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

Author

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

Author_Institution

Wayne State Univ., Detroit, MI, USA

Volume

46

Issue

3

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

176

Lastpage

180

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 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

elemental semiconductors; silicon radiation detectors; IR LED; Si; cumulative functions; electron cloud profiles; electron cloud width; signal waveforms; silicon drift detectors; two dimensional studies; Anodes; Charge measurement; Clouds; Coordinate measuring machines; Current measurement; Electrons; Infrared detectors; Light emitting diodes; Silicon; Time measurement;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.775510

Filename

775510