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Fabrication of large area Si cylindrical drift detectors. Revision

Conference ·
OSTI ID:10159520
; ; ;  [1];  [2]
  1. Brookhaven National Lab., Upton, NY (United States)
  2. Maxplanck Inst. of Nuclear Physics, Heidelberg (Germany)
The processing of an advanced silicon detector, a large area cylindrical drift detector (CDD), was carried out in the BNL Instrumentation Division Fabrication Facility. The double-sided planar process technique was developed for the fabrication of the CDD. Important improvements of the double-sided planar process in this fabrication include the introduction of an Al implantation protection mask and implantation of boron through an 1000 angstrom oxide layer in the step of opening the p-window. Another important aspect of the design of the CDD is the structure called ``river,`` which allows the current generated OD the Si-SiO{sub 2} interface to ``flow`` into the guard anode, and thus minimize the leakage, current at the signal anode. The test result showed that for the best detector most of the signal anodes have leakage currents of about 0.3 nA/cm{sup 2}.
Research Organization:
Brookhaven National Lab., Upton, NY (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC02-76CH00016
OSTI ID:
10159520
Report Number(s):
BNL--49016-Rev.; CONF-931107--1; ON: DE94013534
Country of Publication:
United States
Language:
English

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