Re: [fluka-discuss]: Primary Vertex electro-magnetic showers ?

From: Alberto Fasso' <>
Date: Tue, 30 Jun 2015 05:52:29 -0700 (PDT)

On Tue, 30 Jun 2015, Mikhail Polkovnikov <?????? ???????????> wrote:

> On 30.06.2015 13:48, Mikhail Polkovnikov <?????? ???????????> wrote:
>> On 30.06.2015 10:33, A_Rogov wrote:
>>> Hello Fluka-discuss,
>>> Hello Fluka-discuss,
>>> I would like to find the position of the primary
>>> vertex of electro-magnetic shower.
>>> How can I extract this information from Fluka?
>> I think it could be done with MGDRAW user routine by using EEDRAW or maybe
>> USDRAW entries.
>> The coordinates XSCO, YSCO, ZSCO will mark the position of interaction.
>> Best regards,
>> Mikhail
> I've meant ENDRAW not EEDRAW.

No! ENDRAW concerns energy deposition at a point, due to escape, time kill or
particle below energy threshold. Nothing to do with a shower vertex.

You could use USDRAW and look for an event of bremsstrahlung (if the incident
particle is an electron) or pair production (if it is a photon).
At the primary vertex, the generation number of the secondaries must be equal
to the generation number of the incident particle plus 1. If the shower is
generated by a primary particle, the generation of the secondaries must
be = 2.
The generation number is given by variable LTRACK, in COMMON TRACKR.


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Received on Tue Jun 30 2015 - 16:14:55 CEST

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