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Re: Question about update version for mar14 [message #16230 is a reply to message #16226] Fri, 04 April 2014 13:45 Go to previous message
Klaus Götzen is currently offline  Klaus Götzen
Messages: 293
Registered: June 2006
Location: GSI
first-grade participant
From: *gsi.de
Hi,


there is another issue which I'd like to mention: At the moment, the default behaviour of DPM Gen is to hand particles like pi0, K_S, Lambda, etc, over to Geant without decaying them. Therefore these events are not suitable for the fast simulation studies where no transport software is used.

Aida is currently working to implement a possibility to control this by parameters. Therefore you either have to patch DPMGen in your own pandaroot (pgenerators/DpmEvtGen/init.f, lines 140ff)

136	C-----------------------------------------------------------------
137	C    IF IT IS NEEDED TO POINT OUT THE OTHER STABLE
138	C    PARTICLES, PUT CORRESPONDING ISTAB = 1
139	C-----------------------------------------------------------------
140	       IDSTAB(17)=1  ! \Lambda
141	       IDSTAB(18)=1  ! Anti_Lambda
142	       IDSTAB(19)=1  ! K^0_s
143	       IDSTAB(23)=1  ! \pi^0
144	C      IDSTAB(33)=1  ! \rho_0
145	ccc aida
146	c       IDSTAB(31)=1  ! eta
147	c       IDSTAB(35)=1  ! omega
148	c        IDSTAB(95)=1  !eta'


by setting the IDSTAB parameters to 0 and recompiling, or you wait for the official update from Aida.


Best,
Klaus
 
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