From 9611fba1ae73146a0d37fdc341a3bb12f49ddc87 Mon Sep 17 00:00:00 2001
From: Patrick Scholer <patick.scholer@cern.ch>
Date: Wed, 18 Mar 2020 20:52:02 +0100
Subject: [PATCH] fixing channel dist for stereo layers
---
.../MuonReadoutGeometry/MuonChannelDesign.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/MuonSpectrometer/MuonDetDescr/MuonReadoutGeometry/MuonReadoutGeometry/MuonChannelDesign.h b/MuonSpectrometer/MuonDetDescr/MuonReadoutGeometry/MuonReadoutGeometry/MuonChannelDesign.h
index ced3aaf9e2d9..70757a64ad9e 100644
--- a/MuonSpectrometer/MuonDetDescr/MuonReadoutGeometry/MuonReadoutGeometry/MuonChannelDesign.h
+++ b/MuonSpectrometer/MuonDetDescr/MuonReadoutGeometry/MuonReadoutGeometry/MuonChannelDesign.h
@@ -140,7 +140,11 @@ namespace MuonGM {
// As such,our calculations are in 1D and do not require the use of the angle
// We are commenting out instead of removing while we come to a permanent solution
// Alexandre Laurier September 12 2018
- Amg::Vector2D chLoc( pos.x()-chPos.x() , pos.y()-chPos.y());
+
+ //In the new geometry from November 2019 the layers are not anymore tilted, therefore we need
+ //to introduce the correction for the stereo angle in the distance
+ //Patrick Scholer March 18 2020
+ Amg::Vector2D chLoc( (pos.x()-pos.y()*tan(sAngle))-chPos.x() , pos.y()-chPos.y());
if ( validMode && fabs(chLoc.x()) > 0.5*channelWidth( pos) ) {
MsgStream log(Athena::getMessageSvc(),"MuonChannelDesign");
if (log.level()<=MSG::INFO) log << MSG::INFO << "Problem in identification of the channel: distance to nearest channel, channel width: "
--
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