Vignesh Sitaraman
d63a422a41
new folder: cross_section, this folder allows for cross section calculations for the ANASEN data, a readme and some example files are provided modified: run_tr.sh
89 lines
3.8 KiB
TOML
Executable File
89 lines
3.8 KiB
TOML
Executable File
# 27Al(a,p)30Si excitation function, Run A, QQQ3 and SX3. Same inputs as ../../scratch/xs_27Al_lowE_2026-10-15.
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#
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# ~/myenv/bin/python -B extract_yields.py examples/27Al_ap_runA.toml # 1. ROOT -> out/27Al_ap_runA/yields_<det>.csv
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# ~/myenv/bin/python -B geometric_efficiency.py examples/27Al_ap_runA.toml # 2. detectors.py -> eps_<det>.csv
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# ~/myenv/bin/python -B cross_section.py examples/27Al_ap_runA.toml # 3. -> xs_<det>.csv, xs.png
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#
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# Each script reads the sections it needs. Paths are relative to this file's folder.
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# "{det}" is replaced by each entry of `dets`.
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title = "27Al(a,p)30Si, Run A"
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mode = "excitation" # "excitation": sigma(E_cm); "angular": dsigma/dOmega(theta_cm)
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dets = ["sx3", "qqq"] # names known to detectors.py
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out_dir = "../out/27Al_ap"
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# ------------------------------------------------------------- step 1: extract_yields.py
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[extract]
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# One fill per candidate: x = vertex z, y = tracked beam energy. Projected on y (all z, including overflow).
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source = "hist"
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file = "~/ANASEN_analysis/Output_27Al_X0_Y0/Output_27Al.root"
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hist = "_m27Alax+misc_{det}/m27Alax_BeamEnergy_vs_VertexZ_{det}"
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axis = "y"
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variable = "e_beam"
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# ------------------------------------------------------------- the reaction (steps 2 and 3)
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[reaction]
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beam_mass_u = 26.981538 # 27Al (atomic masses, as TrackRecon.C)
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target_mass_u = 4.002603254 # 4He
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ejectile_mass_u = 1.007825032 # p -> Q = 2.372 MeV for the ground state
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recoil_mass_u = 29.973770 # 30Si
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detect = "ejectile"
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ecm_per_ebeam = 0.12918 # the rounded factor of the established analysis (the masses give 0.129182)
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# 30Si states weighted by the TALYS (a,p) state cross sections at each bin's E_cm
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states_csv = "../inputs/talys_27Al_ap.csv"
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# or fixed weights: states = [{ex_mev = 0.0, weight = 1.0}, {ex_mev = 2.235, weight = 0.5}]
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[beam]
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# Beam energy along z;
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# the nominal E_cm of each bin and the beam energy in the efficiency toy come from the 0.962 track.
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track_csv = "../inputs/beam_tracks.csv"
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track_z_col = "z_mm"
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track_e_col = "e_beam_mev_0962"
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# Alternative: build the track from an energy-loss table (check which dE/dx scale the table was made with):
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# eloss_table = "../../eloss_calculations/aluminum_lookup_80MeV_250torr_3pc.dat"
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# e_entrance_mev = 56.16
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# z_entrance_mm = -454.0
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n_beam = 1.4405e12 # Faraday cup, ch5 ssec:beam_exposure: the 45 runs (2.2096e12)
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# For another set of runs: ../../runlog/beam_exposure.py "<runs>" --data-dir ../../Output_27Al_fb
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n_beam_rel_err = 0.5
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[bins]
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ecm_edges = { start = 0.0, stop = 7.25, step = 0.25 }
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# ------------------------------------------------------------- step 2: geometric_efficiency.py
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[efficiency]
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n_per_bin = 400000
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seed = 20261016
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# ------------------------------------------------------------- step 3: cross_section.py
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[target]
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# 4He in 250 Torr He + 3% CO2 at 20 C -> 7.988e17 He atoms per cm2 per mm
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pressure_torr = 250.0
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temperature_k = 293.15
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mole_fraction = 0.97
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atoms_per_molecule = 1
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# [yield] csv = "..." # only to read yields from somewhere other than <out_dir>/yields_<det>.csv
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[acceptance]
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source = "geometric" # <out_dir>/eps_<det>.csv from step 2
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column = "eps_geometric" # or eps_si, eps_si_thr, eps_counter
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# To use the adopted efficiency of ../../scratch/xs_27Al_lowE_2026-10-15 instead (includes gas loss and thresholds):
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# source = "csv"
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# csv = "../../scratch/xs_27Al_lowE_2026-10-15/out/xs_{det}.csv"
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# match = "bin"
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# x_col = "ecm_lo_mev"
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# eps_col = "eps_tube_adopted"
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# rel_err_col = "eps_tube_rel_err"
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[[reference]]
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csv = "../inputs/talys_27Al_ap.csv"
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x_col = "ecm_mev"
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y_col = "sigma_total_mb"
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label = "TALYS (a,p), discrete states"
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[plot]
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yscale = "log"
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xlim = [0, 7.4]
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ylim = [1e-3, 3e4]
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