Speaker
Matthew Wetstein
(University of Chicago)
Description
The Large Area Picosecond Photodetector Collaboration (LAPPD) is developing economical techniques for fabricating large area, glass-body microchannel-plate photomultiplier tubes (MCP-PMTs), scalable for use in a variety of High Energy Physics applications. An important capability of these photosensors is in precision measurements of arrival times and positions of single photons. Prototype LAPPD systems have demonstrated the best combination of time resolution and area coverage of any existing photosensor technology, providing better than 50 picosecond single-photoelectron time resolutions over an 87-88% active area covering 400 cm^2. LAPPDs are also imaging phototubes, able to measure the positions of photon hits with sub-centimeter precision within a single tube. In this talk we will discuss work by the University of Chicago and Argonne National Laboratory characterizing the single photo-electron response of LAPPD detector systems using a sub-picosecond pulsed Ti:Sapphire laser. The analog response of our test LAPPD system is characterized via readout by a digital oscilloscopes or by the 60 channel, 1.5 GHz, 10 Gsample/second front-end system developed by the University of Chicago for the project.
Primary author
Matthew Wetstein
(University of Chicago)
Co-authors
Andrey Elagin
(University of Chicago)
Bernhard Adams
(Argonne National Laboratory)
Obaid Razib
(Illinois Institute of Technology)
Richard Northop
(University of Chicago)
Robert Wagner
(Argonne National Laboratory)
eric oberla
(uchicago)
henry frisch
(u)
