News & Events

HEPL / KIPAC Seminar

Wednesday, January 30, 2013

Andrey Elagin

LAPPD Collaboration
University of Chicago

The Development of Large-Area MCP-based Picosecond Photo-Detectors

Abstract: Microchannel plates (MCPs) allow for micron-level spatial imaging and picosecond-level time resolution, making them a good solution for the next generation of photo-detectors aiming for precision time-of-flight measurements.

The Large-Area Picosecond Photo-Detector Collaboration (LAPPD) is currently developing a 20x20cm, thin, planar, glass-body detector with the MCPs serving as the gain stage. In such a detector photo-electrons ejected from a photo-cathode produce a cascade of secondary electrons in the pores of a pair of MCP's which are consequently collected at the economical RF stripline anode. The anode signal is read out using PSEC4 waveform digitizing ASIC. The modular design allows covering large areas while keeping the number of electronics channels low.

I will report on the recent progress in the development of the detector components. We have built a complete detector system approximating the final detector design. We have measured gain up to 2 x 107, time-of-flight resolution of ~60 ps, differential time resolution of ~6 ps, and spatial resolution of better than 1 mm.

Bio: Not Available

Time: 4:00pm – 5:30pm

Location: Varian Room 355

Light refreshments available 4:00pm; Presentation begiins 4:15pm

Open to All