sr, upper limit
    6.2000E+00 sr, 10 bins ( ratio : 2.0430E+00)
          Data follow in a matrix A(ie,ia), format (1(5x,1p,10(1x,e11.4)))

    .............

       Bdrx n. 2 "Second " , generalized particle n. 212, from region n.
    3 to region n. 4
          detector area: 1.0000E+00 cm**2
          this is a one way only estimator
          this is a current like estimator
          logar. energy binning from 1.0000E-02 to 1.0000E+04 GeV, 10 bins
    (ratio : 3.9811E+00)
    ===> logar. angular binning, first bin = 1.0000E-02 sr, upper limit
    6.2000E+00 sr, 10 bins ( ratio : 2.0430E+00)
          Data follow in a matrix A(ie,ia), format (1(5x,1p,10(1x,e11.4)))

    Why don't you send your input? There must be something else wrong in it.

    Alberto Fass

    On Tue, 17 Feb 2004, [gb2312] wrote:

    > Dear users,
    > When I use the USRBDX card, I find some problem.
    > In the manual, when the first para equal
    > +1, linear in energy, linear in angle
    > -1, logar in energy, linear in angle
    > +2, linear in energy, logar in angle
    > -2, logar in energy, logar in angle
    > But in my use, the result is
    > +1, linear in energy, linear in angle
    > -1, logar in energy, linear in angle
    > +2, linear in energy, linear in angle
    > -2, logar in energy, linear in angle
    > the angle binning cant be logar, is it a bug???
    >

    -- 
    Alberto Fass
    SLAC-RP, P.O. Box 4349, MS 48, Stanford CA 94309
    Phone: (1 650) 926 4762   Fax: (1 650) 926 3569
    fasso@slac.stanford.edu
    

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