Difference between revisions of "FDC tilt/alignment update"
From GlueXWiki
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* Kinematic fit of simulate ρ events generated with above FDC tilt | * Kinematic fit of simulate ρ events generated with above FDC tilt | ||
** Reconstruction using nominal geometry (no tilt) | ** Reconstruction using nominal geometry (no tilt) | ||
| − | + | [[File:pim_pulls_tilt_def.png]] | |
| − | [[pim_pulls_tilt_def.png]] | + | |
** Reconstruction using XML for tilted geometry | ** Reconstruction using XML for tilted geometry | ||
| − | [[pim_pulls_tilt_fixed.png]] | + | [[File:pim_pulls_tilt_fixed.png]] |
Revision as of 13:49, 29 July 2021
- Generated π- tracks using particle gun: 1-11 degrees
- Tilted FDC by θx=-0.0275 degrees, θy=0.0265 degrees
- Modified HDGEOMETRY/DGeometry.cc to read gobal position and rotation angles for FDC from XML
- Reconstructed events with nominal geometry (no tilt in XML)(red) and modified geometry with tilt (dark blue)
- Position pulls:
- Momentum pulls:
- Kinematic fit of simulate ρ events generated with above FDC tilt
- Reconstruction using nominal geometry (no tilt)
- Reconstruction using XML for tilted geometry
