Hera-b 98{206 Software 98{026 Ranger { a Pattern Recognition Algorithm for the Hera-b Main Tracking System Part Iii: Tracking in the Trigger Chambers
A tracking algorithm based on the Concurrent Track Evolution method has been developed to propagate track candidates which have been found in the main tracking system between vertex detector and RICH into the \trigger chamber" area between RICH and electromagnetic calorimeter. The performance of the method is tested on HERA-B Monte Carlo events with full detector simulation and in the framework of the current software environment.
A concurrent track evolution algorithm for pattern recognition in the HERA-B main tracking system
Abstract A strategy for pattern recognition in the main tracking system of a forward B spectrometer like HERA-B or LHC-B is presented. Intrinsically a local method, it combines the virtues of track following procedures with the necessary ability to optimize between many available paths in a high occupancy environment. A hit-locating procedure suitable for a multiplanar detector geometry has been developed. The performance of the method is tested on HERA-B Monte Carlo events with full detector simulation and a realistic spectrometer geometry.
Proposed beam diagnostics instrumentation for the LANSCE refurbishment project
Presently, the Los Alamos National Laboratory is in the process of planning a refurbishment of various subsystems within its Los Alamos Neutron Science Center accelerator facility. A part of this LANSCE facility refurbishment will include some replacement of and improvement to existing older beam-diagnostics instrumentation. While plans are still being discussed, some instrumentation that is under improvement or replacement consideration are beam phase and position measurements within the 805-MHz side-coupled cavity linac, slow wire profile measurements, typically known as wire scanners, and possibly additional installation of fast ionization-chamber loss monitors. This paper will briefly describe the requirements for these beam measurements, what we have done thus far to answer these requirements, and some of the technical issues related to the implementation of the instrumentation.