Title :
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
fDate :
4/1/2009 12:00:00 AM
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;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2013853
