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6CCVD Research

A study of the radiation tolerance of poly-crystalline and single-crystalline CVD diamond to 800 MeV and 24 GeV protons

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-08-01
JournalJournal of Physics D Applied Physics
AuthorsL. BƤni, Andreas V. Alexopoulos, M. Artuso, F. Bachmair, M. Bartosik
InstitutionsUniversity of New Mexico, University of Colorado Boulder
Citations17

Abstract

Section titled ā€œAbstractā€

Abstract We have measured the radiation tolerance of poly-crystalline and single-crystalline diamonds grown by the chemical vapor deposition (CVD) process by measuring the charge collected before and after irradiation in a 50 m pitch strip detector fabricated on each diamond sample. We irradiated one group of sensors with 800 MeV protons, and a second group of sensors with 24 GeV protons, in steps, to protons cm āˆ’2 and protons cm āˆ’2 respectively. We observe the sum of mean drift paths for electrons and holes for both poly-crystalline CVD diamond and single-crystalline CVD diamond decreases with irradiation fluence from its initial value according to a simple damage curve characterized by a damage constant for each irradiation energy and the irradiation fluence. We find for each irradiation energy the damage constant, for poly-crystalline CVD diamond to be the same within statistical errors as the damage constant for single-crystalline CVD diamond. We find the damage constant for diamond irradiated with 24 GeV protons to be and the damage constant for diamond irradiated with 800 MeV protons to be . Moreover, we observe the pulse height decreases with fluence for poly-crystalline CVD material and within statistical errors does not change with fluence for single-crystalline CVD material for both 24 GeV proton irradiation and 800 MeV proton irradiation. Finally, we have measured the uniformity of each sample as a function of fluence and observed that for poly-crystalline CVD diamond the samples become more uniform with fluence while for single-crystalline CVD diamond the uniformity does not change with fluence.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  3. 2017 - High-luminosity Large Hadron Collider (HL-LHC): technical design report
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  7. 2017 - RD42 status report: development of diamond tracking detectors for high-luminosity experiments at the LHC
  8. 2018 - RD42 status report: development of diamond tracking detectors for high-luminosity experiments at the LHC and beyond
  9. 2005 - Charge-carrier properties in synthetic single-crystal diamond measured with the transient-current technique [Crossref]

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