In preparation for the CD2 review in mid-2007, the GlueX collaboration has established a baseline conceptual design for each of the detector subsystems. This design is expressed in a collection of documents, one for each subsystem, which include a description of the material and dimensions of each detector component, the readout channel segmentation and channel identifcation scheme, and su±cient information regarding the detector response that a credible physics simulation can be constructed for it. Particular care has been taken to account for detector materials within the detector acceptance, including signal and high voltage cables, gasand cooling distribution systems, and support structures. The purpose of this document is to bring together in one place the parts of those descriptions which are relevant to the GlueX Geant simulation, and provide a reference for the studies that will serve as a basis for the CD2 review.
1. Changed the chamber gas drift velocity to 5.5cm/us, based on input from D. Carmen.
2. Removed the reference to cutout holes in the center of the FDC rohacell planes because these were never implemented in the geometry, and D. Carmen is not in favor of them unless we prove we need them.
3. Suppressed contrasting of recommendations from Detector Review and CD1 Lehman 2005 review reports.
