Speaker
Prof.
Vladimir Samoylenko
(IHEP-NRC "Kurchatov Institute")
Description
We propose Timing Wall Detector for HF CMS as the part
of CMS Upgrade. The aim of this Detector is the suppression of pileup
background and the improvement of spatial resolution of HF,
which is important for HF performance in LHC high luminosity conditions.
The spatial structure of Timing Wall corresponds to HF one.
The element of Timing Wall consists of two parts,
first part is designed for high precision timing and second
is for spatial measurement with limited accuracy.
The timing part is the quartz trapezoid
bar rotated be the angle of Cherenkov conus. PM MCP is used
as photoreadout. The spatial measurement part is a set of scintillator (LSO/GAGG) pads with
quartz fiber as a lightguide, with multianode PM as a photoreadout.
The time resolution better 30 ps was obtained in Test Runs. Different variants
for scintillator are discussed. Special attention is paid to radiation resistance of the detector.
The same approach can be applied for a detector in high pseuodorapidity region
for diffraction processes study.
Primary author
Prof.
Vladimir Samoylenko
(IHEP-NRC "Kurchatov Institute")
Co-authors
Mr
Dmitry Druzhkin
(CERN)
Mr
Roman Stefanovich
(Belarus State University)
