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

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.775510· OSTI ID:679551

Bellwied, R ^[1]; Beuttenmuller, R ^[2]; Brandon, N ^[3]

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1. Wayne State Univ., Detroit, MI (United States)
2. Brookhaven National Lab., Upton, NY (United States)
3. Ohio State Univ., Columbus, OH (United States); and others

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. The authors 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 the experimental results.

• OSTI ID: 679551
• Report Number(s): CONF-981110--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt1 Vol. 46; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CHARGE COLLECTION
DRIFT CHAMBERS
ELECTRON DRIFT
ELECTRONS
SI SEMICONDUCTOR DETECTORS