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Related Experiment Videos

Active-edge planar radiation sensors.

C J Kenney1, J D Segal, E Westbrook

  • 1Molecular Biology Consortium, 2201 Campbell Park Drive, Chicago, IL 60612 USA.

Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
|January 11, 2008
PubMed
Summary
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New silicon radiation sensors minimize dead area using plasma etching for improved edge activity. This advancement is crucial for applications in medicine, physics, and astrophysics requiring precise detection.

Area of Science:

  • Physics
  • Materials Science
  • Sensor Technology

Background:

  • Large area radiation sensors are vital in medicine, biology, high-energy physics, and astrophysics.
  • Minimizing dead area in these sensors is a critical challenge for optimal performance.

Purpose of the Study:

  • To develop a novel silicon radiation sensor with minimal dead area at its edges.
  • To present the architecture and synchrotron beam test results of this new sensor design.

Main Methods:

  • Device perimeters fabricated using plasma etching instead of traditional diamond sawing.
  • Passivation of sensor edges achieved by growing a field oxide on side surfaces.
  • Characterization using synchrotron radiation beam tests.

Main Results:

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  • The developed silicon radiation sensor is active to within microns of its mechanical edge.
  • Plasma etching enables precise edge definition and passivation.
  • Synchrotron beam tests confirm the sensor's performance characteristics.

Conclusions:

  • The novel plasma-etched silicon radiation sensors significantly reduce dead area.
  • This technology offers enhanced performance for large area radiation detection systems.
  • The approach is applicable to various scientific and medical fields requiring sensitive radiation monitoring.