Title: Active microphonic noise cancellation in radiation detectors

Abstract

A new adaptive filtering technique to reduce microphonic noise in radiation detectors is presented. The technique is based on system identification that actively cancels the microphonic noise. A sensor is used to measures mechanical disturbances that cause vibration on the detector assembly, and the digital adaptive filtering estimates the impact of these disturbances on the microphonic noise. The noise then can be subtracted from the actual detector measurement. In this paper the technique is presented and simulations are used to support this approach.

Inventors:

Zimmermann, Sergio

Issue Date:

2018-11-13

Research Org.:

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1493614

Patent Number(s):

10126443

Application Number:

14/948,043

Assignee:

The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES

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G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

G01T1/244 - {Auxiliary details, e.g. casings, cooling, damping or insulation against damage by, e.g. heat, pressure or the like}
G01T7/005 - {calibration techniques

G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES

G01H17/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups {

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DOE Contract Number:  

AC02-05CH11231

Resource Type:

Patent

Resource Relation:

Patent File Date: 2015 Nov 20

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION