Design of a 394.6 GHz compact gyrotron FU CW CI for 600 MHz DNP-NMR spectroscopy

2016

Correspondence should be addressed to idehara@fir.u-fukui.ac.jpIn this paper, we present the recent progress in the development of a series of gyrotrons at FIR UF that have opened the road to many novel applications in the high-power Terahertz science and technology. The current status of the research in this actively developing field is illustrated by the most representative examples in which the developed gyrotrons are used as powerful and frequency tunable sources of coherent radiation operating in a CW regime. Among them are high-precision spectroscopic techniques (most notably DNP-NMR, ESR, XDMR, and studies of the hyperfine splitting of the energy levels of positronium), treatment and characterization of advanced materials, new medical technologies.

Section: Gyrotrons Of the Fu Cw Seriesmentioning

confidence: 99%

Gyrotrons for High-Power Terahertz Science and Technology at FIR UF

2016

“…The mentioned special design envisages also development of an optimized low-voltage and low-current MIG with reduced (minimized) radial dimensions. This concept has been realized recently in one of the newest gyrotrons, namely FU CW CI [43], which has been built using an 8 T magnet (see Fig. 13).…”

Section: Recently Developed Gyrotrons Members Of the Fu Cw C And Fu mentioning

confidence: 99%

Development and Applications of High—Frequency Gyrotrons in FIR FU Covering the sub-THz to THz Range

2012

Powerful sources of coherent radiation in the sub-terahertz and in the terahertz frequency range of the electromagnetic spectrum are necessary for a great and continuously expanding number of applications in the physical research and in various advanced technological processes as well as in radars, communication systems, for remote sensing and inspection etc.. In recent years, a spectacular progress in the development of various gyrodevices and in particular of the powerful high frequency (sub-terahertz and terahertz) gyrotron oscillators has demonstrated a remarkable potential for bridging the so-called terahertz power gap and stimulated many novel and prospective applications. In this review paper we outline two series of such devices, namely the Gyrotron FU Series which includes pulsed gyrotrons and Gyrotron FU CW Series which consist of tubes operated in a CW (continuous wave) or long pulse mode, both developed at the FIR FU Center. We present the most remarkable achievements of these devices and illustrate their applications by some characteristic examples. An outlook for the further extension of the Gyrotron FU CW Series is also provided.

“…The first prototype of such a tube has already been constructed at FIR FU. This gyrotron (FU CW CI) is one of newest members of the FU CW series and was conceived initially as a compact radiation source for DNP/NMR spectroscopy [26,47]. Its operational characteristics are appropriate also for the planed dual-beam irradiation.…”

Section: Specification Of the Novel Gyrotron And The First Prototypementioning

confidence: 99%

A Dual-Beam Irradiation Facility for a Novel Hybrid Cancer Therapy

Ishiyama

et al. 2012

Abstract:In this paper we present the main ideas and discuss both the feasibility and the conceptual design of a novel hybrid technique and equipment for an experimental cancer therapy based on the simultaneous and/or sequential application of two beams, namely a beam of neutrons and a CW (continuous wave) or intermittent sub-terahertz wave beam produced by a gyrotron for treatment of cancerous tumors. The main simulation tools for the development of the computer aided design (CAD) of the prospective experimental facility for clinical trials and study of such new medical technology are briefly reviewed. Some tasks for a further continuation of this feasibility analysis are formulated as well.