Ion-implanted charge collection contacts for high purity silicon detectors operated at 20 mK

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1145599· OSTI ID:6762753

Young, B A ^[1]; Yu, K M ^[2]

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1. Center for Particle Astrophysics and Physics Department, University of California at Berkeley, Berkeley, California 94720 (United States) Physics Department, Santa Clara University, Santa Clara, California 95053 (United States)
2. Lawrence Berkeley Laboratory, University of California at Berkeley, Berkeley, California 94720 (United States)

We have developed a technique for fabricating high resolution, ohmic contacts for cryogenic silicon detectors operated at temperatures well below 1 K. In this paper, we give a detailed description of the techniques used to fabricate these boron-implanted contacts, and present characterization data obtained on 24 test samples studied during the design phase of our program. We then describe the fabrication and operation of a 23 g prototype silicon hybrid detector which simultaneously senses both the phonons and ionization produced by a single event, and which incorporates these new contacts into its design. Finally, we present data obtained using a radioactive source of [sup 241]Am and this detector operated at 20 mK, and conclude that the contacts are fully sufficient for applications in particle astrophysics as well as in many other areas of physics.

• OSTI ID: 6762753
• Journal Information: Review of Scientific Instruments; (United States), Vol. 66:3; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRIC CONTACTS
FABRICATION
NONLUMINOUS MATTER
RADIATION DETECTION
SI SEMICONDUCTOR DETECTORS
AMERICIUM 241
BORON IONS
ION IMPLANTATION
PERFORMANCE TESTING
PHONONS
TEMPERATURE RANGE 0000-0013 K
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM ISOTOPES
CHARGED PARTICLES
DETECTION
ELECTRICAL EQUIPMENT
EQUIPMENT
HEAVY NUCLEI
IONS
ISOTOPES
MATTER
MEASURING INSTRUMENTS
NUCLEI
ODD-EVEN NUCLEI
QUASI PARTICLES
RADIATION DETECTORS
RADIOISOTOPES
SEMICONDUCTOR DETECTORS
SPONTANEOUS FISSION RADIOISOTOPES
TEMPERATURE RANGE
TESTING
YEARS LIVING RADIOISOTOPES
440104* - Radiation Instrumentation- High Energy Physics Instrumentation