The Linac Coherent Light Source (LCLS) is a SASE xray Free-Electron Laser (FEL) based on the final kilometer of the Stanford Linear Accelerator. The tight tolerances for positioning the electron beam close to the undulator axis calls for the introduction of Beam Finder Wire (BFW) device. A BFW device close to the upstream end of the undulator segment and a quadrupole close to the down stream en...

Particle identification, in particular the identification of charged pions and kaons, plays an important role for studies CP violation B Factory experiments. For BELLE detector at KEK B-Factory Japan, a threshold aerogel Cherenkov counter (ACC) has been used to separate kaons momentum range between 1.0 GeV/c 3.5 GeV/c. This paper gives brief description ACC design, construction, monitoring syst...

A new method is presented for the analysis of data recorded with a Ring Imaging Cherenkov (RICH) counter. The method, an iterative sorting of hits on the photon detector, is particularly useful for events where rings overlap considerably. The algorithm was tested on simulated data for the HERA-B experiment. ( 1999 Elsevier Science B.V. All rights reserved.

The E864 experiment at BNL requires a beam counter and multiplicity detector system that can perform at an incident beam rate of 10 Au ions per second. We have developed and tested a 150 m thick quartz Cherenkov beam counter and a scintillator based multiplicity-trigger counter during the rst run of this experiment in 1994. We obtained a time resolution of 78 ps for the beam counter at an incid...

We describe here a new concept of a Cherenkov detector for particle identification by means of measuring the Time-of-Propagation (TOP) of Cherenkov photons.