Dear Amit,
Were you maybe running only a limited number of primaries which do not permit to get lower bin entries? Because the minimum entry you can have in a bin (per primary) is 1 photon/N/binsize, where N is the number of primaries. The only way to circumvent this is to run more primaries (or use any biasing techniques, but this really depends on your application). Numerically, you should of course be able to get numbers below 1E-6.
Cheers, Anton
PS: Sorry if you receive this Email twice, but the first one I forgot to send also to the mailing list
________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Amit Kumar [amit.live.sal_at_gmail.com]
Sent: 29 November 2013 11:00
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: About USRBDX card
Dear Fluka users
I am using USRBDX card to get number (or fluence per primary) of photons crossing a boundary between two regions. But, I am not getting fluence below E-06 (i.e. 0.000001) as non-Zero, means all values below E-06 is considered to be Zero by USRBDX. Perhaps E-06 is the minimum limit that USRBDX can give as non-Zero.
1. Please clarify my doubt wether E-06 is the minimum limit that USRBDX can calculate as non-Zero.
2. If this is true, then, can we set the minimum limit as low as we want so that I can get photon fluence using USRBDX like E-11 or E-15.
Any kind of assistance will be appreciable.
--
Amit Kumar
Bhaha Atomic Research Centre
Mumbai, INDIA
Phone No. : 022-25592841
Mobile Number: 9969799819
Alt. Email Id. amitkumar_at_barc.gov.in<mailto:amitkumar_at_barc.gov.in>
Received on Fri Nov 29 2013 - 14:18:36 CET