Measurements and FLUKA Simulations of Bismuth and Aluminum
Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF Elpida Iliopoulou 4 th FLUKA Advanced course, 12/05/2016
Outline � CHARM (CERN High energy Accele. Rator Mixed field facility) � CSBF (CERN Shielding Benchmark Facility) � Activation benchmark campaign in July 2015 � FLUKA simulations � FLUKA sensitivity studies � Results � Upgrade of CSBF 2 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CHARM - Location 3 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CHARM - Layout lin m a e B Target alcove e Target Movable shielding walls 4 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CHARM � Purpose Ø Study radiation effects on electronic components (R 2 E project) � Beam characteristics Ø Ø Ø Primary protons from the PS 24 Ge. V/c momentum 5 x 1011 protons/pulse 350 ms pulse length max. average beam intensity 6. 6 x 1010 p/s 5 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CHARM 4 movable shielding walls 6 Target holder Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CSBF (CERN Shielding Benchmark Facility) � Combined facility EN/EA R 2 E and RP � Purpose Ø Ø Characterization of the shielding properties of various materials Deep shielding penetration studies u Detector calibration u Detector inter-comparison u Activation � Situated laterally above the CHARM target Ø Parasitic use of the radiation field emerging from the CHARM target � 80 cm cast iron & 360 cm of concrete and barite concrete 7 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CSBF – Layout 2015 8 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
CSBF - Location 9 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Activation benchmark campaign in July 2015 � Bismuth & aluminum samples Ø Ø Ø 11 disk samples Different heights in the CSBF Inside CHARM � Copper target � Specific production yield comparison Ø Ø FLUKA simulations Measured activity 10 Production yield Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
FLUKA simulations � Protons with 24 Ge. V/c on Cu target � Region importance biasing � Usrtrack – scoring for neutron fluence Ø Weighting with a set of cross sections of Bi(n, xn) and Al(n, a)Na 24 � Correct geometry description Ø Scoring volumes � Correct material description 11 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
FLUKA simulations 12 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
FLUKA simulations 13 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
FLUKA sensitivity studies � Beam profile on target (FWHM) Ø Ø From 12 mm x 12 mm Negligible impact 36 mm x 36 mm � Materials upstream inside IRRAD Ø 20% difference � Density of materials Ø Ø Concrete, from 2. 2 g/cm 3 Cast Iron, from 7. 3 g/cm 3 14 2. 4 g/cm 3 7. 2 g/cm 3 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Results 15 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Results 16 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Results 17 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Results 18 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Results-Preliminary results 19 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Upgrade of CSBF � Requirements: Ø Passive detectors u Activation samples or passive dosimeters u Monte Carlo benchmark studies Ø Active detectors u On top of the shielding u Deep penetration neutron spectrum Ø Dosimeters attached to phantoms u On top of the shielding u Deep penetration neutron spectrum Ø Shielding material test location u Measurement of the attenuation length for different materials � Detailed design based on FLUKA simulations 20 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Upgrade of CSBF –Layout 21 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Upgrade of CSBF 22 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF 12/05/2016
Thank you for your attention! 23 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF– EDMS 12/05/2016
BACKUP 24 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF– EDMS 12/05/2016
Backup - Upgrade 25 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF– EDMS 12/05/2016
Backup - Upgrade 26 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF– EDMS 12/05/2016
Backup - Upgrade 27 Measurements and FLUKA Simulations of Bismuth and Aluminum Activation at the CSBF– EDMS 12/05/2016
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