Charging of isolated proof masses in satellite experiments such as LISA

Henrique M. Araujo; A. Howard; D. Davidge; Timothy J. Sumner

doi:10.1117/12.461504

26 February 2003 Charging of isolated proof masses in satellite experiments such as LISA

Henrique M. Araujo, A. Howard, D. Davidge, Timothy J. Sumner

Proceedings Volume 4856, Gravitational-Wave Detection; (2003) https://doi.org/10.1117/12.461504
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We report on a Monte Carlo simulation of electrostatic charging of the LISA proof masses by cosmic-ray protons and alpha particles, developed using the Geant4 toolkit. A positive charging rate of 58+/-17 +e/s (proton charges per second) was obtained with the minimum Geant4 energy threshold for the production of secondary particles by electromagnetic processes. This charging rate does not seem to depend strongly on the tracking of low-energy secondary electrons, and is some 5 times larger than that found in previous simulations. The difference is only partly explained by the slightly larger proof mass considered in this study. This figure is used to place new limits on the required discharge time of the LISA test masses.

Citation Download Citation

Henrique M. Araujo, A. Howard, D. Davidge, and Timothy J. Sumner "Charging of isolated proof masses in satellite experiments such as LISA", Proc. SPIE 4856, Gravitational-Wave Detection, (26 February 2003); https://doi.org/10.1117/12.461504

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available