Large Area Picosecond Photodetectors push timing envelope

Aug 06, 2013

The Large Area Picosecond Photodetector (LAPPD) collaboration has developed big detectors that push the timing envelope, measuring the speed of particles with a precision down to trillionths of a second.

As described in the journal Review of Scientific Instruments, which is produced by the AIP Publishing, a team of researchers within the LAPPD collaboration developed an advanced facility for testing large area —with a level of spatial precision measured in micrometers and time resolutions at or below a picosecond.

"Innovation in science often comes from advances in instrumentation," said Matthew Wetstein, a Grainger Fellow at the University of Chicago's Enrico Fermi Institute who was a co-author on the study. "It can come in the form of a completely new capability or be as simple as making existing instrumentation affordable and accessible for many different types of experiments.

In many areas of particle physics, detectors have seen steady improvements in resolution, but timing is an envelope that deserved a push, he added.

"We're designing detectors that are the fastest ever built for their spatial granularity, size, and cost," Wetstein said. "Our goal is to put a very powerful tool into the hands of the scientific community."

A central aspect of the project is a technique known as Atomic Layer Deposition (ALD), the authors reported in their paper. Beyond the realm of high-energy physics, potential applications for the photodetector range from basic X-ray physics to to large-area X-ray detection for homeland security.

Explore further: Halting photons could lead to miniature particle accelerators, improved data transmission

More information: The article, "A Test Facility for Large-Area Microchannel Plate Detector Assemblies Using a Pulsed Sub-picosecond Laser" by Bernhard Adams, Matthieu Chollet, Andrey Elagin, Eric Oberla, Alexander Vostrikov, Matthew Wetstein, Razib Obaid, and Preston Webster is published in the journal Review of Scientific Instruments. dx.doi.org/10.1063/1.4810018

add to favorites email to friend print save as pdf

Related Stories

Gold nanoparticles improve photodetector performance

Jul 26, 2013

The mineral molybdenum disulfide (MoS2), which, when solid, behaves in many ways like grease, has semiconducting properties that make it a promising alternative to silicon or graphene in electronic devices. It also strongly ...

Timing particle flight

Oct 12, 2011

A team of UT Arlington researchers is designing a new, time-of-flight detector that could one day significantly boost measurement capabilities at the Large Hadron Collider, or LHC, in Geneva, Switzerland.

SLAC's X-ray laser explores big data frontier

Jun 14, 2013

(Phys.org) —It's no surprise that the data systems for SLAC's Linac Coherent Light Source X-ray laser have drawn heavily on the expertise of the particle physics community, where collecting and analyzing ...

Recommended for you

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.