Speaker
Fukun Tang
(Enrico Fermi Institute - University of Chicago)
Description
We have proposed using 2" by 2" micro-channel plates (MCP-PMTs) with a
novel equal-time anode and with capacitive return path coupling to measure
the time-of-flight of relativistic particles, with the goal of being
able to construct large-area TOF detectors with a resolution of 1
psec.
The proposed front-end customer chip is a time stretcher with 1ps resolution,
building with IBM 0.13um SiGe BiCMOS process. the preliminary designs and
simulations for the front-end ASIC chip will be presented in this paper.
Summary
The proposed readout electronics for each MCP-PMT unit
consists of 4 identical front-end ASICs and one DAQ ASIC that
digitizes the front-end outputs, distributes the system clock, and
handles all digital traffic. The front-end ASIC chip is a `time
stretcher', converting the difference in times between start and stop
pulses into a digital pulse with width proportional to the input time
interval but stretched by a factor of 200. We are designing in the IBM
0.13um SiGe BiCMOS 8HP process, The circuitry includes a limiting
amplifier and a constant-fraction discriminator. The DAQ chip then
digitizes the stretched time interval. The preliminary design and
detailed simulations of the front-end ASIC chip will be presented.
Author
Fukun Tang
(Enrico Fermi Institute - University of Chicago)
Co-authors
Gary Drake
(Argonne National Lab)
Harold Sanders
(Enrico Fermi Institute - University of Chicago)
Henry Frisch
(Enrico Fermi Institute - University of Chicago)
Karen Byrum
(Argonne National Lab)
Mary Heintz
(Enrico Fermi Institute - University of Chicago)
