Zobrazeno 1 - 10
of 662
pro vyhledávání: '"A. Shishlo"'
The impact of high-dimensional phase space correlations on the beam dynamics in a linear accelerator
Hadron beams develop intensity-dependent transverse-longitudinal correlations within radio-frequency quadrupole (RFQ) accelerating structures. These correlations are only visible in six-dimensional phase space and are destroyed by reconstructions fro
Externí odkaz:
http://arxiv.org/abs/2310.04403
Publikováno v:
Phys. Rev. Accel. Beams 23, 124201 (2020)
Modern accelerator front ends almost exclusively include radio-frequency quadrupoles for initial capture and focusing of the low-energy beam. Dynamics in the RFQ define the longitudinal bunch parameters. Simulation of the SNS RFQ with PARMTEQ seeded
Externí odkaz:
http://arxiv.org/abs/2008.06565
Autor:
Cousineau, Sarah, Rakhman, Abdurahim, Kay, Martin, Aleksandrov, Alexander, Danilov, Viatcheslav, Gorlov, Timofey, Liu, Yun, Long, Cary, Menshov, Alexander, Plum, Michael, Shishlo, Andrei, Webster, Andrew, Johnson, David
Publikováno v:
Phys.Rev.Accl.Beams 20, 120402 (2017)
Laser-assisted stripping is a novel approach to H- charge exchange that overcomes long-standing limitations associated with the traditional, foil-based method of producing high-intensity, time-structured beams of protons. This paper reports on the fi
Externí odkaz:
http://arxiv.org/abs/1805.04481
Autor:
Alexander Aleksandrov, Sarah Cousineau, Timofey Gorlov, Yun Liu, Abdurahim Oguz, Andrei Shishlo, Alexander Zhukov, Martin Kay
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 4, p 043501 (2023)
Charge exchange injection is the standard mechanism used to accumulate short, intense pulses of proton beams from an H^{-} injector into a synchrotron. Historically, this process has relied on injection foils to remove the two electrons from the H^{-
Externí odkaz:
https://doaj.org/article/449d68b8da1b46d083437009e1176c37
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 4, p 042801 (2023)
We propose and demonstrate a nonintrusive diagnostic technique for measuring longitudinal bunch profiles of an operational high-power hydrogen ion (H^{−}) beam in the Spallation Neutron Source (SNS) linear accelerator at Oak Ridge National Laborato
Externí odkaz:
https://doaj.org/article/df56f589728047298d2647768e3dec8f
A beam loss in the superconducting part of the SNS linac has been observed during its commissioning and operation. Although the loss does not prevent the SNS high power operation, it results in an almost uniform irradiation of linac components and in
Externí odkaz:
http://arxiv.org/abs/1207.5492
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 4, p 042801 (2022)
Utilizing noninvasive 2D scans with laser wires, we tomographically reconstructed the 4D transverse phase space distribution of a 1-GeV hydrogen ion (i.e., H^{-}) beam during operation. The 4D tomography is based on two new advances. First, we extend
Externí odkaz:
https://doaj.org/article/023497f5b9074da4bbfd2c606e4e4f8f
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 2, p 020101 (2022)
Recent advances in superconducting rf (SRF) technology allow for increasingly more reliable and higher power hadron linacs. They hold enormous potential for economic, scientific, medical, environmental, and national security fields. Moving this techn
Externí odkaz:
https://doaj.org/article/3f7b2755943e43aa8eb7734118704331
Publikováno v:
Трансплантология (Москва), Vol 0, Iss 1, Pp 46-49 (2018)
The kidney cannot be successfully grafted without immunosuppressive therapy. A unicenter retrospective study has evaluated the efficiency of immunosuppression with daclizumab (Zenapax) versus alemtuzumab (Campath).Subjects and methods. After renal al
Externí odkaz:
https://doaj.org/article/e45cac67a0e74be1a92826ba9496924f
Publikováno v:
Трансплантология (Москва), Vol 0, Iss 1, Pp 54-57 (2018)
The review deals with anemia, one of the posttransplantation complications. To define the ways of preventing this complication in the posttransplantation period, the factors favors its development are analyzed. Anemia is shown to negatively affect au
Externí odkaz:
https://doaj.org/article/38898c63ef134bcf941e8863dd9d2f22