Current Status of Nanometer Beam Size Monitor for ATF2

Yohei Yamaguchi, Masahiro Oroku, Jacqueline Yan, Yoshio Kamiya, Sachio Komamiya, Takashi Yamanaka, Taikan Suehara, Toshiyuki Okugi, Nobuhiro Terunuma, Toshiaki Tauchi, Sakae Araki, Junji Urakawa

Research output: Contribution to journalConference article

Abstract

The Accelerator Test Facility 2 (ATF2) is an extension of the ATF beamline extraction featuring an ILC-type final focus system. Among the project's major purposes are establishment of hardware and beam handling technologies aimed at transverse focusing of ATF's electron beam to below 40 nm in the vertical. A laser-interferometer type high resolution beam size monitor named the "Shintake Monitor" is installed at ATF2's virtual interaction point, and plays a crucial role in achieving this aim. A laser interference fringe is formed by crossing two coherent laser rays. This functions as an interaction target for probing the electron beam. Beam size sensitivity of the monitor depends on the pitch of the interference fringe, and maximizes at about one fifth of the pitch. The Shintake Monitor at ATF2 is designed to be capable of measuring beam sizes ranging from 6 μm down to 20 nm in the vertical. A vertical beam size of approximately 300 nm has been measured during the run of May 2010. For this running period, ATF2 operated under a special optics configuration with ten times the nominal IP beta function. For the most recent run, due to switching beam optics back to nominal, BG levels rose about 10 times from May. Shintake Monitor had been proven in May to fulfill expectations provided BG is low. However with high BG, its accuracy decreased, which makes low S/N a major concern. In this paper, we describe the design and current status of the Shintake Monitor.

Original languageEnglish
Pages (from-to)1983-1988
Number of pages6
JournalPhysics Procedia
Volume37
DOIs
Publication statusPublished - Jan 1 2012
Externally publishedYes
Event2nd International Conference on Technology and Instrumentation in Particle Physics, TIPP 2011 - Chicago, United States
Duration: Jun 9 2011Jun 14 2011

Fingerprint

test facilities
monitors
accelerators
F-22 aircraft
beam switching
optics
electron beams
lasers
interference
rays
hardware
interferometers
interactions
sensitivity
high resolution
configurations

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Yamaguchi, Y., Oroku, M., Yan, J., Kamiya, Y., Komamiya, S., Yamanaka, T., ... Urakawa, J. (2012). Current Status of Nanometer Beam Size Monitor for ATF2. Physics Procedia, 37, 1983-1988. https://doi.org/10.1016/j.phpro.2012.02.520

Current Status of Nanometer Beam Size Monitor for ATF2. / Yamaguchi, Yohei; Oroku, Masahiro; Yan, Jacqueline; Kamiya, Yoshio; Komamiya, Sachio; Yamanaka, Takashi; Suehara, Taikan; Okugi, Toshiyuki; Terunuma, Nobuhiro; Tauchi, Toshiaki; Araki, Sakae; Urakawa, Junji.

In: Physics Procedia, Vol. 37, 01.01.2012, p. 1983-1988.

Research output: Contribution to journalConference article

Yamaguchi, Y, Oroku, M, Yan, J, Kamiya, Y, Komamiya, S, Yamanaka, T, Suehara, T, Okugi, T, Terunuma, N, Tauchi, T, Araki, S & Urakawa, J 2012, 'Current Status of Nanometer Beam Size Monitor for ATF2', Physics Procedia, vol. 37, pp. 1983-1988. https://doi.org/10.1016/j.phpro.2012.02.520
Yamaguchi Y, Oroku M, Yan J, Kamiya Y, Komamiya S, Yamanaka T et al. Current Status of Nanometer Beam Size Monitor for ATF2. Physics Procedia. 2012 Jan 1;37:1983-1988. https://doi.org/10.1016/j.phpro.2012.02.520
Yamaguchi, Yohei ; Oroku, Masahiro ; Yan, Jacqueline ; Kamiya, Yoshio ; Komamiya, Sachio ; Yamanaka, Takashi ; Suehara, Taikan ; Okugi, Toshiyuki ; Terunuma, Nobuhiro ; Tauchi, Toshiaki ; Araki, Sakae ; Urakawa, Junji. / Current Status of Nanometer Beam Size Monitor for ATF2. In: Physics Procedia. 2012 ; Vol. 37. pp. 1983-1988.
@article{53a5cc46354a436d9c8de3f29cc1605f,
title = "Current Status of Nanometer Beam Size Monitor for ATF2",
abstract = "The Accelerator Test Facility 2 (ATF2) is an extension of the ATF beamline extraction featuring an ILC-type final focus system. Among the project's major purposes are establishment of hardware and beam handling technologies aimed at transverse focusing of ATF's electron beam to below 40 nm in the vertical. A laser-interferometer type high resolution beam size monitor named the {"}Shintake Monitor{"} is installed at ATF2's virtual interaction point, and plays a crucial role in achieving this aim. A laser interference fringe is formed by crossing two coherent laser rays. This functions as an interaction target for probing the electron beam. Beam size sensitivity of the monitor depends on the pitch of the interference fringe, and maximizes at about one fifth of the pitch. The Shintake Monitor at ATF2 is designed to be capable of measuring beam sizes ranging from 6 μm down to 20 nm in the vertical. A vertical beam size of approximately 300 nm has been measured during the run of May 2010. For this running period, ATF2 operated under a special optics configuration with ten times the nominal IP beta function. For the most recent run, due to switching beam optics back to nominal, BG levels rose about 10 times from May. Shintake Monitor had been proven in May to fulfill expectations provided BG is low. However with high BG, its accuracy decreased, which makes low S/N a major concern. In this paper, we describe the design and current status of the Shintake Monitor.",
author = "Yohei Yamaguchi and Masahiro Oroku and Jacqueline Yan and Yoshio Kamiya and Sachio Komamiya and Takashi Yamanaka and Taikan Suehara and Toshiyuki Okugi and Nobuhiro Terunuma and Toshiaki Tauchi and Sakae Araki and Junji Urakawa",
year = "2012",
month = "1",
day = "1",
doi = "10.1016/j.phpro.2012.02.520",
language = "English",
volume = "37",
pages = "1983--1988",
journal = "Physics Procedia",
issn = "1875-3892",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Current Status of Nanometer Beam Size Monitor for ATF2

