Paper | Title | Page |
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MOPLH16 | Femtosecond Laser Microfabrication for Advanced Accelerator Applications | 207 |
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Funding: DOE SBIR Femtosecond laser microfabrication allows for precise dimension control and reduced thermal stress of the machined materials. It can be applied to a wide range of materials from copper to diamond. Combined with secondary operations like polishing laser microfabrication can be utilized in various state of the art components required for AAC community. In this paper we will review several applications of laser microfabrication for Advanced Accelerator research and development. These will include wakefield structures (corrugated metal and dielectric loaded), plasma capillaries, x-ray refractive optics, high power laser optical components: mirrors, phase plates. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-MOPLH16 | |
About • | paper received ※ 28 August 2019 paper accepted ※ 31 August 2019 issue date ※ 08 October 2019 | |
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TUPLH08 | X-Ray and Charged Particle Detection by Detuning of a Microwave Resonator | 503 |
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Funding: DOE SBIR Charged particle detection is important for beam alignment, beam loss and background control. In case of halo detection, traditional wire scanner measurement utilizing carbon or tungsten wires is limited by the damage threshold of these materials. In this paper we present an electrodeless method to measure halo with a diamond scraper. This measurement utilizes a microwave resonator placed around the diamond scraper which is sensitive to charged particle-induced conductivity. Due to this transient induced conductivity in the dielectric, a microwave coupling to the resonator changes. Diamond in this case is chosen as a radiation hard material with excellent thermal properties. The absence of electrodes makes the device robust under the beam. The same measurement can be done for x-ray flux monitoring which is important for measurement feedback and calibration at modern x-ray light sources. In this case x-rays passing through the diamond sensing element enable a photo-induced conductivity and that in turn detunes the cavity placed around the diamond. Diamond being a low-Z material allows for in-line x-ray flux measurement without significant beam attenuation. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-TUPLH08 | |
About • | paper received ※ 28 August 2019 paper accepted ※ 05 September 2019 issue date ※ 08 October 2019 | |
Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |