Re: [fluka-discuss]: Beam Momentum and Lab Momentum in Heavy Ion collisions

From: Mikhail Polkovnikov <Михаил Полковников> <pmk_at_ihep.ru>
Date: Thu, 16 Apr 2015 12:04:42 +0300

On 15.04.2015 07:05, Shakeel Ahmed, Dr. wrote:
> Dear FLuka Friends
> I will appreciate if some one refer me to some documents or paper which explains in detail about the lab momentum and momentum of colliding beams. These values are inserted in FLUKA BEAM tag and lab momentum in SPECSOUR card with SDUM=PPSOURCE
>
> thanks
> shakeel
> __________________________________________________________________________
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Dear Shakeel,

Here are some papers about reference lab frame and center mass frame:
http://lpc1.clpccd.cc.ca.us/lpc/physics/pdf/ireffrms.pdf
http://phys.spbu.ru/content/File/Library/studentlectures/schlippe/pp05-03.pdf
http://web.mit.edu/8.01t/www/materials/modules/chapter15.pdf


Example of Ion+Ion colliding beams input file:
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/7472.html

And of course Chapter 15
<http://www.fluka.org/fluka.php?id=man_onl&sub=101> of the user manual.

In general you have to define particle A and particle B.
1. Particle A uses BEAM card in case of hadron where you define the
momentum, and BEAM+HI-PROPE card in case of ion beam, where you define
the momentum per nucleon.

2. Particle B uses SPECSOUR with SDUM = PPSOURCE card where you define
the value of each momentum-vector component of particle A and B, and
type of particle B.

3. Card PHYSICS with SDUM = LIMITS you define the maximum momentum of
these two particles.

4. Link with DPMJET.

Best regards.




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Received on Thu Apr 16 2015 - 12:44:32 CEST