EGS4 Bug Alert
Pair-Angle Option

Status of Bug

This bug has been corrected in the latest unix
(Jan 2, 1997 version 3) and PC distributions of
of the EGS4 code.

Pair-Angle Option

The version of $SET-PAIR-ANGLE distributed with the egs4unix2.0 and its descendants (hp, ibm/rs6000 and latest VMS versions) always put the positron on the top of the stack with the lower energy of the pair. This was only if the new pair angle routine was invoked by setting the flag IPRDST to 1 or 2.

A new version of $SET-PAIR-ANGLE can be downloaded by anonymous ftp from ehssun1.lbl.gov.

Bug Fame Goes To...

This bug was originally discovered by Jiansu Wei, formally a student at the NRC of Canada who passed away due to illness. More recently, this bug was rediscovered by Klaus Floettmann (DESY).

This bug alert was posted on the EGS listserver (EGS4-L) by Alex F Bielajew on 30-NOV-1995. Further questions regarding the aforementioned bug should be directed to Alex.

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last updated 09/28/01