Microchannel plate cross-strip detectors with high spatial and temporal resolution
Citation
Siegmund, O., Tremsin, A., Vallerga, J., & McPhate, J. (2009). Microchannel plate cross-strip detectors with high spatial and temporal resolution. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 610(1), 118–122.
Brief
Cross-strip detectors offer high spatial and temporal resolution by employing charge division and centroiding of microchannel plate charge signals detected on two orthogonal layers of sense strips to encode event X–Y positions and times.
Summary
A new type of detector, called a cross-strip (XS) anode detector, is being developed at the University of California, Berkeley. This detector uses a charge division method to achieve high spatial and temporal resolution while operating at a low microchannel plate (MCP) gain, which could potentially lead to longer detector lifetimes. The XS anode detector is made up of a photocathode, a stack of MCPs, and a readout anode. The XS anode itself is a multi-layer pattern of metal and ceramic cross-strips on an alumina substrate.
Here are some of the key features of the XS anode detector:
- High spatial resolution: The detector can achieve a spatial resolution of less than 10 mm.
- High temporal resolution: The detector has a self-triggered event timing accuracy of 750 ps.
- Low MCP gain: The detector can operate at an MCP gain of 106, which is several orders of magnitude lower than other types of detectors.
- High event rate: The detector can encode photons at a rate of more than 1 MHz.
The researchers have developed a prototype of the XS anode detector and tested its performance. The test results show that the detector can achieve the desired spatial and temporal resolution. The researchers are currently working on improving the event rate of the detector. They believe that the XS anode detector has the potential to be used in a variety of applications, including space instrumentation and medical imaging.
Origin: https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC3092716&blobtype=pdf