Re: [Fwd: Muon elastic scattering events]

From: Vittorio Boccone <>
Date: Thu, 23 May 2013 20:47:36 +0000

Dear Andrey,
  I'm looking at your problem.

In elastic collisions, there is no secondary generated unless there
is a recoiling atom. So calling USDRAW you will look for secondaries
in lead generated by muon elastic interactions, while from what I
understand you want to see all the elastic interaction in general.
Am I right?

I would suggest you to take back the default mgdraw and modify it to
track all the muons and instead and do a bit of post processing looking
for track variation.

Best regards

Dr. Vittorio Boccone - University of Geneva
o Address:
  UniGe: Département de physique nucléaire et corpusculaire
         24 Quai Ernest-Ansermet, CH-1211 Geneve 4, Switzerland
  CERN:  CERN, CH-1211 Geneve 23, Switzerland
o E-mail:
o Phone:
  Mobile: +41 76 487 5737
  UniGe:  +41 22 379 6357/6353
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On 18 May 2013, at 16:18, wrote:
> Dear FLUKA experts,
> I need to study probability of muon elastic scattering with large angle
> (>20 mrad) in lead.
> I have a setup of muon beam passing though lead target.
> I want to observe muon elastic scattering events, using USRDRAW user
> routine. I removed all the binary output from mgdraw.f template file, and
> put simple text output to standart log unit, like this:
>       WRITE(*,*)"usr=",ICODE," trk=",JTRACK
>       RETURN
> Also I put
> MULSOPT          0.0       0.0       0.0       3.0       1.0 99999999.GLOBHAD
> as recommended in the manual, to substitute MCS with single scattering
> everywhere.
> In the output I get lots of delta-ray production e.t.c., but I do not get
> any elastic scatterin("usr= 100") in my output.
> Is single scattering supposed to trigger USRDRAW? Or is there any
> other way I could get information about single scattering events?
> Thank you in advance,
> Andrey Sheshukov.
> INFN, Sez. di Napoli<mu_test.inp><rock.geo><mgdraw.f>
Received on Mon May 27 2013 - 12:49:58 CEST

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