Overview of Beam Diagnostic Systems for FRIB

2018

With an average beam power two orders of magnitude higher than operating heavy-ion facilities, the Facility for Rare Isotope Beams (FRIB) stands at the power frontier of the accelerator family. This paper summarizes the status of design, technology development, construction, commissioning, as well as path to operations and upgrades. We highlight beam instrumentation challenges including machine protection of high-power heavy-ion beams and complications of multi-charge-state and multi-ion-species accelerations.

The DAFNE Beam Test Facility (BTF), initially optimized to produce single electrons and positrons in the 25-750 MeV energy range, can now provide beam in a wider range of intensity up to 10 10 electrons/pulse. The facility has been also equipped with a system for the production of tagged photons, and the possibility of photo-production of neutrons is under study. Different diagnostic tools have been developed and are available for high-energy physics and accelerator communities for testing beam monitor devices and for all studies of particles detectors performances. The facility diagnostic devices are here presented: the main characteristics and operation are described, as well as the performances and the experience of the experimental groups collected during these years.

This introductory course gives an overview of why diagnostics equipment is crucial for running accelerator facilities. Even if significant progress has been made over the last two decades in terms of designing and modelling an accel- erator, model and reality differ all the time. The commissioning stages of a synchrotron light source and the stability of the beam positions are taken as examples. The main orbit disturbances are driven by alignment errors, drifts with temperature, vibrations, timing system jitters. Reaching a high level of stability and beam availability in facilities is very challenging. This is attained by driving forward the equipment performance. This starts off with the design of the building and the girders supporting the equipment, the optimization of magnets, the stability and precisionof the power supply, the diagnostics elec- tronics, and the careful design of the beamlines. In addition, passive and active corrections have to be devised to maintain the highl...

accelconf.web.cern.ch

In order to perform imaging, profiling and identification of low intensity (I beam <10 5 pps) Radioactive Ion Beams (RIB), we have developed a series of diagnostics devices, operating in a range of beam energy from 50 keV up to 8 MeV/A. These characteristics do them especially suitable for ISOL RIB facilities.

arXiv (Cornell University), 2014

During the recent years of LHC operation, we analysed the situation of beam instrumentation and the need to optimize it for beam-beam studies. The most important beam instrumentation devices will be highlighted and modifications or optimizations will be suggested. A complete wish list will be presented to make sure we will be ready after LS1 (Long Shutdown 1) to study the beambeam effect in a more complete way.

Journal of Instrumentation, 2017

Laser-accelerated ion beams could represent the future of particle acceleration in several multidisciplinary applications, as for instance medical physics, hadrontherapy and imaging field, being a concrete alternative to old paradigm of acceleration, characterized by huge and complex machines. In this framework, following on from the ELIMED collaboration, launched in 2012 between INFN-LNS and ELI-Beamlines, in 2014 a three-years contract has been signed between the two institutions for the design and the development of a complete transport beam-line for high-energy ion beams (up to 60 MeV) coupled with innovative diagnostics and in-air dosimetry devices. The beam-line will be installed at the ELI-Beamlines facility and will be available for users. The measurement of the beam characteristics, such as energy spectra, angular distributions and dose-rate is mandatory to optimize the transport as well as the beam delivery at the irradiation point. In order to achieve this purpose, the development of appropriate on-line diagnostics devices capable to detect high-pulsed beams with high accuracy, represents a crucial point in the ELIMED beamline development. The diagnostics solution, based on the use of silicon carbide (SiC) and diamond detectors using TOF technique, will be presented together with the preliminary results obtained with laser-accelerated proton beams. K : high energy laser-driven protons; Diagnostics; Time Of Flight.

2018

This paper presents recent developments of accelerator physics related topics for the Facility for Rare Isotope Beams (FRIB) being built at Michigan State University [1]. While extensive beam dynamics simulations including all known errors do not show uncontrolled beam losses in the linac, ion beam contaminants extracted from the Electron Cyclotron Resonance (ECR) ion source (ECRIS) together with main ion beam can produce significant losses after the charge stripper. These studies resulted in development of beam collimation system at relatively low energy of 16 MeV/u and room temperature bunchers instead of originally planned superconducting ones. Commissioning of the Front End enabled detailed beam physics studies accompanied with the simulations using several beam dynamics codes. Settings of beam optics devices from the ECRIS to Medium Energy Beam Transport (MEBT) have been developed and applied to meet important project milestones. Similar work is planned for the beam commissioni...

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2002

The need of diagnostic tools for low energy-low intensity beams has lead us to the development of a series of suitable devices, in order to perform imaging, profiling and identification of ion beams, with particular care for the EXCYT radioactive beams. The peculiarities of these devices are compactness, handiness and good performance for very low intensity beams (I beam o10 5 particles/s), in a range of energy from 50 keV up to 8 MeV/A. r 0168-9002/02/$ -see front matter r 2002 Elsevier Science B.V. All rights reserved. PII: S 0 1 6 8 -9 0 0 2 ( 0 1 ) 0 0 9 2 1 -4

2011

Precise determination of beam intensity is important for any accelerator facility. At FAIR, the Facility for Antiproton and Ion Research presently in the planning phase at GSI, the requirements set by beam intensities in the various accelerators, storage rings and transport lines differ significantly. A set of beam diagnostic instruments is foreseen to detect the large variety of ion beams ranging from less than 10 4 antiprotons up to high intensity of 510 11 uranium ions. This contribution presents an overview of destined current measurement devices, both intercepting, like scintillators, ionization chambers or secondary electron monitors, and non-intercepting current-transformer type devices. Ongoing developments are discussed for non-intercepting devices, i.e. a DC current transformer with large dynamic range and a cryogenic current comparator, purpose-built for the detection of lowest beam intensities at FAIR. LAYOUT AND REQUIREMENTS OF FAIR