From 9f2d116022d6d7b807dfd259bbaad55c60e016ff Mon Sep 17 00:00:00 2001
From: christopher dilks <christopher.j.dilks@gmail.com>
Date: Mon, 16 Aug 2021 14:17:40 -0400
Subject: [PATCH] make snout slope projective w.r.t vessel backplane
---
compact/drich.xml | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/compact/drich.xml b/compact/drich.xml
index 02a21110..a677e2af 100644
--- a/compact/drich.xml
+++ b/compact/drich.xml
@@ -15,12 +15,13 @@
<constant name="DRICH_rmin1" value="19.0*cm"/> <!-- bore radius at dRICh vessel backplane -->
<constant name="DRICH_wall_thickness" value="0.5*cm"/> <!-- thickness of radial walls -->
<constant name="DRICH_window_thickness" value="0.1*cm"/> <!-- thickness of entrance and exit walls -->
- <!-- snout geometry: cone with front radius rmax0 and back radius of rmax1 -->
- <constant name="DRICH_SnoutLength" value="50.0*cm"/>
- <constant name="DRICH_rmax0" value="110.0*cm"/>
- <constant name="DRICH_rmax1" value="125.0*cm"/>
<!-- tank geometry: cylinder, holding the majority of detector components -->
<constant name="DRICH_rmax2" value="200*cm"/> <!-- cylinder radius; 20 cm gap between dRICh and HCalBarrel -->
+ <!-- snout geometry: cone with front radius rmax0 and back radius of rmax1 -->
+ <constant name="DRICH_SnoutLength" value="50.0*cm"/>
+ <constant name="DRICH_SnoutSlope" value="DRICH_rmax2 / (DRICH_zmin + DRICH_Length)"/>
+ <constant name="DRICH_rmax0" value="DRICH_SnoutSlope * DRICH_zmin"/>
+ <constant name="DRICH_rmax1" value="DRICH_SnoutSlope * ( DRICH_zmin + DRICH_SnoutLength)"/>
<!-- additional parameters -->
<constant name="DRICH_aerogel_thickness" value="4.0*cm"/> <!-- aerogel thickness -->
<constant name="DRICH_sensor_size" value="48.0*mm"/> <!-- sensor side length -->
--
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