Speaker
Mr
Matthew Andrew
(University of Hawaii)
Description
Extremely fast timing from Micro-Channel Plate PhotoMultiplier Tubes
(MCP-PMTs) and multi-gigasample per second (GSa/s) waveform sampling
ASICs will allow precision timing to play a pivotal role in the
next-generation of Ring Imaging Cherenkov (RICH) detectors. We have
developed a second prototype of the electronics to instrument the Time
of Propagation (TOP) counter for the Belle II detector at KEK in
Tsukuba, Japan. The front-end electronics modules consist of an array
of waveform sampling / digitizing ASICs controlled by FPGAs with
embedded microprocessor cores. The ASICs digitize amplified signals
from an array of multi-anode MCP-PMTs coupled to a quartz radiator bar.
Unwanted artifacts in the data are corrected with digital signal
processing and feature-extraction on the front-end. Readout and control
are done via multi-gigabit per second fiber optic links to a custom
back-end.
A previous generation of these modules has been running in a prototype
Focusing Detection of Internally Reflected Cherenkov (fDIRC) counter
mounted in a Cosmic-Ray Stand (CRT) at SLAC continuously for over 12
months. The most recent version was taken to a beam test at
SPring-8/LEPS in Japan in mid-2013. These experiences have influenced
the design of the next set of ASICs and PCBs for the front-end, and we
will present details on the latest generation.
Summary
We will present details on the latest generation of the front-end electronics (amplifiers, ASIC, FPGA/SoC, PCBs) in the TOP counter for the Belle II upgrade at KEK in Tsukuba, Japan.
Primary author
Mr
Matthew Andrew
(University of Hawaii)
Co-authors
Dr
Brian Kirby
(University of Hawaii at Manoa)
Dr
Gary Varner
(University of Hawaii)
Mr
James Bynes
(University of Hawaii)
Dr
Kurtis Nishimura
(SLAC)
