International Journal of Terahertz Science and Technology
  TST >> Vol.9, No.4, December 2016: PP. 117-186
 

(Invited paper) Development of high-frequency cw gyrotrons for DNP/NMR applications

Monica Blank 1*, Philipp Borchard 1, Stephen Cauffman 1, Kevin Felch 1, Melanie Rosay 2 , and Leo Tometich 2
1 Communications and Power Industries, 811 Hansen Way, Palo Alto, CA 94304, USA
2 Bruker-Biospin, 15 Fortune Drive, Billerica, MA 01730, USA
*1 Email: monica.blank@cpii.com

View Full Text: PDF

Abstract: Dynamic nuclear polarization (DNP) enhanced nuclear magnetic resonance (NMR) spectroscopy is an emerging and growing application for high-frequency, continuous-wave (cw) gyrotrons. For DNP, gyrotrons capable of producing tens to hundreds of watts at millimeter-wave and terahertz frequencies are required. As an original equipment manufacturer of gyrotrons for Bruker Biospin DNP/NMR spectrometers, CPI has developed cw gyrotrons at 263GHz, 395GHz, and 527GHz, all of which are capable of producing at least 50 W output power. The gyrotrons at all three frequencies operate at the second harmonic of the cyclotron frequency and produce high-quality Gaussian output beams suitable for transmission in corrugated waveguides. To date, 30 Bruker DNP/NMR systems using CPI gyrotrons have been installed around the world. Key features of the gyrotrons, as well as the results of experimental demonstrations, are presented.

Keywords: gyrotron, millimeter wave, terahertz, DNP, NMR spectroscopy

Received: 2016-12-22

Published: 2016-12-31

Cite this article:
Monica Blank, Philipp Borchard, Stephen Cauffman, Kevin Felch, Melanie Rosay, and Leo Tometich (Invited paper) Development of high-frequency cw gyrotrons for DNP/NMR applications[J]. International Journal of Terahertz Science and Technology, 2016, Vol.9, No.4: 177-186.  10.11906/TST.177-186.2016.12.17

URL: http://www.tstnetwork.org/10.11906/TST.177-186.2016.12.17

 

 
 

Print | close

Copyright© 2008 Scinco Inc. All Rights Reserved
P.O.Box 6982, Williamsburg, VA 23188, USA var cnzz_protocol = (("https:" == document.location.protocol) ? "https://" : "http://");document.write(unescape("%3Cspan id='cnzz_stat_icon_2409046'%3E%3C/span%3E%3Cscript src='" + cnzz_protocol + "s4.cnzz.com/stat.php%3Fid%3D2409046%26show%3Dpic' type='text/javascript'%3E%3C/script%3E"));