Bunching and chopping for tandem accelerators. Part II: Chopping

Nikolai R. Lobanov; Peter Linardakis; Daniel Tempra

doi:10.1016/j.nimb.2021.02.014

Bunching and chopping for tandem accelerators. Part II: Chopping

Nikolai R. Lobanov^*, Peter Linardakis, Daniel Tempra

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

A chopping system of a tandem accelerator based on two pairs of parallel plates is investigated. The first chopper operating at 37.5 MHz cuts off the tails of the bunched beam and the second, at a lower frequency of 4.6875 MHz, eliminates the satellite low intensity pulses. The experimental procedures for measurement of the performance of a chopping system including a Beam Profile Monitor (BPM) technique and a pulsed beam diagnostic monitor are described. The results of simulations and experimental observations are presented. An analytical technique to reconstruct the real profile of deflected beams from the profile measured with a BPM is discussed in detail. Theoretical and experimental data on the chopper scanning window are presented. An analyses of the factors limiting the chopping system performance is conducted and technical solutions to overcome it are discussed.

Original language	English
Pages (from-to)	142-147
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	499
DOIs	https://doi.org/10.1016/j.nimb.2021.02.014
Publication status	Published - 15 Jul 2021

Access to Document

10.1016/j.nimb.2021.02.014

Cite this

@article{02c8af704bd043f6922f17b038f020d8,

title = "Bunching and chopping for tandem accelerators. Part II: Chopping",

abstract = "A chopping system of a tandem accelerator based on two pairs of parallel plates is investigated. The first chopper operating at 37.5 MHz cuts off the tails of the bunched beam and the second, at a lower frequency of 4.6875 MHz, eliminates the satellite low intensity pulses. The experimental procedures for measurement of the performance of a chopping system including a Beam Profile Monitor (BPM) technique and a pulsed beam diagnostic monitor are described. The results of simulations and experimental observations are presented. An analytical technique to reconstruct the real profile of deflected beams from the profile measured with a BPM is discussed in detail. Theoretical and experimental data on the chopper scanning window are presented. An analyses of the factors limiting the chopping system performance is conducted and technical solutions to overcome it are discussed.",

keywords = "Beam chopping, Longitudinal phase space, Tandem accelerator",

author = "Lobanov, {Nikolai R.} and Peter Linardakis and Daniel Tempra",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = jul,

day = "15",

doi = "10.1016/j.nimb.2021.02.014",

language = "English",

volume = "499",

pages = "142--147",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Bunching and chopping for tandem accelerators. Part II

T2 - Chopping

AU - Lobanov, Nikolai R.

AU - Linardakis, Peter

AU - Tempra, Daniel

PY - 2021/7/15

Y1 - 2021/7/15

N2 - A chopping system of a tandem accelerator based on two pairs of parallel plates is investigated. The first chopper operating at 37.5 MHz cuts off the tails of the bunched beam and the second, at a lower frequency of 4.6875 MHz, eliminates the satellite low intensity pulses. The experimental procedures for measurement of the performance of a chopping system including a Beam Profile Monitor (BPM) technique and a pulsed beam diagnostic monitor are described. The results of simulations and experimental observations are presented. An analytical technique to reconstruct the real profile of deflected beams from the profile measured with a BPM is discussed in detail. Theoretical and experimental data on the chopper scanning window are presented. An analyses of the factors limiting the chopping system performance is conducted and technical solutions to overcome it are discussed.

AB - A chopping system of a tandem accelerator based on two pairs of parallel plates is investigated. The first chopper operating at 37.5 MHz cuts off the tails of the bunched beam and the second, at a lower frequency of 4.6875 MHz, eliminates the satellite low intensity pulses. The experimental procedures for measurement of the performance of a chopping system including a Beam Profile Monitor (BPM) technique and a pulsed beam diagnostic monitor are described. The results of simulations and experimental observations are presented. An analytical technique to reconstruct the real profile of deflected beams from the profile measured with a BPM is discussed in detail. Theoretical and experimental data on the chopper scanning window are presented. An analyses of the factors limiting the chopping system performance is conducted and technical solutions to overcome it are discussed.

KW - Beam chopping

KW - Longitudinal phase space

KW - Tandem accelerator

UR - http://www.scopus.com/inward/record.url?scp=85106356214&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2021.02.014

DO - 10.1016/j.nimb.2021.02.014

M3 - Article

SN - 0168-583X

VL - 499

SP - 142

EP - 147

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Bunching and chopping for tandem accelerators. Part II: Chopping

Abstract

Access to Document

Other files and links

Fingerprint

Cite this