Last version:
FLUKA 2021.2.1, July 26th 2021
(last respin )
flair-2.3-0b 30-Jul-2021


-- Fluka Release
( 30.07.2021 )

FLUKA 2021.2.1 has been released.
Fluka Major Release 18.05.2021 FLUKA 2021.2.0 has been released.
Congratulations from INFN: ,
Dear Paola,
I wish to congratulate you and all the authors and collaborators for this new Fluka release, which looks at the future and confirms the support of INFN in the development and continuous improvement of this code.
best regards
Diego Bettoni
INFN Executive Committee

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Calls user dependent initialisation.


The meaning of WHAT(1),...,WHAT(6), SDUM is defined by the user. A call to the user-written routine USRINI with 6 WHAT numerical values and one character string SDUM as arguments is issued every time this card is read

     Default (option USRICALL not given): no user initialisation


  • 1) In subroutine USRINI, WHAT and SDUM must be declared as follows:
              DOUBLE PRECISION WHAT (6)
              CHARACTER SDUM*8
  • 2) A description of routine USRINI and instructions about its use are given in (13)

  • 3) It is suggested that the USRINI routine shall contain at least the three standard INCLUDE files:
                             DBLPRC, DIMPAR, IOUNIT

Other useful files to be INCLUDEd, depending on the problem, can be BEAMCM, CASLIM, SOURCM, SUMCOU, FLKMAT, PAPROP, SCOHLP, USRBDX, USRBIN, USRSNC, USRTRC, USRYLD. See (13) for more information on INCLUDE files useful in user routines.


 USRICALL        123.      456.       1.0      -2.0      18.0      18. FLAG12
 *  Call initialisation routine passing over 6 numerical values and a string

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