First test of the Imperial College Gabor (plasma) lens prototype at the Surrey ion beam centre

P. A. Posocco; J. K. Pozimski; Y. Xia; M. Merchant

First test of the Imperial College Gabor (plasma) lens prototype at the Surrey ion beam centre

P. A. Posocco, J. K. Pozimski, Y. Xia, M. Merchant

Division of Cancer Sciences

Imperial College London

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

Abstract

The first plasma (Gabor) lens prototype operating at high electron density was built by the Imperial College London in 2015. In November 2015 the lens was tested at the Ion Beam Centre of the University of Surrey with a 1 MeV proton beam. Over 500 snapshots of the beam hitting a scintillator screen installed 0.5 m downstream of the lens were taken for a wide range of settings. Unexpectedly, instead of over- or underfocusing the incoming particles, the lens converted pencil beams into rings. In addition to the dependence of their radius on the lens settings, periodic features appeared along the circumference, suggesting that the electron plasma was exited into a coherent off-axis rotation. The cause of this phenomenon is under investigation.

Original language	English
Title of host publication	IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
Publisher	JACoW
Pages	1598-1600
Number of pages	3
ISBN (Electronic)	9783954501472
Publication status	Published - 1 Jan 2016
Event	7th International Particle Accelerator Conference - Busan, Korea, Republic of Duration: 8 May 2016 → 13 May 2016

Conference

Conference	7th International Particle Accelerator Conference
Abbreviated title	IPAC 2016
Country/Territory	Korea, Republic of
City	Busan
Period	8/05/16 → 13/05/16

Cite this

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title = "First test of the Imperial College Gabor (plasma) lens prototype at the Surrey ion beam centre",

abstract = "The first plasma (Gabor) lens prototype operating at high electron density was built by the Imperial College London in 2015. In November 2015 the lens was tested at the Ion Beam Centre of the University of Surrey with a 1 MeV proton beam. Over 500 snapshots of the beam hitting a scintillator screen installed 0.5 m downstream of the lens were taken for a wide range of settings. Unexpectedly, instead of over- or underfocusing the incoming particles, the lens converted pencil beams into rings. In addition to the dependence of their radius on the lens settings, periodic features appeared along the circumference, suggesting that the electron plasma was exited into a coherent off-axis rotation. The cause of this phenomenon is under investigation.",

author = "Posocco, {P. A.} and Pozimski, {J. K.} and Y. Xia and M. Merchant",

year = "2016",

month = jan,

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language = "English",

pages = "1598--1600",

booktitle = "IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference",

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note = "7th International Particle Accelerator Conference, IPAC 2016 ; Conference date: 08-05-2016 Through 13-05-2016",

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T1 - First test of the Imperial College Gabor (plasma) lens prototype at the Surrey ion beam centre

AU - Posocco, P. A.

AU - Pozimski, J. K.

AU - Xia, Y.

AU - Merchant, M.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The first plasma (Gabor) lens prototype operating at high electron density was built by the Imperial College London in 2015. In November 2015 the lens was tested at the Ion Beam Centre of the University of Surrey with a 1 MeV proton beam. Over 500 snapshots of the beam hitting a scintillator screen installed 0.5 m downstream of the lens were taken for a wide range of settings. Unexpectedly, instead of over- or underfocusing the incoming particles, the lens converted pencil beams into rings. In addition to the dependence of their radius on the lens settings, periodic features appeared along the circumference, suggesting that the electron plasma was exited into a coherent off-axis rotation. The cause of this phenomenon is under investigation.

AB - The first plasma (Gabor) lens prototype operating at high electron density was built by the Imperial College London in 2015. In November 2015 the lens was tested at the Ion Beam Centre of the University of Surrey with a 1 MeV proton beam. Over 500 snapshots of the beam hitting a scintillator screen installed 0.5 m downstream of the lens were taken for a wide range of settings. Unexpectedly, instead of over- or underfocusing the incoming particles, the lens converted pencil beams into rings. In addition to the dependence of their radius on the lens settings, periodic features appeared along the circumference, suggesting that the electron plasma was exited into a coherent off-axis rotation. The cause of this phenomenon is under investigation.

UR - http://www.scopus.com/inward/record.url?scp=85015299145&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85015299145

SP - 1598

EP - 1600

BT - IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference

PB - JACoW

T2 - 7th International Particle Accelerator Conference

Y2 - 8 May 2016 through 13 May 2016

ER -

First test of the Imperial College Gabor (plasma) lens prototype at the Surrey ion beam centre

Abstract

Conference

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