Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode RF gun

D. T. Palmer; R. H. Miller; H. Winick; X. J. Wang; K. Batchelor; M. Woodle; I. Ben-Zvi

Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode RF gun

D. T. Palmer
, R. H. Miller
, H. Winick
, X. J. Wang
, K. Batchelor
, M. Woodle
, I. Ben-Zvi

Physics and Astronomy

Stanford University

Research output: Contribution to conference › Paper › peer-review

28 Scopus citations

Abstract

The longitudinal accelerating field E_z has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA #3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the θ-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using standard Fourier series techniques. The Panofsky-Wenzel theorem is used in estimating the transverse emittance due to the multipole components of E_z.

Original language	English
Pages	982-984
Number of pages	3
State	Published - 1995
Event	Proceedings of the 1995 16th Particle Accelerator Conference. Part 2 (of 5) - Dallas, TX, USA Duration: May 1 1995 → May 5 1995

Conference

Conference	Proceedings of the 1995 16th Particle Accelerator Conference. Part 2 (of 5)
City	Dallas, TX, USA
Period	05/1/95 → 05/5/95

Cite this

@conference{92c6d50d7a0545d4915d11820c13ad47,

title = "Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode RF gun",

abstract = "The longitudinal accelerating field Ez has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA \#3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the θ-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using standard Fourier series techniques. The Panofsky-Wenzel theorem is used in estimating the transverse emittance due to the multipole components of Ez.",

author = "Palmer, \{D. T.\} and Miller, \{R. H.\} and H. Winick and Wang, \{X. J.\} and K. Batchelor and M. Woodle and I. Ben-Zvi",

year = "1995",

language = "English",

pages = "982--984",

note = "Proceedings of the 1995 16th Particle Accelerator Conference. Part 2 (of 5) ; Conference date: 01-05-1995 Through 05-05-1995",

}

TY - CONF

T1 - Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode RF gun

AU - Palmer, D. T.

AU - Miller, R. H.

AU - Winick, H.

AU - Wang, X. J.

AU - Batchelor, K.

AU - Woodle, M.

AU - Ben-Zvi, I.

PY - 1995

Y1 - 1995

N2 - The longitudinal accelerating field Ez has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA #3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the θ-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using standard Fourier series techniques. The Panofsky-Wenzel theorem is used in estimating the transverse emittance due to the multipole components of Ez.

AB - The longitudinal accelerating field Ez has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA #3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the θ-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using standard Fourier series techniques. The Panofsky-Wenzel theorem is used in estimating the transverse emittance due to the multipole components of Ez.

UR - https://www.scopus.com/pages/publications/0029458466

M3 - Paper

AN - SCOPUS:0029458466

SP - 982

EP - 984

T2 - Proceedings of the 1995 16th Particle Accelerator Conference. Part 2 (of 5)

Y2 - 1 May 1995 through 5 May 1995

ER -

Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode RF gun

Abstract

Conference

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