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Publication Information
Title TiN coated aluminum electrodes for DC high voltage electron guns
Abstract Preparing electrodes made of metals like stainless steel, for use inside DC high voltage electron guns, is a labor-intensive and time-consuming process. In this paper, the authors report the exceptional high voltage performance of aluminum electrodes coated with hard titanium nitride (TiN). The aluminum electrodes were comparatively easy to manufacture and required only hours of mechanical polishing using silicon carbide paper, prior to coating with TiN by a commercial vendor. The high voltage performance of three TiN-coated aluminum electrodes, before and after gas conditioning with helium, was compared to that of bare aluminum electrodes, and electrodes manufactured from titanium alloy (Ti-6Al-4V). Following gas conditioning, each TiN-coated aluminum electrode reached ?225?kV bias voltage while generating less than 100?pA of field emission (<10?pA) using a 40?mm cathode/anode gap, corresponding to field strength of 13.7?MV/m. Smaller gaps were studied to evaluate electrode performanc
Author(s) Md Abdullah Mamun, Abdelmageed Elmustafa, Rhys Taus, Eric Forman, Matthew Poelker
Publication Date April 2015
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Accelerator Ops, R&D / Ctr For Injectors&Sources / Ctr for Injectors&Sources
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-ACC-15-2090 OSTI Number: 1190823
LANL Number: Other Number: DOE/OR/23177-3439
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Journal of Vacuum Science & Technology A
Refereed Yes
Volume 33
Issue 3
Page(s) 031604
Attachments/Datasets/DOI Link
Document(s)
JLAB-ACC-15-2090.pdf (STI Document)
DOI Link
Dataset(s) (none)
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