Home » PANDA » PandaRoot » General » charged geantino
| charged geantino [message #11091] |
Wed, 13 October 2010 10:07  |
donghee
Messages: 385
Registered: January 2009
Location: Germnay
|
first-grade participant |
From: *kph.uni-mainz.de
|
|
Dear collegues,
Does anyone know how charged geantino with positive and negative charge can be introduced serarately in the simulation?
The CbmParticle doesn't exist and is replaced with FairParticle.
How can I put this FairParticle into Boxgenerator?
Someone suggests that I can use TParticlePDG via...
| Quote: |
Int_t pdg;
TDatabasePDG *db= TDatabasePDG::Instance();
TParticlePDG *p=0;
p=db->GetParticle("chargedGeant");
if(p) pdg = p->PdgCode();
|
But pdg is always equal to zero 0, and just points to rootino.
and doesn't contain any charge info with this method.
Do you have some experience for usage of charged/neutral geantino in pandaroot and can surely distinguish from rootino with certain method?
Have a nice day!
Best regards,
Donghee
|
|
|
|
|
|
|
|
|
|
| Re: charged geantino [message #13009 is a reply to message #13004] |
Thu, 02 February 2012 11:00  |
StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
|
first-grade participant |
From: *to.infn.it
|
|
This is the answer from Ivana about:
| Quote: |
Hi Stefano,
As Root has only Rootino and no ChargedRootino, both geantino and chargedgeantino are mapped to Rootino.
And Rootino should be mapped to geantino, but I have realized now that it is mapped by mistake to chargedgeantino.
So you can just define kRootino in your application and it will be interpreted as chargedgeantino.
But as this interpretation is not correct, after I will fix it in geant4_vmc, there will be no other way how to define it than to modify the mapping in the geant4_vmc code.
I can ask Root team if we can add ChargedRootino in Root PDG table and then map both particles properly.
Cheers,
Ivana
On 02/02/2012 10:11 AM, Stefano Spataro wrote:
> Dear Ivana,
> I have a short question. Is the charged geantino currently mapped into virtual mc? I mean, if I need to shoot some charged geantino, which PDG code I should use? I have tried to search for this info but I was not able to find it, or maybe I should just take some charged particle and switch off all the interactions?
>
> Many thanks in advance
>
> Ste
|
Hope this helps.
|
|
|
|
|
|
|
|
| Re: charged geantino [message #13015 is a reply to message #13003] |
Thu, 02 February 2012 12:12 |
asanchez
Messages: 350
Registered: March 2006
|
first-grade participant |
From: *kph.uni-mainz.de
|
|
Hi again, Ok now it is called FairParticle at the fairbase/base directory,
the general constructor is
FairParticle( Int_t pdg , const TString name, TMCParticleType mcType, Double_t mass, Double_t charge,
Double_t lifetime, const TString pType="Ion", Double_t width=0, Int_t iSpin=0, Int_t iParity=0,
Int_t iConjugation=0, Int_t iIsospin=0, Int_t iIsospinZ=0, Int_t gParity=0, Int_t lepton=0,
Int_t baryon=0,Bool_t stable=kFALSE);
In your simulation macro (first approach),
you should define your particle (for example in my case it was a double hypernucleus)
FairParticle *B13LL = new FairParticle("B13LL", 5,13, 2,12.45659,5,kFALSE,0.200e-9);
fRun->AddNewParticle(B13LL);
you have to know what is the pdgcode assigned to your particle,
(so that you can generate it afterwards) by doing
Int_t B13LLPDG;
p= db->GetParticle("B13LL");
if(p) B13LLPDG=p->PdgCode();
cout<<B13LLPDG<<endl;
for the physical processes , const TString pType="Ion", you should see that you get something similar to the rootino/geantino family.
instead of "ion".
I hope it works
cheers
Alicia.
|
|
|
|
Goto Forum:
Current Time: Mon Nov 25 12:00:51 CET 2024
Total time taken to generate the page: 0.00725 seconds
|
GSI Forum
Search
Help
Members
Login
Home
