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Title: Electrical breakdown studies with Mycalex insulators

Abstract

Insulating materials such as alumina and glass-bonded mica (Mycalex) are used in accelerator systems for high voltage feedthroughs, structural supports, and barriers between high voltage insulating oil and the vacuum beam pipe in induction accelerator cells. Electric fields in the triple points should be minimized to prevent voltage breakdown. Mechanical stress can compromise seals and result in oil contamination of the insulator surface. We have tested various insulator cleaning procedures including ultrasonic cleaning with a variety of aqueous-based detergents, and manual scrubbing with various detergents. Water sheeting tests were used to determine the initial results of the cleaning methods. Ultimately, voltage breakdown tests will be used to quantify the benefits of these cleaning procedures.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
U.S. DOE. Director, Office of Science. Fusion Energy Sciences (US)
OSTI Identifier:
813394
Report Number(s):
LBNL-53075; HIFAN 1234
R&D Project: Z46010; TRN: US0303905
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: Particle Accelerator Conference PAC 03, Portland, OR (US), 05/12/2003--05/16/2003; Other Information: PBD: 1 May 2003
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 43 PARTICLE ACCELERATORS; ACCELERATORS; BREAKDOWN; CLEANING; CONTAMINATION; DETERGENTS; ELECTRIC FIELDS; ELECTRICAL FAULTS; INDUCTION; INSULATING OILS; MICA; SCRUBBING; TRIPLE POINT; ULTRASONIC WAVES; WATER

Citation Formats

Waldron, W., Greenway, W., Eylon, S., Henestroza, E., and Yu, S. Electrical breakdown studies with Mycalex insulators. United States: N. p., 2003. Web.
Waldron, W., Greenway, W., Eylon, S., Henestroza, E., & Yu, S. Electrical breakdown studies with Mycalex insulators. United States.
Waldron, W., Greenway, W., Eylon, S., Henestroza, E., and Yu, S. Thu . "Electrical breakdown studies with Mycalex insulators". United States. doi:. https://www.osti.gov/servlets/purl/813394.
@article{osti_813394,
title = {Electrical breakdown studies with Mycalex insulators},
author = {Waldron, W. and Greenway, W. and Eylon, S. and Henestroza, E. and Yu, S.},
abstractNote = {Insulating materials such as alumina and glass-bonded mica (Mycalex) are used in accelerator systems for high voltage feedthroughs, structural supports, and barriers between high voltage insulating oil and the vacuum beam pipe in induction accelerator cells. Electric fields in the triple points should be minimized to prevent voltage breakdown. Mechanical stress can compromise seals and result in oil contamination of the insulator surface. We have tested various insulator cleaning procedures including ultrasonic cleaning with a variety of aqueous-based detergents, and manual scrubbing with various detergents. Water sheeting tests were used to determine the initial results of the cleaning methods. Ultimately, voltage breakdown tests will be used to quantify the benefits of these cleaning procedures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 2003},
month = {Thu May 01 00:00:00 EDT 2003}
}

Conference:
Other availability
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