Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Wuensch Walter"'
Autor:
Martinez-Calderon Miguel, Groussin Baptiste, Bjelland Victoria, Chevallay Eric, Fedosseev Valentin N., Himmerlich Marcel, Lorenz Pierre, Manjavacas Alejandro, Marsh Bruce A., Neupert Holger, Rossel Ralf E., Wuensch Walter, Granados Eduardo
Publikováno v:
Nanophotonics, Vol 13, Iss 11, Pp 1975-1983 (2023)
Photocathodes are key elements in high-brightness electron sources and ubiquitous in the operation of large-scale accelerators, although their operation is often limited by their quantum efficiency and lifetime. Here, we propose to overcome these lim
Externí odkaz:
https://doaj.org/article/061de9c92a8743daab183e11a22d4146
Autor:
Jacewicz, Marek, Profatilova, Iaroslava, Szaniawski, Piotr, Popov, Inna, Ashkenazy, Yinon, Calatroni, Sergio, Wuensch, Walter
In order to investigate the dependence of conditioning and field-holding on temperature, three pairs of copper electrodes underwent high voltage conditioning with direct current (DC) pulses while kept at a single temperature, unique for each set (300
Externí odkaz:
http://arxiv.org/abs/2403.03198
Autor:
Golm, Jessica, García-Barceló, Jose María, Calatroni, Sergio, Wuensch, Walter, Döbrich, Babette
The axion haloscope is the currently most sensitive method to probe the vanishingly small coupling of this prominent Dark Matter candidate to photons. To scan a sizeable axion Dark Matter parameter space, the cavities that make up the haloscope need
Externí odkaz:
http://arxiv.org/abs/2312.13109
A novel quantity for predicting the high-gradient performance of radio frequency accelerating structures is presented. The quantity is motivated, derived and compared with earlier high-gradient limits and experiments. This new method models a nascent
Externí odkaz:
http://arxiv.org/abs/2209.15291
Autor:
Lopez-Cazalilla, A., Serafim, Catarina, Djurabekova, F., Perez-Fontenla, Ana Teresa, Calatroni, Sergio, Wuensch, Walter
When metal surfaces are exposed to hydrogen ion irradiation, the light ions are expected to penetrate deep into the material and dissolve in the matrix. However, these atoms are seen to cause significant modification of surfaces, indicating that they
Externí odkaz:
http://arxiv.org/abs/2209.14068
Autor:
Obermair, Christoph, Cartier-Michaud, Thomas, Apollonio, Andrea, Millar, William, Felsberger, Lukas, Fischl, Lorenz, Bovbjerg, Holger Severin, Wollmann, Daniel, Wuensch, Walter, Catalan-Lasheras, Nuria, Boronat, Marçà, Pernkopf, Franz, Burt, Graeme
The occurrence of vacuum arcs or radio frequency (rf) breakdowns is one of the most prevalent factors limiting the high-gradient performance of normal conducting rf cavities in particle accelerators. In this paper, we search for the existence of prev
Externí odkaz:
http://arxiv.org/abs/2202.05610
Autor:
Saressalo, Anton, Profatilova, Iaroslava, Millar, William L., Kyritsakis, Andreas, Calatroni, Sergio, Wuensch, Walter, Djurabekova, Flyura
Publikováno v:
Phys. Rev. Accel. Beams 23, 113101 (2020)
Vacuum electrical breakdowns, also known as vacuum arcs, are a limiting factor in many devices that are based on application of high electric fields near their component surfaces. Understanding of processes that lead to breakdown events may help miti
Externí odkaz:
http://arxiv.org/abs/2008.02130
Autor:
Saressalo, Anton, Profatilova, Iaroslava, Kyritsakis, Andreas, Paszkiewicz, Jan, Calatroni, Sergio, Wuensch, Walter, Djurabekova, Flyura
Publikováno v:
Phys. Rev. Accel. Beams 23, 023101 (2020)
Understanding the microscopic phenomena behind vacuum arc ignition and generation is crucial for being able to control the breakdown rate, thus improving the effectiveness of many high-voltage applications where frequent breakdowns limit the operatio
Externí odkaz:
http://arxiv.org/abs/1911.05192
Autor:
Korsbäck, Anders, Morales, Laura Mercadé, Profatilova, Iaroslava, Djurabekova, Flyura, Castro, Enrique Rodriguez, Wuensch, Walter, Ahlgren, Tommy, Calatroni, Sergio
Publikováno v:
Phys. Rev. Accel. Beams 23, 033102 (2020)
Conditioning of a metal structure in a high-voltage system is the progressive development of resistance to vacuum arcing over the operational life of the system. This is, for instance, seen during the initial operation of radio frequency (rf) cavitie
Externí odkaz:
http://arxiv.org/abs/1905.03996
Autor:
Melcón, Alejandro Álvarez, Cuendis, Sergio Arguedas, Cogollos, Cristian, Díaz-Morcillo, Alejandro, Döbrich, Babette, Gallego, Juan Daniel, Gimeno, Benito, Irastorza, Igor G., Lozano-Guerrero, Antonio José, Malbrunot, Chloé, Navarro, Pablo, Garay, Carlos Peña, Redondo, Javier, Vafeiadis, Theodoros, Wuensch, Walter
We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 $\mu$eV. Theses masses are located somewhat above the mass range in w
Externí odkaz:
http://arxiv.org/abs/1803.01243