Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2009
The chemical treatment of niobium (Nb) superconducting RF (SRF) cavities, such as those used in nuclear physics research, is an expensive and complex multistep process. Furthermore, after such treatments, the cavity¿s surfaces still have numerous bubbles and pits that result from welding. These quench-producing weld defects, together with particulate contamination, result in a significant degradation of the performance of multi-cell Nb SRF cavities. This project will develop a new chemical-free processing technology for multi-cell Nb SRF cavities. The approach uses an internal electron gun to smooth, clean, purify, and eliminate voids, steps, pits, and other defects, as well as particulate contaminates, from the cavity interior surfaces made of Nb-sheet. Commercial Applications and other Benefits as described by the awardee In addition to its applications for DOE facilities, the proposed process could be implemented with minor modifications into the manufacturing of many other types of RF devices, both superconducting and normal conducting
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 149.97K | Year: 2015
Statement of the problem or situation that is being addressed. This proposed research project responds directly to the need of a high-efficiency continuous-wave microwave source at a frequency of 1.497 GHz delivering at least 8kW of power. This research will provide a klystron with an overall efficiency of 82% and a high degree of backwards compatibility to allow its use as a replacement for klystrons currently used today, which are only 35% efficient. General statement of how this problem is being addressed. FM Technologies, Inc. (FMT) is proposing a novel high-power (8 kW) high-efficiency (82%) continuous- wave (CW) L-band (1.497 GHz) klystron system, which will be named the L-band Micro-Pulse Klystron (L- MPA). The L-MPK is an extension of FMTs patented and proprietary Micro-Pulse Gun (MPG) technology suite that will allow for improved performance and dramatic energy savings. What is to be done in Phase I? In Phase I, design and analysis will be the focus. An continuous-wave (CW) micro-pulse electron gun will be developed, in conjunction with appropriate insulation and post acceleration. A complete system design will be performed for the L-band Micro-Pulse Klystron. Fabrication drawings will be generated for a prototype to be built in Phase II. Commercial Applications and Other Benefits If successful, this L-band Micro-Pulse Klystron will provide a high-power, high-efficiency RF power source that can be scaled to other microwave frequencies and used in a continuous-wave or pulsed mode, making it suitable for many applications. Of particular interest are high-power RF sources for fusion research, linear colliders, free electron lasers, and medical and industrial RF linacs. Key Words: RF source, klystron, fusion Summary for Members of Congress: This program will develop a radio-frequency power source suitable for many applications and of particular importance for large scale accelerators and RF linacs. It will also advance the state of the art of klystron technology, making them more compact, more energy efficient and longer lasting.
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 650.00K | Year: 2006
When muon beams are produced for high energy physics research, they initially have transverse and longitudinal emittances that are too large. Low frequency amplifiers (200 MHz is desired) at high power (10 to 30 Megawatt), with a power gradient of 5 MW/m, are required to ameliorate this problem This program will develop a low frequency, high power amplifier that meets these requirements. By modulating the current of an electron gun, the extracted radio frequency (RF) power from the system will be capable of producing a large range of output frequencies suitable for muon accelerator applications. In Phase I, a theoretical/simulation study with electron gun modulation experiments was conducted to develop a prototype design. The results demonstrated feasibility for the frequency range of interest (88-300 Megahertz). Phase II will build, test and develop a nominal 200 Megahertz, 13 Megawatt, compact, RF amplifier suitable for muon accelerators. Commercial Applications and other Benefits as described by the awardee: An RF amplifier that operates the 20-1000 MHz range should find use in high-energy physics and microwave applications. In addition to muon accelerators, potential applications include UHF and television broadcasting; low-resolution long-range radar, ground-penetrating radar, and land-mine detection. The compact packaging of high RF power would allow for the insertion of these amplifiers into portable systems (including ground based, shipboard, and airborne), leading to broad market penetration, as replacements for current lower power systems become necessary
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 150.00K | Year: 2011
The development of high-current, short-duration pulses of electrons has been a challenging problem for many years. High current pulses are widely used in injector systems for electron accelerators, both for industrial linacs as well as high-energy accelerators for linear colliders. Short-duration pulses are also used for microwave generation, in klystrons and related devices, for injectors to perform research on advanced methods of particle acceleration, and for injectors used as free-electron-laser (FEL) drivers. The proposed method to be described below is promising because of a natural bunching process which self-synchronizes to the rf, thus eliminating the need for pre-buncher section(s), timing system, and laser. Also, the repetition rate can be orders of magnitude greater. FM Technologies proposes a novel high current, picosecond X-band injector system which is named the X-Band Bunched Electron Injector (XBEI). The heart of the XBEI is a self-bunching electron gun the Micro-Pulse Gun (MPG). By adding an external electron amplifier stage and high energy RF post acceleration an inexpensive, simple, robust electron injector would be the outcome. Phase I is aimed at measurements of: electron current gain, charge per bunch, rf power, beam power and other key parameters. Commercial Applications and Other Benefits: If successful, this micro XBEI will provide a high power, low emittance, picosecond-long electron source which is suitable for many applications. Of particular interest are high energy picosecond electron injectors for linear colliders, free electron lasers, medical and industrial rf linacs, a high-harmonic, high-frequency driver for rf sources and accelerator test facilities.
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2005
79197S When muon beams are produced for high energy physics research, they initially have transverse and longitudinal emittances that are too large. Low frequency amplifiers (200 MHz is desired) at high power and a power gradient of 5 MW/m are required to ameliorate this problem This program will develop a low frequency high power amplifier that operates at at least 30 MW, with 200 MHz amplifiers capable of 100 microseconds pulses at a repetition rate of 15 Hz. By modulating the current of an electron gun, the extracted RF power from the system will be capable of producing a large range of output frequencies suitable for muon accelerator applications. In Phase I, a theoretical study and experiments will be conducted to develop the prototype design of the low frequency high power amplifier for 200MHz muon accelerator applications. Commercial Applications and Other Benefits as described by the awardee: A radio frequency (RF) amplifier in the 20-1000 MHz range should be applicable to high-energy physics and to RF microwave applications. Applications include muon accelerators; UHF and television broadcasting; low resolution, long-range radar; ground penetrating radar; and particle accelerators. Compact packaging of high RF power would alllow for the insertion of these amplifiers into portable systems, both ground based, shipboard, and airborne.