Sep 20 – 24, 2021
America/Vancouver timezone

CERN’s IS03 H- Source Beam Formations Studies

Not scheduled
20m
Poster Negative ion sources Poster Session 2

Speaker

Jacques Lettry (CERN)

Description

CERN’s H- Ion source is being operated at the new 160 MeV linear injector of CERN’s accelerator complex. The source’s plasma is of the RF-ICP type without magnetic cusp and runs under Cs-loss compensations. Filter- and e-dump magnetic fields generate a horizontal asymmetry. The H- beam is generated via volume and caesiated plasma surface modes, the latter inducing a radial current density asymmetry close to the plasma electrode. Asymmetries affecting the meniscus shape, or its current density can be simulated via 3D PIC-MC such the Orsay Negative Ion eXtraction code (ONIX). Validation of simulations requires Optical and Beam Emission Spectroscopy, emittance and profile measurements. The data can be compared to PIC-MC plasma parameters and beam form PIC-MC simulations coupled to beam transport codes, i.e. IBSimu. The parameter space covers RF-power, neutral’s density, position of the RF coil and extraction field. Beams of H-, D- and protons were produced.

E-mail for contact person jacques.lettry@cern.ch

Primary author

Co-authors

Adrien Revel Alessandro Mimo (Max-Planck-Institut für Plasmaphysik) Andrew Hurlbatt (Max-Planck-Gesellschaft (DE)) Anna Vnuchenko (CERN) Benoit Riffaud (CERN) Benoit Teissandier (CERN) Christophe Vuitton (CERN) Colette Charvet (CERN) Cristiano Mastrostefano (CERN) Didier Steyaert (CERN) Dirk Wünderlich (IPP Garching) Federico Roncarolo (CERN) Francesco Di Lorenzo (CERN) Julien Thiboud (CERN) Kacper Jerzy Kapusniak (CERN) Max Lindqvist (Keio University (JP)) Michael O'Neil (CERN) Michel Duraffourg (CERN) Nicolaas Den Harder (Max-Planck-Gesellschaft (DE)) Pierre Moyret (CERN) Roberto Guida (CERN) Sebastien Bertolo (CERN) Serhiy Mochalskyy (Max-Planck Institut für Plasmaphysik, Garching) Stefan Briefi (Universitaet Augsburg (DE)) Stephane Bart Pedersen (CERN) Taneli Kalvas (University of Jyvaskyla) Tiberiu Minea (Université Paris-Saclay) Ursel Fantz (Max-Planck-Institut for Plasma Physics) Yannick Maxime Coutron

Presentation materials