A5052612019- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Gyrotron and Vacuum Electronics Research
- Plasma Diagnostics and Applications
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Nuclear physics research studies
- Ion-surface interactions and analysis
- Radiation Effects in Electronics
- Atomic and Molecular Physics
- Radiation Therapy and Dosimetry
- Pulsed Power Technology Applications
- Electrostatic Discharge in Electronics
- Electron and X-Ray Spectroscopy Techniques
- Fusion materials and technologies
- Particle physics theoretical and experimental studies
- Energy Harvesting in Wireless Networks
- Laser-Plasma Interactions and Diagnostics
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Advanced Data Storage Technologies
- Physics of Superconductivity and Magnetism
Michigan State University
2017-2024
Facility for Rare Isotope Beams
2022-2023
Thomas Jefferson National Accelerator Facility
2022
Argonne National Laboratory
2009-2018
National Superconducting Cyclotron Laboratory
2018
Universidad de Huelva
2016
Hospital Juan Ramón Jiménez
2016
University of Groningen
2016
Institut des Sciences des Plantes de Paris Saclay
2016
Northern Illinois University
2015
Advances in machine learning methods provide tools that have broad applicability scientific research. These techniques are being applied across the diversity of nuclear physics research topics, leading to advances will facilitate discoveries and societal applications. This Review gives a snapshot which has been transformed by techniques.
Less than a year after its opening, the Facility for Rare Isotope Beams produced five never-before-seen isotopes observation, success that researchers say highlights discovery potential of facility.
In 2008, Michigan State University was selected to establish the Facility for Rare Isotope Beams (FRIB). Construction of FRIB accelerator completed in January 2022. Phased commissioning with heavy ion beams started 2017 normal-conducting source and radio-frequency quadrupole. April 2021, full driver linear (linac) commissioned, accelerated energies above 200 MeV/nucleon by 324 superconducting radiofrequency (SRF) resonators operating at 2 K 4 liquid-helium cooling. preparation high-power...
This report presents a brief summary of the science opportunities and program polarized medium energy electron-ion collider at Jefferson Lab comprehensive description conceptual design such based on CEBAF electron accelerator facility.
The front end of any modern ion accelerator includes a radio frequency quadrupole (RFQ). While many pulsed linacs successfully operate RFQs, several accelerators worldwide have significant difficulties operating continuous wave (CW) RFQs to design specifications. In this paper we describe the development and results beam commissioning CW RFQ designed built for National User Facility: Argonne Tandem Linac Accelerator System (ATLAS). Several innovative ideas were implemented in RFQ. By...
Abstract The Facility for Rare Isotope Beams (FRIB) began operation with 1 kW beam power scientific users in May 2022 upon completion of 8 years project construction. ramp-up to the ultimate 400 kW, planned over a 6-year period, will enable facility reach its full potential discovery isotope science and applications. In December 2023, record-high 10.4 uranium was delivered target. Technological developments accelerator improvements are being made entire key ramp-up. Major technological...
The Facility for Rare Isotope Beams (FRIB) Project has entered the phase of beam commissioning starting from room-temperature front end and superconducting linac segment first 15 cryomodules. With newly commissioned helium refrigeration system supplying 4.5[Formula: see text]K liquid to quarter-wave resonators solenoids, FRIB accelerator team achieved sectional key performance parameters as designed ahead schedule accelerating heavy ion beams above 20[Formula: text]MeV/u energy. Thus,...
Superconducting cavities presently used for acceleration of ions in velocity range $\ensuremath{\sim}0.01c$ to $0.3c$ (where $c$ is the speed light) are based on quarter-wave resonators. Currently there several design proposals nuclear physics laboratories application this type cavity light and heavy ions. The operating frequencies from $\ensuremath{\sim}50$ 360 MHz satisfy various specifications. Electrodynamics studies field distributions beam-cavity interaction area indicate appreciable...
The new ray-tracing code TRACK originally developed to fulfill the special requirements of RIA accelerator systems is a general beam dynamics code. It currently being used for design and simulation future proton heavy-ion linacs at several Labs. This paper presents description emphasizing its main features recent updates.
Abstract The Facility for Rare Isotope Beams (FRIB), a major nuclear physics facility research with fast, stopped and reaccelerated rare isotope beams, started operation in May 2022. Since then, dozen experiments have been successfully accomplished. Typically, the beams last week or two. Each experiment requires different primary beam species energies. Shortening accelerator fragment separator setup time is critical to meet demands of FRIB Users community. Currently, focus linac reducing...