AU - Yamaguchi, Yohei

AU - Oroku, Masahiro

AU - Yan, Jacqueline

AU - Kamiya, Yoshio

AU - Komamiya, Sachio

AU - Yamanaka, Takashi

AU - Suehara, Taikan

AU - Okugi, Toshiyuki

AU - Terunuma, Nobuhiro

AU - Tauchi, Toshiaki

AU - Araki, Sakae

AU - Urakawa, Junji

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The Accelerator Test Facility 2 (ATF2) is an extension of the ATF beamline extraction featuring an ILC-type final focus system. Among the project's major purposes are establishment of hardware and beam handling technologies aimed at transverse focusing of ATF's electron beam to below 40 nm in the vertical. A laser-interferometer type high resolution beam size monitor named the "Shintake Monitor" is installed at ATF2's virtual interaction point, and plays a crucial role in achieving this aim. A laser interference fringe is formed by crossing two coherent laser rays. This functions as an interaction target for probing the electron beam. Beam size sensitivity of the monitor depends on the pitch of the interference fringe, and maximizes at about one fifth of the pitch. The Shintake Monitor at ATF2 is designed to be capable of measuring beam sizes ranging from 6 μm down to 20 nm in the vertical. A vertical beam size of approximately 300 nm has been measured during the run of May 2010. For this running period, ATF2 operated under a special optics configuration with ten times the nominal IP beta function. For the most recent run, due to switching beam optics back to nominal, BG levels rose about 10 times from May. Shintake Monitor had been proven in May to fulfill expectations provided BG is low. However with high BG, its accuracy decreased, which makes low S/N a major concern. In this paper, we describe the design and current status of the Shintake Monitor.

AB - The Accelerator Test Facility 2 (ATF2) is an extension of the ATF beamline extraction featuring an ILC-type final focus system. Among the project's major purposes are establishment of hardware and beam handling technologies aimed at transverse focusing of ATF's electron beam to below 40 nm in the vertical. A laser-interferometer type high resolution beam size monitor named the "Shintake Monitor" is installed at ATF2's virtual interaction point, and plays a crucial role in achieving this aim. A laser interference fringe is formed by crossing two coherent laser rays. This functions as an interaction target for probing the electron beam. Beam size sensitivity of the monitor depends on the pitch of the interference fringe, and maximizes at about one fifth of the pitch. The Shintake Monitor at ATF2 is designed to be capable of measuring beam sizes ranging from 6 μm down to 20 nm in the vertical. A vertical beam size of approximately 300 nm has been measured during the run of May 2010. For this running period, ATF2 operated under a special optics configuration with ten times the nominal IP beta function. For the most recent run, due to switching beam optics back to nominal, BG levels rose about 10 times from May. Shintake Monitor had been proven in May to fulfill expectations provided BG is low. However with high BG, its accuracy decreased, which makes low S/N a major concern. In this paper, we describe the design and current status of the Shintake Monitor.

UR - http://www.scopus.com/inward/record.url?scp=85039057351&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039057351&partnerID=8YFLogxK

U2 - 10.1016/j.phpro.2012.02.520

DO - 10.1016/j.phpro.2012.02.520

M3 - Conference article

AN - SCOPUS:85039057351

VL - 37

SP - 1983

EP - 1988

JO - Physics Procedia

JF - Physics Procedia

SN - 1875-3892

ER -