CalorimeterFactory.h

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// SPDX-License-Identifier: LGPL-3.0-or-later
// Copyright (C) CERN for the benefit of the SHiP Collaboration
 
#pragma once
 
#include <GeoModelKernel/Units.h>
 
#include <string>
 
class GeoPhysVol;
 
namespace SHiPGeometry {
 
class SHiPMaterials;
struct CalorimeterConfig;
 
class CalorimeterFactory {
   public:
    explicit CalorimeterFactory(SHiPMaterials& materials, std::string configPath = "calo.toml");
    ~CalorimeterFactory() = default;
 
    [[nodiscard]] GeoPhysVol* build();
 
    static double totalStackZ(const CalorimeterConfig& cfg);
 
   private:
    SHiPMaterials& m_materials;
    std::string m_configPath;
 
    void buildStack(GeoPhysVol* container, const CalorimeterConfig& cfg, int moduleX, int moduleY,
                    double offsetX, double offsetY) const;
 
    // ── Fixed container dimensions ──────────────────────────────────────
    // These match the SHiP subsystem envelope from subsystem_envelopes.csv
    // and must not change — tests and the consistency check depend on them.
    static constexpr double s_containerHalfX = 3000.0 * GeoModelKernelUnits::mm;  // 3.00 m
    static constexpr double s_containerHalfY = 3500.0 * GeoModelKernelUnits::mm;  // 3.50 m
    static constexpr double s_containerHalfZ = 1450.0 * GeoModelKernelUnits::mm;  // 1.45 m
};
 
}  // namespace SHiPGeometry