Surface charge control of the Advanced LIGO mirrors using externally introduced ions

Document #:

LIGO-T1100332-v1

Document type:

T - Technical notes

Abstract:

The surface charge on the LIGO mirrors can be neutralized by introducing positive and negative ions in a clean carrier gas. The note describes a system developed to neutralize surface charge densities as large as 10^-10 coulombs/cm^2 on the mirrors in the BSC chambers.

Files in Document:

• ion_generator_for_LIGO.pdf (1.7 MB)

Other Files:

• charge control ionizer cost estimate for T1100332.xlsx (15.6 kB)

Topics:

• Operations
• Commissioning
• Suspensions

Authors:

• Rainer Weiss

Keywords:

mirror charging ion neutralization

Related Documents:

• LIGO-G1401179: Estimate of force coupling between charged optic face and optic cage

Referenced by:

• LIGO-T1400713-v3: Test Mass Discharge System (TMDS): Design Document