Two dimensional studies of dynamics of electron clouds in silicon drift detectors

Author

Bellwied, R. ; Beuttenmuller, R. ; Brandon, Nigel ; Caines, H. ; Chen, W. ; DiMassimo, D. ; Dyke, H. ; Hoffmann, G.W. ; Humanic, T.J. ; Kotova, A.I. ; Kotov, I.V. ; Kraner, H.W. ; Li, Zuyi ; Lynn, DeRose ; Minor, B. ; Ott, G. ; Pandey, S.U. ; Pruneau, C.

Author_Institution

Wayne State Univ., Detroit, MI, USA

Volume

1

fYear

1998

fDate

1998

Firstpage

672

Abstract

The dynamics of electrons generated in silicon drift detectors is studied using an IR LED. Electrons were generated at different drift distances. In this way the evolution of the cloud in anode and drift directions as a function of drift time was measured. For the anode direction the method of cumulative functions was used to extract the electron cloud profiles. The cloud width was obtained also from measurements of the charge collected on a single anode as a function of the coordinate of the light spot. We present the first report of the experimental measurements of the cloud width in the drift direction extracted from signal waveforms. The evolution of the electron cloud width with drift time is compared with theoretical calculations. Theoretical expectations agree with our experimental results

Keywords

position sensitive particle detectors; silicon radiation detectors; Si; Si drift detectors; anode direction; cumulative functions; drift directions; drift time; electron clouds; Anodes; Charge measurement; Clouds; Coordinate measuring machines; Current measurement; Electrons; Infrared detectors; Light emitting diodes; Silicon; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE

Conference_Location

Toronto, Ont.

ISSN

1082-3654

Print_ISBN

0-7803-5021-9

Type

conf

DOI

10.1109/NSSMIC.1998.775227

Filename

775227