Radiation Hardness and Linearity Studies of CVD Diamonds

TL;DR

This study demonstrates that CVD diamonds maintain their structural integrity and exhibit highly linear responses under extreme radiation doses and energy depositions, making them promising for high-energy physics detectors.

Contribution

The paper provides new data on the radiation hardness and linearity of CVD diamonds, supporting their use in high-radiation environments like particle calorimeters.

Findings

Diamonds withstand 10 MGy radiation doses without damage.

Diamond response remains linear within 2% up to 250 GeV/cm^3 energy depositions.

Supports use of diamonds in high-energy physics calorimeters.

Abstract

We report on the behavior of CVD diamonds under intense electromagnetic radiation and on the response of the detector to high density of deposited energy. Diamonds have been found to remain unaffected after doses of 10 MGy of MeV-range photons and the diamond response to energy depositions of up to 250 GeV/cm^3 has been found to be linear to better than 2 %. These observations make diamond an attractive detector material for a calorimeter in the very forward region of the detector proposed for TESLA.