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DOI:10.18429/JACoW-HIAT2015-THM2C01
Title Ultra High Impedance Diagnostics of Electrostatic Accelerators with Improved Resolution
Authors
  • N.R. Lobanov, P. Linardakis, D. Tsifakis, T. Tunningley
    Research School of Physics and Engineering, Australian National University, Canberra, Australian Capitol Territory, Australia
Abstract This contribution describes new technique to diagnose faults with high-voltage components in electrostatic accelerators. The main application of this technique is non-invasive testing of high-voltage grading systems; measuring insulation resistance or; determining the volume and surface resistivity of insulation materials used in column posts and acceleration tubes. In addition, it allows verification of the continuity of the resistive divider assembly as a complete circuit. A simple and practical fault finding data interpretation procedure has been established based on simple concepts. As a result of efficient in-situ troubleshooting and fault elimination techniques, the maximum values of |ΔR/R| are kept below 2.5% at the conclusion of maintenance procedures. The 2015 and beyond acceptance margin was reduced further to below 1% by increasing the test voltage from 40 V to 100 V. The experimental verification of improved resolution has been conducted during recent scheduled accelerator maintenance in May-June 2015 when few unique fault categories have been identified by the ultra-high impedance technique.
Paper download THM2C01.PDF [0.789 MB / 3 pages]
Slides download THM2C01_TALK.PDF [9.209 MB]
Conference HIAT2015, Yokohama, Japan
Proceedings Link to full HIAT2015 Proccedings
Session Thursday Morning Contributed Oral 2
Date 10-Sep-15   11:30–12:10
Main Classification Electrostatic Accelerators
Keywords acceleration, high-voltage, impedance, diagnostics, heavy-ion
Publisher JACoW, Geneva, Switzerland
Editors Osamu Kamigaito (RIKEN, Wako, Japan); Schaa, Volker R.W. (GSI, Darmstadt, Germany); Kazunari Yamada (RIKEN, Wako, Japan)
ISBN 978-3-95450-131-1
Published February 2016
Series Heavy Ion Accelerator Technology Conference (13th)
Copyright
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cc Creative Commons Attribution 3.0