Longitudinal laser wire at SNS

A. Zhukov; A. Aleksandrov; Y. Liu

Longitudinal laser wire at SNS

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

3 Scopus citations

Abstract

This paper describes a longitudinal H- beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H- energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.

Original language	English
State	Published - 2014
Event	3rd International Beam Instrumentation Conference, IBIC 2014 - Monterey, United States Duration: Sep 14 2014 → Sep 18 2014

Conference

Conference	3rd International Beam Instrumentation Conference, IBIC 2014
Country/Territory	United States
City	Monterey
Period	09/14/14 → 09/18/14

Cite this

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title = "Longitudinal laser wire at SNS",

abstract = "This paper describes a longitudinal H- beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H- energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.",

author = "A. Zhukov and A. Aleksandrov and Y. Liu",

year = "2014",

language = "English",

note = "3rd International Beam Instrumentation Conference, IBIC 2014 ; Conference date: 14-09-2014 Through 18-09-2014",

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TY - CONF

T1 - Longitudinal laser wire at SNS

AU - Zhukov, A.

AU - Aleksandrov, A.

AU - Liu, Y.

PY - 2014

Y1 - 2014

N2 - This paper describes a longitudinal H- beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H- energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.

AB - This paper describes a longitudinal H- beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H- energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.

UR - http://www.scopus.com/inward/record.url?scp=84920733790&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84920733790

T2 - 3rd International Beam Instrumentation Conference, IBIC 2014

Y2 - 14 September 2014 through 18 September 2014

ER -

Longitudinal laser wire at SNS

Abstract

Conference

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