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 //
 // ePIC pfRICH default configuration;
 //
 
 #include "G4SystemOfUnits.hh"
 
 #ifndef _PFRICH_EPIC_DEFAULT_
 #define _PFRICH_EPIC_DEFAULT_
 
 #include <share.h>
 #include <Materials.h>
 
 // -- Primary particle(s) ---------------------------------------------------------------------
 //
 // Optional smearing of primary vertices along the beam line; applies to HEPMC3 input as well;
 // 10cm (proton bunch size) is a reasonable value;
 #define _PRIMARY_VERTEX_SIGMA_               (35*mm)//(10*cm)
 
 //
 // All this can be overriden by '-i' cmd line switch (HEPMC3 input); also see '-s <statistics>' key;
 //
 #define _PRIMARY_PARTICLE_TYPE_              ("pi+")
 // Will toggle between the two types if defined;
 //#define _ALTERNATIVE_PARTICLE_TYPE_        ("kaon+")
 
 #define _PRIMARY_PARTICLE_ETA_           (sign*2.40)
 //#define _PRIMARY_PARTICLE_ETA_            (sign*1.90)
 // If commented out: uniform phi;
 //#define _PRIMARY_PARTICLE_PHI_         (95*degree)
 //#define _PRIMARY_PARTICLE_PHI_         (45*degree)
 
 #define _PRIMARY_PARTICLE_MOMENTUM_        (7.0*GeV)
 // --------------------------------------------------------------------------------------------
 
 // -- General ---------------------------------------------------------------------------------
 //
 // Comment out if want to run without MARCO magnetic field;
 #define _USE_MAGNETIC_FIELD_ "./database/MARCO_v.7.6.2.2.11_1.7T_Magnetic_Field_Map_2024_05_02_rad_coords_(mm)_(T).BMap.txt"
 
 // Import other parts of ePIC geometry;
 //#define _IMPORT_TRACKER_GDML_FILE_ ("./gdml/tracking_only.modified.gdml")
 //#define _IMPORT_BEAMPIPE_GDML_FILE_ ("./gdml/ip6_brycecanyon.modified.gdml")
 
 // Generate GDML output file (for material scans, etc);
 //#define _GENERATE_GDML_OUTPUT_       ("pfRICH.gdml")
 // --------------------------------------------------------------------------------------------
 
 // -- Mirrors ---------------------------------------------------------------------------------
 //
 // At the downstream (sensor plane) location; 
 #define _CONICAL_MIRROR_DS_INNER_RADIUS_  (120.0*mm)
 #define _CONICAL_MIRROR_DS_OUTER_RADIUS_  (569.0*mm)
 // Fixed values matching a CAD model, as of 2024/04/29;
 #define _CONICAL_MIRROR_US_INNER_RADIUS_  ( 66.0*mm)
 #define _CONICAL_MIRROR_US_OUTER_RADIUS_  (623.0*mm)
 
 // Comment out if want to disable the conical mirror optics in IRT;
 #define _USE_CONICAL_MIRROR_OPTICS_           (true)
 // --------------------------------------------------------------------------------------------
 
 // -- Vessel geometry -------------------------------------------------------------------------
 //
 // FIXME: as of Fall 2023, this number is actually 650mm; however, a gap between the outer
 // shell and the outer conical mirror was defined in a bit optimistic fashion; need to 
 // revisit all this before doing the TDR simulations; 
 //#define _VESSEL_OUTER_RADIUS_             (638.0*mm)
 // Let it be 640mm for the time being; 638mm creates a conflict between the outer HRPPD 
 // mirrors and the gas volume; FIXME: why?;
 //#define _VESSEL_OUTER_RADIUS_             (640.0*mm)
 #define _VESSEL_OUTER_RADIUS_             (650.0*mm)
 
 // Given by the project; see e-mail from Alex Eslinger from 2023/08/16;
 #define _FIDUCIAL_VOLUME_LENGTH_          (491.0*mm)
 #define _FIDUCIAL_VOLUME_OFFSET_ (1236.0*mm + _FIDUCIAL_VOLUME_LENGTH_/2)
 
 // Taken from Alex's drawing; 
 #define _FLANGE_EPIPE_DIAMETER_           (105.3*mm)
 #define _FLANGE_HPIPE_DIAMETER_           ( 44.7*mm)
 #define _FLANGE_HPIPE_OFFSET_              (67.6*mm)
 
 // Make the project people happy: vessel will be that far away from the flange
 // during the installation procedure;
 #define _FLANGE_CLEARANCE_                  (5.0*mm)
 
