Evidence of a halo formation mechanism in the Spallation Neutron Source linac
A new halo formation mechanism and its mitigation scheme [D. Jeon, J. Stovall, A. Aleksandrov, J. Wei, J. Staples, R. Keller, L. Young, H. Takeda, and S. Nath, Phys. Rev. ST Accel. Beams 5, 094201 (2002)PRABFM1098-440210.1103/PhysRevSTAB.5.094201] are verified experimentally through a series of emit...
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doaj-f6767f1b12204cf49e697c5fc452d22c2020-11-25T03:27:03ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022013-04-0116404010310.1103/PhysRevSTAB.16.040103Evidence of a halo formation mechanism in the Spallation Neutron Source linacDong-O JeonA new halo formation mechanism and its mitigation scheme [D. Jeon, J. Stovall, A. Aleksandrov, J. Wei, J. Staples, R. Keller, L. Young, H. Takeda, and S. Nath, Phys. Rev. ST Accel. Beams 5, 094201 (2002)PRABFM1098-440210.1103/PhysRevSTAB.5.094201] are verified experimentally through a series of emittance measurements performed during the drift tube linac tank 1 commissioning of the Spallation Neutron Source. This is a rare experiment evidence of a halo formation mechanism. As the simulation predicts, the emittance measurements clearly show a visible halo reduction as well as a significant rms emittance reduction when the proposed round beam optics is employed. The emittance measurement results are consistent with multiparticle simulations and also consistent with wire scanner results. These measurements serve as a valuable code benchmarking for a beam under an intense space charge effect.http://doi.org/10.1103/PhysRevSTAB.16.040103 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dong-O Jeon |
spellingShingle |
Dong-O Jeon Evidence of a halo formation mechanism in the Spallation Neutron Source linac Physical Review Special Topics. Accelerators and Beams |
author_facet |
Dong-O Jeon |
author_sort |
Dong-O Jeon |
title |
Evidence of a halo formation mechanism in the Spallation Neutron Source linac |
title_short |
Evidence of a halo formation mechanism in the Spallation Neutron Source linac |
title_full |
Evidence of a halo formation mechanism in the Spallation Neutron Source linac |
title_fullStr |
Evidence of a halo formation mechanism in the Spallation Neutron Source linac |
title_full_unstemmed |
Evidence of a halo formation mechanism in the Spallation Neutron Source linac |
title_sort |
evidence of a halo formation mechanism in the spallation neutron source linac |
publisher |
American Physical Society |
series |
Physical Review Special Topics. Accelerators and Beams |
issn |
1098-4402 |
publishDate |
2013-04-01 |
description |
A new halo formation mechanism and its mitigation scheme [D. Jeon, J. Stovall, A. Aleksandrov, J. Wei, J. Staples, R. Keller, L. Young, H. Takeda, and S. Nath, Phys. Rev. ST Accel. Beams 5, 094201 (2002)PRABFM1098-440210.1103/PhysRevSTAB.5.094201] are verified experimentally through a series of emittance measurements performed during the drift tube linac tank 1 commissioning of the Spallation Neutron Source. This is a rare experiment evidence of a halo formation mechanism. As the simulation predicts, the emittance measurements clearly show a visible halo reduction as well as a significant rms emittance reduction when the proposed round beam optics is employed. The emittance measurement results are consistent with multiparticle simulations and also consistent with wire scanner results. These measurements serve as a valuable code benchmarking for a beam under an intense space charge effect. |
url |
http://doi.org/10.1103/PhysRevSTAB.16.040103 |
work_keys_str_mv |
AT dongojeon evidenceofahaloformationmechanisminthespallationneutronsourcelinac |
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