Polycrystalline CVD Diamonds for the Beam Calorimeter of the ILC

Author

Grah, Christian ; Afanaciev, Konstantin ; Emeliantchik, Igor ; Harder, Ulrich ; Henschel, Hans ; Ignatenko, Alexandr ; Kouznetsova, Ekaterina ; Lange, Wolfgang ; Lohmann, Wolfgang ; Ohlerich, Martin ; Schmidt, Ringo

Author_Institution

FCAL Group, DESY, Zeuthen

Volume

56

Issue

2

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

462

Lastpage

467

Abstract

Polycrystalline artificial diamond produced by chemical vapor deposition (pCVD) is a possible sensor material for the beam calorimeter of the ILC. The requirements are linearity over a large range of flux and radiation hardness against a total ionizing dose of several MGy per year of operation. A hadron test beam at the CERN PS was used to study the linearity of the response of pCVD sensors. An electron test beam at the S-DALINAC was used to measure the charge collection distance (CCD) as a function of the absorbed dose up to several MGy. Current-voltage characteristics of these sensors were measured before and after the irradiation as well as the dependence of the CCD on the applied electric field before and after the irradiation.

Keywords

chemical vapour deposition; diamond; particle calorimetry; radiation effects; time projection chambers; C; CCD; CVD sensors; ILC detector; beam calorimeter; charge collection distance; chemical vapor deposition; current-voltage characteristics; electric field; hadron test beam; irradiation effects; polycrystalline CVD diamonds; radiation hardness; sensor material; time projection chambers; Charge coupled devices; Chemical sensors; Chemical vapor deposition; Current measurement; Electron beams; Ionizing radiation; Ionizing radiation sensors; Linearity; Sensor phenomena and characterization; Testing; BeamCal; CVD diamond sensor; FCAL; ILC; charge collection distance; forward calorimetry; irradiation; pumping; radiation hardness;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2009.2013853

Filename

4812285