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[MCH] fix wire position on station 1 #13983

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Merged
pillot merged 1 commit into from
Feb 20, 2025
Merged

[MCH] fix wire position on station 1 #13983

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1 change: 1 addition & 0 deletions Detectors/MUON/MCH/Simulation/include/MCHSimulation/Response.h
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,7 @@ class Response
float inclandbfield(float thetawire, float betagamma, float bx) const;

private:
Station mStation{}; ///< Station type
MathiesonOriginal mMathieson{}; ///< Mathieson function
float mPitch = 0.f; ///< anode-cathode pitch (cm)
float mChargeSlope = 0.f; ///< charge slope used in E to charge conversion
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8 changes: 4 additions & 4 deletions Detectors/MUON/MCH/Simulation/src/Response.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@
using namespace o2::mch;

//_____________________________________________________________________
Response::Response(Station station)
Response::Response(Station station) : mStation(station)
{
if (station == Station::Type1) {
mMathieson.setPitch(ResponseParam::Instance().pitchSt1);
Expand Down Expand Up @@ -68,9 +68,9 @@ float Response::etocharge(float edepos) const
//_____________________________________________________________________
float Response::getAnod(float x) const
{
int n = int(x / mPitch);
float wire = (x > 0) ? n + 0.5 : n - 0.5;
return wire * mPitch;
return (mStation == Station::Type1)
? std::round(x / mPitch) * mPitch
: (std::floor(x / mPitch) + 0.5f) * mPitch;
}

//_____________________________________________________________________
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