Time-dependent degradation of an ion-focused ATA beam

W. M. Fawley; J. K. Boyd; George J Caporaso; F. W. Chambers; Y. P. Chong; J. S. Hildum; P. Lee; T. J. Orzechowski; D. R. Rogers; K. W. Struve; J. T. Weir

Time-dependent degradation of an ion-focused ATA beam

W. M. Fawley, J. K. Boyd, George J Caporaso, F. W. Chambers, Y. P. Chong, J. S. Hildum, P. Lee, T. J. Orzechowski, D. R. Rogers, K. W. Struve, J. T. Weir

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

Detailed measurements of the time-dependent beam quality of an ATA (Advanced Test Accelerator) pulse transported on a KrF laser-photoionized benzene channel were performed. It was found that the tail portion (τ ≥ 20-30 ns) of the pulse becomes severely degraded both at high currents (I > 3 kA) and at long transport distances. Nonaxisymmetric channel ion motion is suspected as the predominant source of the problem. The authors discuss various experiments which varied laser properties (timing, fluence, profiles), background ion pressure, and electron beam current in order to study the physics behind this degradation.

Original language	English (US)
Title of host publication	Proc 1989 IEEE Part Accel Conf
Editors	Floyd Bennett, Joyce Kopta
Place of Publication	Piscataway, NJ, United States
Publisher	Publ by IEEE
Pages	1489-1491
Number of pages	3
State	Published - 1989
Externally published	Yes
Event	Proceedings of the 1989 IEEE Particle Accelerator Conference - Chicago, IL, USA Duration: Mar 20 1989 → Mar 23 1989

Other

Other	Proceedings of the 1989 IEEE Particle Accelerator Conference
City	Chicago, IL, USA
Period	3/20/89 → 3/23/89

ASJC Scopus subject areas

Engineering(all)

Cite this

Time-dependent degradation of an ion-focused ATA beam. / Fawley, W. M.; Boyd, J. K.; Caporaso, George J; Chambers, F. W.; Chong, Y. P.; Hildum, J. S.; Lee, P.; Orzechowski, T. J.; Rogers, D. R.; Struve, K. W.; Weir, J. T.

Proc 1989 IEEE Part Accel Conf. ed. / Floyd Bennett; Joyce Kopta. Piscataway, NJ, United States : Publ by IEEE, 1989. p. 1489-1491.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fawley, WM, Boyd, JK, Caporaso, GJ, Chambers, FW, Chong, YP, Hildum, JS, Lee, P, Orzechowski, TJ, Rogers, DR, Struve, KW & Weir, JT 1989, Time-dependent degradation of an ion-focused ATA beam. in F Bennett & J Kopta (eds), Proc 1989 IEEE Part Accel Conf. Publ by IEEE, Piscataway, NJ, United States, pp. 1489-1491, Proceedings of the 1989 IEEE Particle Accelerator Conference, Chicago, IL, USA, 3/20/89.

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title = "Time-dependent degradation of an ion-focused ATA beam",

abstract = "Detailed measurements of the time-dependent beam quality of an ATA (Advanced Test Accelerator) pulse transported on a KrF laser-photoionized benzene channel were performed. It was found that the tail portion (τ ≥ 20-30 ns) of the pulse becomes severely degraded both at high currents (I > 3 kA) and at long transport distances. Nonaxisymmetric channel ion motion is suspected as the predominant source of the problem. The authors discuss various experiments which varied laser properties (timing, fluence, profiles), background ion pressure, and electron beam current in order to study the physics behind this degradation.",

author = "Fawley, {W. M.} and Boyd, {J. K.} and Caporaso, {George J} and Chambers, {F. W.} and Chong, {Y. P.} and Hildum, {J. S.} and P. Lee and Orzechowski, {T. J.} and Rogers, {D. R.} and Struve, {K. W.} and Weir, {J. T.}",

year = "1989",

language = "English (US)",

pages = "1489--1491",

editor = "Floyd Bennett and Joyce Kopta",

booktitle = "Proc 1989 IEEE Part Accel Conf",

publisher = "Publ by IEEE",

note = "Proceedings of the 1989 IEEE Particle Accelerator Conference ; Conference date: 20-03-1989 Through 23-03-1989",

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T1 - Time-dependent degradation of an ion-focused ATA beam

AU - Fawley, W. M.

AU - Boyd, J. K.

AU - Caporaso, George J

AU - Chambers, F. W.

AU - Chong, Y. P.

AU - Hildum, J. S.

AU - Lee, P.

AU - Orzechowski, T. J.

AU - Rogers, D. R.

AU - Struve, K. W.

AU - Weir, J. T.

PY - 1989

Y1 - 1989

N2 - Detailed measurements of the time-dependent beam quality of an ATA (Advanced Test Accelerator) pulse transported on a KrF laser-photoionized benzene channel were performed. It was found that the tail portion (τ ≥ 20-30 ns) of the pulse becomes severely degraded both at high currents (I > 3 kA) and at long transport distances. Nonaxisymmetric channel ion motion is suspected as the predominant source of the problem. The authors discuss various experiments which varied laser properties (timing, fluence, profiles), background ion pressure, and electron beam current in order to study the physics behind this degradation.

AB - Detailed measurements of the time-dependent beam quality of an ATA (Advanced Test Accelerator) pulse transported on a KrF laser-photoionized benzene channel were performed. It was found that the tail portion (τ ≥ 20-30 ns) of the pulse becomes severely degraded both at high currents (I > 3 kA) and at long transport distances. Nonaxisymmetric channel ion motion is suspected as the predominant source of the problem. The authors discuss various experiments which varied laser properties (timing, fluence, profiles), background ion pressure, and electron beam current in order to study the physics behind this degradation.

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M3 - Conference contribution

AN - SCOPUS:0024912434

SP - 1489

EP - 1491

BT - Proc 1989 IEEE Part Accel Conf

A2 - Bennett, Floyd

A2 - Kopta, Joyce

PB - Publ by IEEE

CY - Piscataway, NJ, United States

T2 - Proceedings of the 1989 IEEE Particle Accelerator Conference

Y2 - 20 March 1989 through 23 March 1989

ER -

Time-dependent degradation of an ion-focused ATA beam

Abstract

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ASJC Scopus subject areas

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