The applicability of superconducting TEM-class spoke cavities to high-energy ion linacs is discussed, and detailed designs for two TEM-class, triple-spoke-loaded niobium resonant are presented. 345 MHz have a velocity range $0.4<\ensuremath{\beta}<0.75$ beam aperture 4 cm. Spoke-loaded offer several advantages compared with the higher-frequency elliptical-cell that currently being developed this particle velocities. proposed triple-spoke can provide broader acceptance, more accelerating...
The proposed 8 GeV proton driver (PD) linac at FNAL is based on 436 independently phased superconducting (SC) resonators (Foster and MacLachlan 2002 Proc. LINAC-2002 p 826). includes a front end up to ∼420 MeV high energy section operating 325 1300 MHz respectively. A room temperature (RT) radio frequency quadrupole (RFQ) short H-type are for the initial acceleration of H-minus or beam 10 MeV. From voltage gain provided by SC spoke-loaded cavities. In high-energy section, International...
For high-power heavy ion accelerators, the development of a suitable charge stripper, which can handle intense beams, is essential. This Letter describes first experimental demonstration liquid lithium stripper. A 10-20 μm thick jet flowing at >50 m/s was formed and confirmed stable when bombarded by various while increasing state incoming beams to desired range. proved existing power limitation with conventional strippers be overcome liquid-metal opening completely new possibilities in...
An advanced facility for the production of nuclei far from stability could be based on a high-power driver accelerator providing ion beams over full mass range protons to uranium. A beam power several hundred kilowatts is highly desirable this application. At present, however, available heavier ions would limited by source capabilities. simple and cost-effective method enhance current accelerate multiple charge states through superconducting linac. This paper presents results numerical...
The proposed Rare Isotope Accelerator (RIA) Facility, an innovative exotic-beam facility for the production of high-quality beams short-lived isotopes, consists a fully superconducting 1.4 GV driver linac and 140 MV postaccelerator. To produce sufficient intensities secondary will provide 400 kW primary any ion from hydrogen to uranium. Because high intensity beam losses must be minimized avoid radioactivation accelerator equipment. keep power deposited by particles lost on structures below...
Iron-dominated superconducting magnets are one of the most popular and used design choices for magnetic quadrupoles accelerator systems. While iron yoke pole tips economic effective in shaping field, large amount also leads to certain drawbacks, namely, unwanted harmonics from sextupole correctors nested inside quadrupole tips. Additional problems include cryogenic challenges being part cold mass, mechanical mounting octupole. The Facility Rare Isotope Beams (FRIB) plans implement a...
The possibility of simultaneously accelerating particles with a range charge-to-mass ratios ( approximately 20%) to the same energy is proposed and demonstrated for superconducting linac. Uranium ions stripped in foil eight charge states have been accelerated through portion ATLAS linac from 286 690 MeV, 94% injected uranium beam. Emittance resultant beam has measured spread was 1.3% compared 0.4% single state. This development immediate application high-intensity acceleration heavy that are...
A multi-MW proton facility, Project X has been proposed and is currently under development at Fermilab. As part of this program, we are constructing a prototype the front end linac The construction successful operations facility will validate concept for end, thereby minimizing primary technical risk element within Project. Injector Experiment (PXIE) can be constructed over period FY12-16 include an H- ion source, CW 2.1-MeV RFQ two SC cryomodules providing up to 30 MeV energy gain average...
We have developed a new design for 176 MHz cw radio-frequency quadrupole (RFQ) the SARAF upgrade project. At this frequency, proposed is conventional four-vane structure. The main goals are to provide highest possible shunt impedance while limiting required rf power about 120 kW reliable operation, and length 4 meters. If built as designed, RFQ will be first single cavity (no resonant coupling required) that does not require $\ensuremath{\pi}$-mode stabilizing loops or dipole rods. For this,...
The Facility for Rare Isotope Beams (FRIB) is a major nuclear physics facility research with fast, stopped, and reaccelerated beams that was successfully commissioned in May 2022. A key capability of FRIB the production an acceleration uranium beam, but this requires to work at design limits lowest charge-to-mass ratio highest power density on beam intercepting devices. This paper presents techniques overcoming significant challenges accelerating culminating demonstration 10.4 kW target,...
The nuclear science community considers the construction of Rare Isotope Accelerator (RIA) facility as a top priority. RIA includes 1.4 GV superconducting linac for production 400 kW cw heavy ion beams. initial acceleration ions delivered from an electron cyclotron resonance source can be effectively performed by 57.5 MHz 4-m long room temperature RFQ. principal specifications RFQ are (i) formation extremely low longitudinal emittance, (ii) stable operation over wide range voltage various...