UPHUK-3, 17-19 September 2007, Bodrum Turkey -1- Ercan Pilicer, Ilhan Tapan, Nilgun Demir Uludag Univesity Physics Department Bursa-Turkey A RADIATION.

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Presentation transcript:

UPHUK-3, September 2007, Bodrum Turkey -1- Ercan Pilicer, Ilhan Tapan, Nilgun Demir Uludag Univesity Physics Department Bursa-Turkey A RADIATION SHIELDING SIMULATION FOR BESSY FEL e- DUMP SYSTEM

UPHUK-3, September 2007, Bodrum Turkey -2-  BESSY FEL  e- dump system  Radiation environment  F LUKA (A Multi-particle Transport Code)  e- dump simulation  Future works  Remarks & Conclusions Contents UYEF

UPHUK-3, September 2007, Bodrum Turkey -3- BESSY FEL Synchrotron ring BESSY FEL UYEF 1.7 GeV e- energy, 240 m circumference

UPHUK-3, September 2007, Bodrum Turkey -4- BESSY FEL Electron and photon energies UYEF

UPHUK-3, September 2007, Bodrum Turkey -5- e- dump system BESSY FEL e- dump layout UYEF

UPHUK-3, September 2007, Bodrum Turkey -6- Radiation environment Different products resulting from electron-nucleus interactions; Gamma rays by high energy electron hitting on vacuum system component or colliding with the residual gas nuclei Neutrons by photons from bremsstrahlung or from EM cascade in nucleus interaction Protons by nuclear interactions, but small in range when compared to neutrons Muons by pair production from photons having a starting energy of 212 MeV UYEF

UPHUK-3, September 2007, Bodrum Turkey -7- F LUKA (A Multi-particle Transport Code) F LUKA is a general purpose tool for calculations of particle transport and interactions with matter, covering an extended range of applications; Proton and electron accelerator shielding, target design, calorimetry, activation, dosimetry, detector design, Accelerator Driven Systems, cosmic rays, neutrino physics, radiotherapy etc. In general no programming is required except in the case of special user requirements via user routines written in Fortran77 UYEF Free to download from

UPHUK-3, September 2007, Bodrum Turkey -8- e- dump simulation Construct geometry in 3 ways; SimpleGEO (3D viewer) ALIFE (2D viewer) FlukaGUI (2D viewer) UYEF

UPHUK-3, September 2007, Bodrum Turkey -9- e- dump simulation Some physical processes included; By default (SHIELDIN) but can be overwritten EM interactions (EMF) Photo-nuclear interactions (PHOTONUC) Particle threshold (PART-THR) Low energy neutrons (LOW-NEUT) Output and scoring by; SCORE (ALL-PART, PHOTON, ENERGY, EM-ENRGY) USERWEIG (conversion factors) USRBIN (fluence & energy deposition) USERDUMP (define a collision tape) USRICALL (user dependent initialisation) UYEF

UPHUK-3, September 2007, Bodrum Turkey -10- e- dump simulation Gamma dose rate in Sv/h for 40 MeV 2 mA UYEF

UPHUK-3, September 2007, Bodrum Turkey -11- e- dump simulation Neutron dose rate in Sv/h for 40 MeV 2 mA UYEF

UPHUK-3, September 2007, Bodrum Turkey -12- e- dump simulation UYEF By modifying some user routines, coordinates for boundary crossing particles in the barrel body gammasneutrons

UPHUK-3, September 2007, Bodrum Turkey -13- e- dump simulation Ekin for leaking particles from barrel body UYEF gammasneutrons

UPHUK-3, September 2007, Bodrum Turkey -14- e- dump simulation UYEF

UPHUK-3, September 2007, Bodrum Turkey -15- e- dump simulation UYEF

UPHUK-3, September 2007, Bodrum Turkey -16- e- dump simulation UYEF

UPHUK-3, September 2007, Bodrum Turkey -17- e- dump simulation UYEF

UPHUK-3, September 2007, Bodrum Turkey -18- e- dump simulation UYEF

UPHUK-3, September 2007, Bodrum Turkey -19- Future works More realistic geometry & Any shielding & G4 comparision UYEF

UPHUK-3, September 2007, Bodrum Turkey -20- Remarks & Conclusions  e- should be stopped  First steps to understand radiation safety issues  BESSY FEL e- dump system adopted to TAC IR FEL  Simulation work for gammas & neutrons doses, fluences, Ekin  Thank to Dr. Klaus Ott BESSY) for his contribution UYEF

UPHUK-3, September 2007, Bodrum Turkey -21- Thank you for your attention... News from simulation technologies...