asonay / bc501a-unfolding Goto Github PK

This is source code for unfolding method that can be used in ROOT, which is reconstruct neutron spectrum from recoil spectrum. In the same purpose, code can be used to solve back to gamma line from electron recoil spectrum by changing response matrix.

Author: Anil Sonay Date: Dec. 2017

[email protected] / @gmail.com

The source code has prepared for GRAVEL and Doroshenko method which are defined in engine.hh. Response matrix has been created for neutron proton scattering inside the BC501-a liquid scintillator. The bin size of the recoil spectrums has been set for 2 keV, which can be change in the program by users and created for each 20 keV incident neutron.

User defined parameters;

--Initial flux: You can set your initial flux manually, Proper bining is 20 keV. If you don't it will be straight line at one. --Recoil spectrum: This is your main input must be defined. 0 and negative numbers are not acceptable. First column must be energy in MeV unit, second column count and the third column error. Your first energy will taken as threshold. --Bin size: Recoil spectrum bin size must be defined. Response matrix will modified accounted to this. Your bining must be power of two (2^n). --Method: Default model is setting up to 0 for GRAVEL method, any other input will run the Doroshenko.

Example run:

A-) Unfolding

root -l unfold.cpp root -l 'unfold.cpp("./input/AmBe_initial_n.dat","",20,1)' root -l 'unfold.cpp("","./input/AmBe_sim_bin40.dat",40)'

B-) Re-Drawing