Modeling and measurements of the DUVFEL photoinjector cavity RF properties

J. Rose; William Graves; R. Heese; E. Johnson; S. Krinsky; B. Sheehy

Modeling and measurements of the DUVFEL photoinjector cavity RF properties

J. Rose, William Graves, R. Heese, E. Johnson, S. Krinsky, B. Sheehy

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

Abstract

The 1.6 cell S-band photoinjector cavity has been in operation at the DUVFEL at BNL for the past year. Initial beam measurements indicated a higher than expected emittance and beam divergence at the exit of the gun field imbalance in the two cells was suspected, but lack of field probes in the cavity prohibited direct confirmation. A detailed SUPERFISH model was constructed of the cavity assembly. Field balance as a function of cathode plate and tuner position was determined using the model. A series of calibrated measurements of both the cavity RF properties and the delivered RF power was undertaken. Electron beam properties were also measured as a function of cavity tune. Significant improvements in beam quality were achieved. The simulations and measurements are presented.

Original language	English (US)
Title of host publication	Proceedings of the IEEE Particle Accelerator Conference
Editors	P Lucas, S Webber
Pages	2221-2223
Number of pages	3
Volume	3
State	Published - 2001
Externally published	Yes
Event	2001 Particle Accelerator Conference - Chicago, IL, United States Duration: Jun 18 2001 → Jun 22 2001

Other

Other	2001 Particle Accelerator Conference
Country/Territory	United States
City	Chicago, IL
Period	6/18/01 → 6/22/01

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Modeling and measurements of the DUVFEL photoinjector cavity RF properties",

abstract = "The 1.6 cell S-band photoinjector cavity has been in operation at the DUVFEL at BNL for the past year. Initial beam measurements indicated a higher than expected emittance and beam divergence at the exit of the gun field imbalance in the two cells was suspected, but lack of field probes in the cavity prohibited direct confirmation. A detailed SUPERFISH model was constructed of the cavity assembly. Field balance as a function of cathode plate and tuner position was determined using the model. A series of calibrated measurements of both the cavity RF properties and the delivered RF power was undertaken. Electron beam properties were also measured as a function of cavity tune. Significant improvements in beam quality were achieved. The simulations and measurements are presented.",

author = "J. Rose and William Graves and R. Heese and E. Johnson and S. Krinsky and B. Sheehy",

year = "2001",

language = "English (US)",

volume = "3",

pages = "2221--2223",

editor = "P Lucas and S Webber",

booktitle = "Proceedings of the IEEE Particle Accelerator Conference",

note = "2001 Particle Accelerator Conference ; Conference date: 18-06-2001 Through 22-06-2001",

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TY - GEN

T1 - Modeling and measurements of the DUVFEL photoinjector cavity RF properties

AU - Rose, J.

AU - Graves, William

AU - Heese, R.

AU - Johnson, E.

AU - Krinsky, S.

AU - Sheehy, B.

PY - 2001

Y1 - 2001

N2 - The 1.6 cell S-band photoinjector cavity has been in operation at the DUVFEL at BNL for the past year. Initial beam measurements indicated a higher than expected emittance and beam divergence at the exit of the gun field imbalance in the two cells was suspected, but lack of field probes in the cavity prohibited direct confirmation. A detailed SUPERFISH model was constructed of the cavity assembly. Field balance as a function of cathode plate and tuner position was determined using the model. A series of calibrated measurements of both the cavity RF properties and the delivered RF power was undertaken. Electron beam properties were also measured as a function of cavity tune. Significant improvements in beam quality were achieved. The simulations and measurements are presented.

AB - The 1.6 cell S-band photoinjector cavity has been in operation at the DUVFEL at BNL for the past year. Initial beam measurements indicated a higher than expected emittance and beam divergence at the exit of the gun field imbalance in the two cells was suspected, but lack of field probes in the cavity prohibited direct confirmation. A detailed SUPERFISH model was constructed of the cavity assembly. Field balance as a function of cathode plate and tuner position was determined using the model. A series of calibrated measurements of both the cavity RF properties and the delivered RF power was undertaken. Electron beam properties were also measured as a function of cavity tune. Significant improvements in beam quality were achieved. The simulations and measurements are presented.

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M3 - Conference contribution

AN - SCOPUS:0035570563

VL - 3

SP - 2221

EP - 2223

BT - Proceedings of the IEEE Particle Accelerator Conference

A2 - Lucas, P

A2 - Webber, S

T2 - 2001 Particle Accelerator Conference

Y2 - 18 June 2001 through 22 June 2001

ER -

Modeling and measurements of the DUVFEL photoinjector cavity RF properties

Abstract

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ASJC Scopus subject areas

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