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Hall-C Radiative Correction Externals Repository
This project forked from jeffersonlab/rc-externals
Hall-C Radiative Correction Externals Repository
externals_2017.f -Program to calculate measured cross sections -Input files --input/cross-sec-data/*: cross section data for fits & interpolations --input/d2model/parms.dat: parameters for d2model --input/externals/externals.inp: list of i/o files which are fed into externals_2017.f --input/grids/*.inp: Input kinematics file listing variables: E0, Ep, theta, W2, Q2 --input/targets/*.targ: Contains target & input parameters for the externals code -Output files: --output/externals/externals.out: Output file from externals code with radiative corrections --output/externals/*.out: Output file from externals code with diagnostics information externals.inp -List of i/o files which are fed into externals_2017.f -The first line is a comment -Dependent files: --eg1b.inp (second line) ---EXTERNAL_RUNPLAN (UNIT=7) ---Input kinematics file listing variables: E0, Ep, theta, W2, Q2 -> make_grid.C prints these ---Code assumes that first six lines of file are comments. This reading is done in subroutine READIN_EXT ---Only E0, Ep, and theta are read in by the externals code, W2 and Q2 are supplemental information for the user --eg1b.targ (third line) ---EXTERNAL_TARGET (UNIT=5) ---Contains input parameters for the externals code ---Has a very specific format read (see subroutine READIN_EXT) so must be careful about format ---First 3 line read into COMMENT array then skips a line ---5th and 6th lines read in IA and IZ with format 15x,i5 then skips a line ----IA and IZ are the atomic number and charge of target. ---8th and 9th lines read in AVGA and AVGM with format 15x,f14.8 then skips a line ----If AVGA and AVGM are zero then calculated in subroutine weiz. For A>4 uses the Weisacker mass formula. ---11th line reads in TARGET with format 20x,A7 then skips a line ----TARGET is used for specific experiments hardwired in the code to set the target radiation lengths in subroutine RADIATORS. If set to "readin" ( or any name that is not hadrcoded in subroutine RADIATORS) , the radiation lengths are set from input ttarg,twall,tbeam,tspec Also the variable SMRDEP is set differently from default for certain experiments. ---13th-16th line reads in ttarg,twall,tbeam,tspec with format 15x,f14.8 ---17th lines reads NSEG with format 15x,i5 then skips 2 lines ----NSEG sets number of segments for the SIMPSON rule integration. Nseg must be EVEN. ---20th line reads IG with format 15x,i5 then skips a line ----IG selects the elastic proton form factor model in subroutine NFORM ( see NFORM for list) IG=15 use Bosted fit. Should be updated with more recent parametrizations. ---22nd line reads IDUT with format 15x,i5 ----IDUT selects the elastic deuteron form factor model in subroutine NUC_FORM_FACTOR ---23nd line reads INEL_MODEL with format 15x,i5 ----INEL_MODEL selects inelastic cross section model in INELAST. INEL_MODEL = 4 selects F1F209 . Best option. Many older models available. ---24th line reads PAULI_MODEL with format 15x,i5 ----PAULI_MODEL sets model in subroutine PAULI_SUPPRESSION. 0 = old stein model; 1 = tsai model; 2 no suppression F1F2QE09 uses Pauli suppression model from Tsai RMP 46,816(74) eq.B54 ---25th line reads NUC_METHOD with format 15x,i5 ----UC_METHOD 0=No cos(theta_k) integration; 1= cos(th_k) integration ---26th line reads NUC_MODEL with format 15x,i5 ----NUC_MODEL not used if INEL_MODEL=4. --output/externals/*.out (fourth line) ---EXTERNAL_OUT (UNIT=10) ---Output file from externals code with diagnostics information. ---Has the table of kinematics and radiatied cross sections. ---Contains the following variables: beam energy, scattered electron energy, scattered electron angle, x, q2, SIGMA_BORN+SIGMA_CORR, sigma_qela(2) + sigma_elpk(2) + sigma_inel(2), sigma_elpk(2), sigma_qela(2), sigma_inel(2), SIGMA_BORN, iesv, iqsv, iwsv, sigma_qela(1) + sigma_elpk(1) + sigma_inel(1), sigma_elastic ---Note: the variables iesv, iqsv, iwsv are filled when doeg1b flag is set to true make_grid.C -Defines the grid for rad-corr, writes an input file (*.inp) containing the variables: E0, E, theta, W2, Q2 based on energy steps in scattered beam energy and angle -The produced input file is read by the externals_2017.f script make_rc_dat.C -Converts the output from extern.out in to the *.dat format that is required for the Monte-Carlo re-weighting code Flow: ./run_externals.sh -> ./make_grid -> ./externals_2017 -> ./make_rc_dat
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