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
88 lines
3.7 KiB
TOML
Executable File
88 lines
3.7 KiB
TOML
Executable File
# p + 4He elastic scattering, dsigma/dOmega(theta_cm), from the alpha recoils of the Run A Ta-foil runs 18-22, straight
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# from a TrackRecon.C production file -- the same route as 27Al_ap_runA.toml. The histogram is
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# elastic_VertexZ_vs_ThetaCM_<variant>_a_<DET>, filled by protonAlphaElastic_core since 2026-10-16.
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# paap_ta_runs.toml is the same measurement from the p-alpha study's per-hit list.
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#
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# (once) process runs 18-22 with CUTLIST=pid_cuts/pid_cutlist.txt and merge them, e.g.
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# bash scratch/paap_hist_2026-10-16/reprocess.sh (or run_tr.sh block 5, then hadd runs 18-22 only)
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# ~/myenv/bin/python -B extract_yields.py examples/paap_ta_runs_hist.toml # or, the same in ROOT:
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# root -l -b -q 'extract_yields.C+("examples/paap_ta_runs_hist.toml")'
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# ~/myenv/bin/python -B geometric_efficiency.py examples/paap_ta_runs_hist.toml
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# ~/myenv/bin/python -B cross_section.py examples/paap_ta_runs_hist.toml
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#
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# Paths are relative to this file's folder.
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title = "p + 4He elastic, alpha recoils, Ta runs 18-22 (TrackRecon histograms)"
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mode = "angular"
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dets = ["qqq", "sx3"]
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out_dir = "../out/paap_ta_run22"
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[det_vars.qqq] # TrackRecon.C spells the detector in upper case in these folders
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DET = "QQQ"
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[det_vars.sx3]
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DET = "SX3"
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# ------------------------------------------------------------- step 1: extract_yields.py / extract_yields.C
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[extract]
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# The merged output of runs 18-22 (not 17: its foil, at z = -135.7 mm, sits inside the vertex window below).
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# Point this at your own merged file to use your own processing.
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source = "hist"
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file = "~/ANASEN_analysis/Output_p/results_run022.root"
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# Folder _a: hits the p/alpha cut (pid_alpha_<det>, CUTLIST) calls alpha. Variant _cath_exgate: cathode topologies
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# (a1c1, a1c2, a2c1, a2c2) and |Ex| < 1 MeV under the alpha hypothesis, i.e. elastic. Others: "" (all topologies,
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# no Ex gate), "_cath", "_exgate".
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hist = "elastic+misc_{DET}_a/elastic_VertexZ_vs_ThetaCM_cath_exgate_a_{DET}"
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axis = "x" # x = vertex z (mm)
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angle_axis = "y" # y = proton theta_cm (deg)
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variable = "z"
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# ------------------------------------------------------------- the reaction (steps 2 and 3)
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[reaction]
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beam_mass_u = 1.007825032 # p
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target_mass_u = 4.002603254 # 4He
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ejectile_mass_u = 1.007825032 # p
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recoil_mass_u = 4.002603254 # 4He
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detect = "recoil" # the silicon sees the alpha; theta_cm is the proton's
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states = [{ ex_mev = 0.0, weight = 1.0 }]
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[beam]
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# As paap_ta_runs.toml: 6.89 MeV protons into the gas; N_b = run 17's Ta-foil Rutherford current (1.35 pA) times
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# the wall time of runs 18-22. The run log's 13 pA would give 2.6378e11 (../../runlog/beam_exposure.py "18-22").
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eloss_table = "../../eloss_calculations/proton_lookup_30MeV_250torr_3pc.dat"
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e_entrance_mev = 6.89
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z_entrance_mm = -454.0
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current_a = 1.35e-12
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time_s = 672.65
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charge_state = 1
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[bins]
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window_z_mm = [-170.0, -53.0] # upstream of every run's foil by 25 mm for runs 18-22, inside the counter
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theta_edges_deg = { start = 88.0, stop = 168.0, step = 8.0 }
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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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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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[acceptance]
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source = "geometric"
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column = "eps_geometric"
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[[reference]]
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csv = "reference/barnard1964_A1113003.csv"
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x_col = "theta_cm_deg"
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y_col = "dsdo_window_mb_sr"
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label = "Barnard 1964, at the window's E_p"
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[plot]
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yscale = "linear"
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xlim = [80, 175]
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ylim = [0, 130]
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