Title: Scintillation Crystals for HEP Experiments

Speaker: Dr. Liyuan Zhang（Caltech, USA）

Time: 10:00 AM, November 5,

Place: Room C305, IHEP Main Buiding

Moderator: Prof. CHEN Hesheng

Abstract:

Crystal calorimeter has traditionally played an important role in precision measurement of electrons and photons in high energy physics experiments. This talk reports a comparison of common used scintillation crystals, the performance of the CMS PWO crystal calorimeter in situ at LHC and its precision laser monitoring system. An issue of neutron induced nuclear counter effect in Si APDs is also discussed. Progress in our understanding on the application of cerium doped LSO and LYSO crystals in future HEWP experiments, such as the proposed SuperB experiment at Fermi lab and the CMS FCAL upgrade for the HL-LHC, will also be presented.

About the speaker:

2011-present, Caltech, Senior Research Scientist.

2001– 2011, Caltech, Research Scientist.

1998– 2001, Caltech, Postdoctoral Scholar.

1994 - 1998, Université Claude Bernard Lyon I, Lyon, France, Ph.D., Physics

1) construct, commission, maintain and operate a laser based Light Source and high level Distribution Subsystem (LSDS) for monitoring the PbWO crystals in the ECAL of the CMS.

2) R&D on PWO crystals for CMS

3) R&D on large size LSO/LYSO crystals for SuperB and CMS.

4) R&D on LSO/LYSO crystal plate based sampling calorimeter for CMS.

5) R&D on crystal scintillators for the homogeneous hadronic calorimeter (HHCAL) detector concept.