scholarly journals Development of a laser ion source for a four-beam interdigital-H type radio frequency quadrupole linac

2018 ◽  
Author(s):  
Shota Ikeda ◽  
Tatsuya Hosokai ◽  
Noriyosu Hayashizaki
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Laser Ion Source ◽  
Radio Frequency Quadrupole

scholarly journals The CERN laser–ion source

1996 ◽  
Vol 14 (3) ◽  
pp. 283-292 ◽  
Author(s):  
J. Collier ◽  
G. Hall ◽  
H. Haseroth ◽  
H. Kugler ◽  
A. Kuttenberger ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Feasibility Study ◽  
Heavy Ion ◽  
Ion Beams ◽  
Ion Source ◽  
Laser Ion Source ◽  
Radio Frequency Quadrupole ◽  
Laser Produced Plasma ◽  
Light Ions ◽  
First Results

This paper describes the first results of a feasibility study undertaken at CERN to determine whether a laser-produced plasma can be used as a source of intense highly charged heavy ion beams. A variety of important measurements have been made, and the results are encouraging. Furthermore, a beam of highly charged light ions produced by the laser ion source has been accelerated successfully in a radio frequency quadrupole (RFQ) structure.

Laser ion source: A direct plasma injection scheme for two-beam type interdigital-H radio frequency quadrupole linac

2010 ◽  
Vol 81 (2) ◽  
pp. 02A502 ◽  
Author(s):  
T. Ishibashi ◽  
N. Hayashizaki ◽  
J. Tamura ◽  
K. Oka ◽  
Y. Shimaya ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Laser Ion Source ◽  
Radio Frequency Quadrupole ◽  
Injection Scheme ◽  
Plasma Injection ◽  
Beam Type

scholarly journals Scheme for direct plasma injection into an RFQ linac

2002 ◽  
Vol 20 (3) ◽  
pp. 451-454 ◽  
Author(s):  
M. OKAMURA ◽  
T. KATAYAMA ◽  
R.A. JAMESON ◽  
T. TAKEUCHI ◽  
T. HATTORI ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Laser Plasma ◽  
Ion Source ◽  
Laser Ion Source ◽  
Injection Method ◽  
Injection Scheme ◽  
Plasma Injection

A new efficient injection method from a laser ion source to a Radio Frequency Quadropole (RFQ) was proposed and is being tested in RIKEN, Japan. A laser plasma is induced just before the entrance of the RFQ and is injected directly into the RFQ channel. Using an existing RFQ, first verification tests have been completed successfully. Finally, the preliminary specifications for the first RFQ dedicated to the new injection scheme are presented.

scholarly journals Development of the radio frequency quadrupole proton linac for ESS-Bilbao

2020 ◽  
Vol 231 ◽  
pp. 02001
Author(s):  
Juan Luis Muñoz ◽  
Ibon Bustinduy ◽  
Igor Rueda ◽  
David de Cos
Keyword(s):  
Radio Frequency ◽  
Frequency Tuning ◽  
Mechanical Design ◽  
Design Procedure ◽  
Ion Source ◽  
Beam Dynamics ◽  
Radio Frequency Quadrupole ◽  
Electromagnetic Design ◽  
Rf Cavity ◽  
Cavity Design

The Radio Frequency Quadrupole (RFQ) linear accelerator for ESS-Bilbao is described. This device will complete ESS-Bilbao injection chain after the ion source and the LEBT. The design was finished in 2015 and machining of the accelerator cavity started in 2016. The RFQ is a 4-vane structure, aimed to accelerate protons from 45 keV to 3:0MeV and operating at 352:2MHz in pulsed mode with a duty cycle up to 10%. Total length is about 3:1m divided in 4 segments. Each segment is itself assembled from four components, named vanes, by using polymeric vacuum gaskets with no brazing among them. Notable aspects of the design are the constant mean aperture R0, vane radius ρ and thus ρ/R0 ratio and also uniform inter vane voltage. Novel procedures for the design of the modulation and integrated beam dynamics and electromagnetic design have been developed for this task. In this paper, the complete design procedure and its results are presented, including beam dynamics, RF cavity design, field flatness and frequency tuning, cooling and thermo-mechanical design.

Beam commissioning and analysis of a continuous-wave window-type deuteron radio-frequency quadrupole

2020 ◽  
Vol 29 (02) ◽  
pp. 1950111
Author(s):  
Qiuyun Tan ◽  
Kun Zhu ◽  
Pingping Gan ◽  
Qi Fu ◽  
Haipeng Li ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Continuous Wave ◽  
Ion Beam ◽  
Radiation Risk ◽  
Deuteron Beam ◽  
Ion Source ◽  
Advanced Technology ◽  
High Current ◽  
Radio Frequency Quadrupole ◽  
Beam Commissioning

As high-intensity beams are required for various applications, high-power, high-current, continuous-wave (CW) radio-frequency quadrupole (RFQ) accelerators have become a research focus in recent years and also a direction for development in the future. To master and accumulate the advanced technology in design, fabrication and operation of high-current CW RFQs, the RFQ group at Peking University has built a window-type CW RFQ, operating at 162.5[Formula: see text]MHz, to accelerate a 50-mA deuteron beam from 50[Formula: see text]keV to 1[Formula: see text]MeV. It is the first relatively high-frequency window-type CW RFQ in the world. A [Formula: see text] ion beam extracted from an electron cyclotron resonance (ECR) ion source was used for the beam commissioning because deuteron beam acceleration will produce a serious radiation risk. We compared and analyzed the measurement results obtained during the beam commissioning with simulations. The data show good consistency in many respects. For the discrepancies, we explain the issues in detail. We achieved stable and robust acceleration of about 1.5[Formula: see text]mA CW [Formula: see text] for 1[Formula: see text]h. Finally, we discuss the differences between [Formula: see text] ion beam acceleration and deuteron beam acceleration.

scholarly journals Development of a radio-frequency quadrupole cooler for high beam currents

2017 ◽  
Vol 20 (12) ◽  
Author(s):  
Ramzi Boussaid ◽  
G. Ban ◽  
G. Quéméner ◽  
Y. Merrer ◽  
J. Lorry
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Quadrupole ◽  
High Beam ◽  
Beam Currents

A Band Rejection Filter of High Current Radio Frequency Ion Source for Neutral Beam Injector

2021 ◽  
pp. 1-6
Author(s):  
Wei Liu ◽  
Qinglong Cui ◽  
Sheng Liu ◽  
Lizhen Liang ◽  
Yuanzhe Zhao ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Ion Source ◽  
Neutral Beam ◽  
High Current ◽  
Neutral Beam Injector ◽  
Rejection Filter
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