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pro vyhledávání: '"Powers T"'
Plasma processing of superconducting radio frequency (SRF) cavities has shown an improvement in accelerating gradient by reducing the radiation due to field emission and multipacting. Plasma processing is a common technique where the free oxygen prod
Externí odkaz:
http://arxiv.org/abs/2405.10406
Autor:
Powers, T., Rajapakse, R. M.
Key properties of physical systems can be described by the eigenvalues of matrices that represent the system. Computational algorithms that determine the eigenvalues of these matrices exist, but they generally suffer from a loss of performance as the
Externí odkaz:
http://arxiv.org/abs/2310.19104
Plasma processing using a mixture of noble gas and oxygen is a technique that is currently being used to reduce field emission and multipacting in accelerating cavities. Plasma is created inside the cavity when the gas mixture is exposed to an electr
Externí odkaz:
http://arxiv.org/abs/2306.10967
Development of a prototype superconducting radio-frequency cavity for conduction-cooled accelerators
Autor:
Ciovati, G., Anderson, J., Balachandran, S., Cheng, G., Coriton, B., Daly, E., Dhakal, P., Gurevich, A., Hannon, F., Harding, K., Holland, L., Marhauser, F., McLaughlin, K., Packard, D., Powers, T., Pudasaini, U., Rathke, J., Rimmer, R., Schultheiss, T., Vennekate, H., Vollmer, D.
Publikováno v:
Phys. Rev. Accel. Beams 26, 044701 (2023)
The higher efficiency of superconducting radio-frequency (SRF) cavities compared to normal-conducting ones enables the development of high-energy continuous-wave linear accelerators (linacs). Recent progress in the development of high-quality Nb$_3$S
Externí odkaz:
http://arxiv.org/abs/2302.07201
Autor:
Martinello, M., Berrutti, P., Giaccone, B., Belomestnykh, S., Checchin, M., Eremeev, G. V., Grassellino, A., Khabibouilline, T., Netepenko, A., Pilipenko, R., Romanenko, A., Posen, S., Wu, G., Gonnella, D., Ross, M., Maniscalco, J. T., Powers, T.
Field emission (FE) is one of the main limiting factors of superconducting radio-frequency (SRF) cavities operating in accelerators and it occurs whenever contaminants, like dust, metal flakes or even absorbates, are present on the surface of the cav
Externí odkaz:
http://arxiv.org/abs/2203.12442
Autor:
Bruker, M. W., Benson, S., Hutton, A., Jordan, K., Powers, T., Rimmer, R., Satogata, T., Sy, A., Wang, H., Wang, S., Zhang, H., Zhang, Y., Ma, F., Li, J., Ma, X. M., Mao, L. J., Sha, X. P., Tang, M. T., Yang, J. C., Yang, X. D., Zhao, H., Zhao, H. W.
Cooling of hadron beams is critically important in the next generation of hadron storage rings for delivery of unprecedented performance. One such application is the electron-ion collider presently under development in the US. The desire to develop e
Externí odkaz:
http://arxiv.org/abs/2010.15791
Autor:
Verdú-Andrés, S., Artoos, K., Belomestnykh, S., Ben-Zvi, I., Boulware, C., Burt, G., Calaga, R., Capatina, O., Carra, F., Castilla, A., Clemens, W., Grimm, T., Kuder, N., Leuxe, R., Li, Z., McEwen, E. A., Park, H., Powers, T., Ratti, A., Shipman, N., Skaritka, J., Wu, Q., Xiao, B. P., Yancey, J., Zanoni, C.
Publikováno v:
Phys. Rev. Accel. Beams 21, 082002 (2018)
Crab crossing is essential for high-luminosity colliders. The High Luminosity Large Hadron Collider (HL-LHC) will equip one of its Interaction Points (IP1) with Double-Quarter Wave (DQW) crab cavities. A DQW cavity is a new generation of deflecting R
Externí odkaz:
http://arxiv.org/abs/1805.08123
Autor:
Zhao, H., Mao, L.J., Zhang, Y.H., Wang, H.P., Yang, J.C., Powers, T., Tang, M.T., Li, J., Ma, X.M., Yang, X.D., Jordan, K., Wang, S.H., Zhang, H., Dong, Z.Q., Spata, M.
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 11 September 2018 902:219-227
Recently Bar-Ziv and Moses discovered a dynamical shape transformation induced in cylindrical lipid bilayer vesicles by the action of laser tweezers. We develop a hydrodynamic theory of fluid bilayers in interaction with the surrounding water and arg
Externí odkaz:
http://arxiv.org/abs/cond-mat/9510093
We study two geometrical factors needed for the correct construction of statistical ensembles of surfaces. Such ensembles appear in the study of fluid bilayer membranes, though our results are more generally applicable. The naive functional measure o
Externí odkaz:
http://arxiv.org/abs/cond-mat/9401020