Test and first application of artificial sapphire sensors

Author

Ignatenko, Alexandr ; Baboi, Nicoleta ; Henschel, Hans ; Hensler, Olaf ; Lange, Wolfgang ; Lohmann, Wolfgang ; Schmitz, Michael ; Schuwalow, Sergej ; Wittenburg, Kay

Author_Institution

DESY, Hamburg, Germany

fYear

2010

fDate

Oct. 30 2010-Nov. 6 2010

Firstpage

650

Lastpage

654

Abstract

Samples of monocrystalline sapphire sensors of 10×10 mm² area and 0.5 mm thickness with the initial charge collection efficiency of about 2% have been studied in electron beams. The response as a function of the absorbed dose revealed excellent radiation hardness. The signal size dropped smoothly with the absorbed dose approaching 30% of the signal of non-irradiated sensors after the dose of 12 MGy. Four sapphire sensors have been installed, together with four pCVD diamond sensors, as a beam halo monitor of the FLASH facility. A report on the commissioning and operation experience is given.

Keywords

chemical sensors; chemical vapour deposition; dosimetry; electron beams; radiation hardening (electronics); sapphire; FLASH facility; beam halo monitor; dosimetry; electron beams; monocrystalline sapphire sensors; nonirradiated sensors; pCVD diamond sensors; radiation hardness; Current measurement; Diamond-like carbon; Impurities; Laser beams; Magnetic sensors; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE

Conference_Location

Knoxville, TN

ISSN

1095-7863

Print_ISBN

978-1-4244-9106-3

Type

conf

DOI

10.1109/NSSMIC.2010.5873839

Filename

5873839