Zobrazeno 1 - 10
of 348
pro vyhledávání: '"A. Shishlo"'
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
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:
Physical Review Accelerators and Beams, Vol 21, Iss 9, p 092803 (2018)
Knowledge of the longitudinal beam parameters is important for understanding beam dynamics in hadron linacs. Recently, a noninterceptive method suitable for measuring the longitudinal rms Twiss parameters in the high energy part of a hadron linac was
Externí odkaz:
https://doaj.org/article/8a309d3d25d349f3bbeb03b2cbcd4a99
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:
A. Shishlo, A. Aleksandrov
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 6, p 062801 (2013)
A new method of measuring of the rms longitudinal Twiss parameters of a beam in linear accelerators is presented. It is based on using sum signals from beam position monitors sensitive to the longitudinal charge distribution in the bunch. The applica
Externí odkaz:
https://doaj.org/article/efc20aaa06244daaae54ac52cf71754d
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 5, p 050101 (2010)
The use of stripping foils for charge exchange injection can cause a number of operational problems in high intensity hadron accelerators. A recently proposed three-step method of laser-assisted injection is capable of overcoming these problems. This
Externí odkaz:
https://doaj.org/article/8548a37ea7314f26ba1786c439f60ebc
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 11, Iss 10, p 104001 (2008)
The longitudinal acceptance of the Spallation Neutron Source superconducting linac is computed with a longitudinal model. A beam current monitor and beam loss monitors are utilized in a new beam acceptance measurement technique, and the measured resu
Externí odkaz:
https://doaj.org/article/34f607fa6b2c48649f1cc4c3142f3aff
Autor:
V. Danilov, A. Aleksandrov, S. Assadi, J. Barhen, W. Blokland, Y. Braiman, D. Brown, C. Deibele, W. Grice, S. Henderson, J. Holmes, Y. Liu, A. Shishlo, A. Webster, I. N. Nesterenko
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 10, Iss 5, p 053501 (2007)
Thin carbon foils are used as strippers for charge exchange injection into high intensity proton rings. However, the stripping foils become radioactive and produce uncontrolled beam loss, which is one of the main factors limiting beam power in high i
Externí odkaz:
https://doaj.org/article/a1719c9bdc1d4d4fbe90fa1dbf1c2f0b
Autor:
V. Danilov, A. Aleksandrov, S. Assadi, S. Henderson, N. Holtkamp, T. Shea, A. Shishlo, Y. Braiman, Y. Liu, J. Barhen, T. Zacharia
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 6, Iss 5, p 053501 (2003)
This paper presents a scheme for three-step laser-based stripping of an H^{-} beam for charge exchange injection into a high-intensity proton ring. First, H^{-} atoms are converted to H^{0} by Lorentz stripping in a strong magnetic field, then neutra
Externí odkaz:
https://doaj.org/article/b1a32ccd40e4470eb1b21b207c437ddb
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