 // FIXME: all these thickness values and material definitions need to be revisited;
 //
 // 0.29" -> 1/4" as of 2024/05/01; 
 #define _VESSEL_FRONT_SIDE_THICKNESS_  (0.25*_INCH_)
 // 2*10mil CF + 1/4" HC + 2*10mil CF;
 #define _VESSEL_INNER_WALL_THICKNESS_  (0.29*_INCH_)
 // 2*10mil CF + 1/2" HC + 2*10mil CF;
 #define _VESSEL_OUTER_WALL_THICKNESS_  (0.54*_INCH_)
 
 // Some moderately optimistic number for aerogel-to-aerogel, aerogel-to-acrylic, 
 // acrylic-to-mirror and such spacing;
 //#define _BUILDING_BLOCK_CLEARANCE_          (1.0*mm)
 // 2024/05/01: this value allows one to get a mirror length of ~402mm in a no-pyramid case,
 // to match Alex's CAD model; we are not fighting for mismatches between CAD and GEANT to
 // anything better than a couple off mm anyway;
 #define _BUILDING_BLOCK_CLEARANCE_          (0.3*mm)
 
 // Because of the beam pipe flange; 
 #define _HRPPD_CENTRAL_ROW_OFFSET_         (40.0*mm)
 
 // Well, a fake material for now;
 //#define _MIRROR_MATERIAL_            (m_QuarterInch_CF_HoneyComb)//m_CarbonFiber)
 // 2*10mil CF + 1/4" HC + 2*10mil CF;
 #define _INNER_MIRROR_THICKNESS_               (1.0)//0.29*_INCH_)
 // 2*10mil CF + 1/2" HC + 2*10mil CF;
 #define _OUTER_MIRROR_THICKNESS_               (2.0)//0.54*_INCH_)
 
 // Gap between tiles at the sensor plane; as of 2023/02/15, assume a "windowed grid" 
 // support plate on the upstream sensor plane end + individual pockets with 
 // ~1mm thick walls for each HRPPD (<10mm high?); insertion from the downstream side;
 //#define _HRPPD_INSTALLATION_GAP_            (1.5*mm)
 // 2024/04/29: ~3mm is the most one can get; keep it like this for the time being;
 #define _HRPPD_INSTALLATION_GAP_            (3.0*mm)
 #define _HRPPD_SUPPORT_GRID_BAR_HEIGHT_     (3.0*mm)
 #define _HRPPD_SUPPORT_GRID_BAR_WIDTH_     (12.0*mm)
 
 // Can also use m_C2F6;
 #define _GAS_RADIATOR_                     m_Nitrogen
 // --------------------------------------------------------------------------------------------
 
 // -- Aerogel ---------------------------------------------------------------------------------
 //
 // Azimuthal segmentation is hardcoded, see DetectorConstruction::Construct();
 //#define _AEROGEL_BAND_COUNT_                     (3)
 #define _AEROGEL_BAND_COUNT_                     (4)
 
 // Inner and outer radial walls are thicker;
 #define _AEROGEL_INNER_WALL_THICKNESS_      (1.0*mm)
 // No need in a thick wall here, since aluminum rings embedded in honeycomb edges will be used;
 #define _AEROGEL_OUTER_WALL_THICKNESS_      (1.0*mm)
 // All other separators are thin; 
 #define _AEROGEL_SEPARATOR_WALL_THICKNESS_  (0.5*mm)
 // Introduced on 2024/04/29;
 #define _AEROGEL_CLEARANCE_GAP_             (0.5*mm)
 
 // Up to two layers along the beam line; 
 //#define _AEROGEL_1_ _AEROGEL_CLAS12_DENSITY_225_MG_CM3_
 #define _AEROGEL_1_ _AEROGEL_BELLE_II_REFRACTIVE_INDEX_1_04_
 //#define _AEROGEL_1_ _AEROGEL_BELLE_II_SMALL_REFRACTIVE_INDEX_
 #define _AEROGEL_THICKNESS_1_               (2.5*cm)
 //#define _AEROGEL_2_ _AEROGEL_CLAS12_DENSITY_155_MG_CM3_
 //#define _AEROGEL_THICKNESS_2_               (2.0*cm)
 
 // Set to m_Nitrogen and something like <100um thickness, for "clean" studies only;
 #define _AEROGEL_SPACER_MATERIAL_       (m_Absorber)
 // --------------------------------------------------------------------------------------------
 
 // -- Acrylic filter --------------------------------------------------------------------------
 //
 // If _ACRYLIC_THICKNESS_ is defined, a single layer right after the aerogel is installed; 
 #define _ACRYLIC_THICKNESS_                 (3.0*mm)
 // --------------------------------------------------------------------------------------------
 
 // -- Mirrors ---------------------------------------------------------------------------------
 //
 // Mirror height and width;
 #define _PYRAMID_MIRROR_HEIGHT_            (30.0*mm)
 #define _PYRAMID_MIRROR_APERTURE_WIDTH_    (_HRPPD_ACTIVE_AREA_SIZE_)
 // --------------------------------------------------------------------------------------------
 
 #endif

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