[fluka-discuss]: Error in Synchrotron radiation generation (SYNCH-RAD)

From: P K <pksfluka_at_gmail.com>
Date: Wed, 2 Jul 2025 09:18:07 +0530

 Dear Fluka experts,
    I was trying to generate synchrotron radiation from electrons using
SPEC-SOUR & SYNCH-RAD, the following error was observed in the output file
(.out)

*Abort called from SYNCHR reason TPOL_PAR != 1 Run stopped! STOP TPOL_PAR
!= 1*

Please guide me to resolve this error problem.

*The details of the source as shown in the end of the .out file are given
below.*
<<< Synchrotron radiation source n. 1 >>>

  Emitting particle: ELECTRON P: 3.00000 GeV/c
    Initial position : 0.0000000 0.0000000 0.0000000 cm
    Initial direction: 0.0000000 0.0000000 1.0000000

  Magnetic field: 2.0000000 0.0000000 0.0000000 T
  Nominal curvature radius: 500.34614 cm
  Nominal arc: 150.00000 cm
  Arc angle: 0.29979246 rad
  Actual curvature radius: 500.34614 cm
  Actual arc: 150.00000 cm
  Transverse p_T: 3.00000 GeV/c and gamma: 5870.85368

  Critical energy: 0.0000119705 GeV

  Photon emission threshold : 1.00000000E-07 GeV
  Photons >1 eV/nominal unit length: 0.11693750 cm^-1
  Photons/unit length 1 eV - thres.: 2.38764540E-02 cm^-1
  Photons/unit length above thres.: 9.30610483E-02 cm^-1

  Total energy/nominal unit length: 4.55537813E-07 GeV/cm
  Energy/unit length below thresh.: 7.54228784E-10 GeV/cm
  Energy/unit length above thresh.: 4.54783584E-07 GeV cm



* Abort called from SYNCHR reason TPOL_PAR != 1 Run stopped! STOP TPOL_PAR
!= 1*


Thank You.

Best Regards
Dr. Prasanta Kumar Sahani
RRCAT, Indore, India


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Received on Wed Jul 02 2025 - 13:32:57 CEST

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