Measurement of coherent off-axis undulator radiation as a beam diagnostic

C. P. Neuman; William Graves; G. L. Carr; P. G. O'Shea

Measurement of coherent off-axis undulator radiation as a beam diagnostic

C. P. Neuman, William Graves, G. L. Carr, P. G. O'Shea

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

Abstract

A diagnostic undulator is used to measure relative electron bunch lengths. The radiation produced by the short undulator is observed off-axis so that the beam is not interrupted. Wavelengths radiated which are longer than the bunch length are coherent and may be more intense than the shorter wavelengths by a factor of up to 10⁹. The total energy radiated thus changes as the bunch length changes, and a measurement of the radiated energy provides a robust beam diagnostic. This non-disturbing diagnostic would be useful in applications where the length of short electron bunches is critical, such as single-pass FELs and linear colliders. For example, real-time bunch length measurements could be used to optimize performance of a single-pass FEL. The experiment is performed at the Source Development Lab (SDL) at Brookhaven National Laboratory. The theory and description of the experiment are reviewed, and the first experimental results are presented.

Original language	English (US)
Title of host publication	Proceedings of the IEEE Particle Accelerator Conference
Editors	P Lucas, S Webber
Pages	2368-2370
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

General Engineering

Cite this

@inproceedings{0cbf9bf4a2b64d508e5242b520b65855,

title = "Measurement of coherent off-axis undulator radiation as a beam diagnostic",

abstract = "A diagnostic undulator is used to measure relative electron bunch lengths. The radiation produced by the short undulator is observed off-axis so that the beam is not interrupted. Wavelengths radiated which are longer than the bunch length are coherent and may be more intense than the shorter wavelengths by a factor of up to 109. The total energy radiated thus changes as the bunch length changes, and a measurement of the radiated energy provides a robust beam diagnostic. This non-disturbing diagnostic would be useful in applications where the length of short electron bunches is critical, such as single-pass FELs and linear colliders. For example, real-time bunch length measurements could be used to optimize performance of a single-pass FEL. The experiment is performed at the Source Development Lab (SDL) at Brookhaven National Laboratory. The theory and description of the experiment are reviewed, and the first experimental results are presented.",

author = "Neuman, {C. P.} and William Graves and Carr, {G. L.} and O'Shea, {P. G.}",

year = "2001",

language = "English (US)",

volume = "3",

pages = "2368--2370",

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 - Measurement of coherent off-axis undulator radiation as a beam diagnostic

AU - Neuman, C. P.

AU - Graves, William

AU - Carr, G. L.

AU - O'Shea, P. G.

PY - 2001

Y1 - 2001

N2 - A diagnostic undulator is used to measure relative electron bunch lengths. The radiation produced by the short undulator is observed off-axis so that the beam is not interrupted. Wavelengths radiated which are longer than the bunch length are coherent and may be more intense than the shorter wavelengths by a factor of up to 109. The total energy radiated thus changes as the bunch length changes, and a measurement of the radiated energy provides a robust beam diagnostic. This non-disturbing diagnostic would be useful in applications where the length of short electron bunches is critical, such as single-pass FELs and linear colliders. For example, real-time bunch length measurements could be used to optimize performance of a single-pass FEL. The experiment is performed at the Source Development Lab (SDL) at Brookhaven National Laboratory. The theory and description of the experiment are reviewed, and the first experimental results are presented.

AB - A diagnostic undulator is used to measure relative electron bunch lengths. The radiation produced by the short undulator is observed off-axis so that the beam is not interrupted. Wavelengths radiated which are longer than the bunch length are coherent and may be more intense than the shorter wavelengths by a factor of up to 109. The total energy radiated thus changes as the bunch length changes, and a measurement of the radiated energy provides a robust beam diagnostic. This non-disturbing diagnostic would be useful in applications where the length of short electron bunches is critical, such as single-pass FELs and linear colliders. For example, real-time bunch length measurements could be used to optimize performance of a single-pass FEL. The experiment is performed at the Source Development Lab (SDL) at Brookhaven National Laboratory. The theory and description of the experiment are reviewed, and the first experimental results are presented.

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UR - http://www.scopus.com/inward/citedby.url?scp=0035571321&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0035571321

VL - 3

SP - 2368

EP - 2370

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 -

Measurement of coherent off-axis undulator radiation as a beam diagnostic

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