A new positron pulsing system with a compact cyclotron based slow positron beam

M. Hirose, T. Nakajyo, Masakazu Washio

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A new positron pulsing system has been developed for the first time using an induction cavity. The slow positron beam is provided by using a compact cyclotron. In order to use the slow positron beam from the compact cyclotron for the analyses of material surfaces such as variable-energy positron lifetime spectroscopy, we have developed a new positron pulsing system. In the new system, slow positron beam bunching is performed by applying an induction cavity instead of a usual rf cavity. The induction cavity makes it possible to produce any kind of electric field change according to time. Hence the bunching efficiency of the induction cavity should be higher than that of rf cavity which can produce only sine curves electric field change according to time. In a preliminary slow positron beam bunching test using the induction cavity, a pulse width of about 300 ps has been achieved. A fine tuning for achieving a pulse width of 150 ps is in progress. Another new compact cyclotron and a new slow positron beam facility have also been constructed next to the present ones. The design of the new facility will be also reported.

Original languageEnglish
Pages (from-to)674-676
Number of pages3
JournalMaterials Science Forum
Volume255-257
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Cyclotrons
Positrons
cyclotrons
positrons
cavities
induction
bunching
pulse duration
Electric fields
electric fields
Tuning
tuning
Spectroscopy
life (durability)
curves
spectroscopy

Keywords

  • Cyclotron
  • Induction Cavity
  • Positron Pulsing System
  • Slow Positron Beam
  • Slow Positron Beam Bunching
  • Variable-Energy Positron Lifetime Spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A new positron pulsing system with a compact cyclotron based slow positron beam. / Hirose, M.; Nakajyo, T.; Washio, Masakazu.

In: Materials Science Forum, Vol. 255-257, 1997, p. 674-676.

Research output: Contribution to journalArticle

@article{89a0b51ae34e48ce86a7bb293d54ffe5,
title = "A new positron pulsing system with a compact cyclotron based slow positron beam",
abstract = "A new positron pulsing system has been developed for the first time using an induction cavity. The slow positron beam is provided by using a compact cyclotron. In order to use the slow positron beam from the compact cyclotron for the analyses of material surfaces such as variable-energy positron lifetime spectroscopy, we have developed a new positron pulsing system. In the new system, slow positron beam bunching is performed by applying an induction cavity instead of a usual rf cavity. The induction cavity makes it possible to produce any kind of electric field change according to time. Hence the bunching efficiency of the induction cavity should be higher than that of rf cavity which can produce only sine curves electric field change according to time. In a preliminary slow positron beam bunching test using the induction cavity, a pulse width of about 300 ps has been achieved. A fine tuning for achieving a pulse width of 150 ps is in progress. Another new compact cyclotron and a new slow positron beam facility have also been constructed next to the present ones. The design of the new facility will be also reported.",
keywords = "Cyclotron, Induction Cavity, Positron Pulsing System, Slow Positron Beam, Slow Positron Beam Bunching, Variable-Energy Positron Lifetime Spectroscopy",
author = "M. Hirose and T. Nakajyo and Masakazu Washio",
year = "1997",
language = "English",
volume = "255-257",
pages = "674--676",
journal = "Materials Science Forum",
issn = "0255-5476",
publisher = "Trans Tech Publications",

}

TY - JOUR

T1 - A new positron pulsing system with a compact cyclotron based slow positron beam

AU - Hirose, M.

AU - Nakajyo, T.

AU - Washio, Masakazu

PY - 1997

Y1 - 1997

N2 - A new positron pulsing system has been developed for the first time using an induction cavity. The slow positron beam is provided by using a compact cyclotron. In order to use the slow positron beam from the compact cyclotron for the analyses of material surfaces such as variable-energy positron lifetime spectroscopy, we have developed a new positron pulsing system. In the new system, slow positron beam bunching is performed by applying an induction cavity instead of a usual rf cavity. The induction cavity makes it possible to produce any kind of electric field change according to time. Hence the bunching efficiency of the induction cavity should be higher than that of rf cavity which can produce only sine curves electric field change according to time. In a preliminary slow positron beam bunching test using the induction cavity, a pulse width of about 300 ps has been achieved. A fine tuning for achieving a pulse width of 150 ps is in progress. Another new compact cyclotron and a new slow positron beam facility have also been constructed next to the present ones. The design of the new facility will be also reported.

AB - A new positron pulsing system has been developed for the first time using an induction cavity. The slow positron beam is provided by using a compact cyclotron. In order to use the slow positron beam from the compact cyclotron for the analyses of material surfaces such as variable-energy positron lifetime spectroscopy, we have developed a new positron pulsing system. In the new system, slow positron beam bunching is performed by applying an induction cavity instead of a usual rf cavity. The induction cavity makes it possible to produce any kind of electric field change according to time. Hence the bunching efficiency of the induction cavity should be higher than that of rf cavity which can produce only sine curves electric field change according to time. In a preliminary slow positron beam bunching test using the induction cavity, a pulse width of about 300 ps has been achieved. A fine tuning for achieving a pulse width of 150 ps is in progress. Another new compact cyclotron and a new slow positron beam facility have also been constructed next to the present ones. The design of the new facility will be also reported.

KW - Cyclotron

KW - Induction Cavity

KW - Positron Pulsing System

KW - Slow Positron Beam

KW - Slow Positron Beam Bunching

KW - Variable-Energy Positron Lifetime Spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=5244265197&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5244265197&partnerID=8YFLogxK

M3 - Article

VL - 255-257

SP - 674

EP - 676

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

ER -