A5062172009- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Gyrotron and Vacuum Electronics Research
- Nuclear physics research studies
- Ion-surface interactions and analysis
- Muon and positron interactions and applications
- Solar and Space Plasma Dynamics
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Integrated Circuits and Semiconductor Failure Analysis
- Mass Spectrometry Techniques and Applications
- Astro and Planetary Science
- Vacuum and Plasma Arcs
- Radiation Effects in Electronics
- Electrostatic Discharge in Electronics
- Electric Motor Design and Analysis
- Engineering Applied Research
- Radiation Detection and Scintillator Technologies
- Electron and X-Ray Spectroscopy Techniques
- Spacecraft and Cryogenic Technologies
Michigan State University
2006-2024
National Superconducting Cyclotron Laboratory
2002-2019
Financial Research Institute of the Ministry of Finance of the Russian Federation
2015
Argonne National Laboratory
2014
Facility for Rare Isotope Beams
1999-2013
Studieförbundet Näringsliv och Samhälle
2010
Niowave (United States)
2008-2009
Thomas Jefferson National Accelerator Facility
2008
Goethe University Frankfurt
2008
Istituto Nazionale di Fisica Nucleare, Laboratori Acceleratori e Superconduttività Applicata
2008
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...
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,...
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...
AS pointed out in a number of recent papers,1,2 mercury-arc rectifier draws distorted current from the a-c supply system, even though power to system is supplied by sine-wave source. The harmonics wave react on cause distortion voltage wave, degree being function rating rectifier, phases which anodes, impedance at harmonic frequencies and load. It well known that, theory least, reductions wave-shape may be effected increasing thus reducing components present supply-circuit current.1,2 Up...
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...
The Coupled Cyclotron Facility at Michigan State University is being completed with the experimental program scheduled to start in July 2001. Beam from either recently room temperature ECR or existing superconducting injected axially into refurbished K500 cyclotron, sent K1200 cyclotron via a new beam line along median plane and stripped by carbon foil located inside dee for injection. First through paired cyclotrons was obtained on 10 October 2000.
Studies of the longitudinal beam dynamics in small isochronous ring (SIR) at Michigan State University revealed a fast, space-charge driven instability that did not fit model negative mass instability. The observed behavior can be explained by transverse horizontal component coherent force and its effect on motion. This effectively modifies slip factor, shifting point enhancing paper presents results numerical experimental studies SIR proposes simple analytical explaining these results.
Charge strippers play a critical role in many high intensity heavy ion accelerators. Here we present some history of recent stripper technology development and indicate the capabilities limitations various approaches. The properties solid, gaseous, liquid are covered. In particular, solid for intensity, atomic number ions unique features helium gas lithium applications need quality simulation performance as important input system optimization is explained examples current codes given.
view Abstract Citations (37) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Transfer of line radiation in differentially expanding atmospheres. V. Line formation a decelerating spherical flow. Marti, F. ; Noerdlinger, P. D. Radiative transfer and resonance-line expanding, stellar atmospheres are analyzed the supersonic approximation, taking geometry into account assuming complete redistribution over profile fluid frame. The influence...
Linac segment 1 (LS1) of the FRIB driver linac is composed 15 cryomodules, consisting 104 superconducting (SC) resonators and 39 SC solenoids. Four ion beam species (Ne, Ar, Kr, Xe) were successfully accelerated up to 20.3 MeV/u in LS1 transported designated dumps located folding (FS1). 100% transmission was measured through all cryomodules warm section LS1. High-power equivalent beams delivered dump two modes: pulsed continuous wave (cw). In mode, peak intensity argon 14.8 pμA at 3% duty...
Reacceleration of low-energy rare isotope beams available from gas stopping fast-fragment or an ISOL target station to energies in the range 0.3-12 MeV/nucleon is needed for experiments such as Coulomb excitation and transfer reaction studies precise study astrophysical reactions. The implementation charge breeding a first step reaccelerator key obtaining compact cost-efficient reacceleration scheme. For highest efficiency it essential that single states are obtained short time. A...
A new electron cyclotron resonance ion source (ECRIS) was constructed at the NSCL/MSU to replace existing SC-ECRIS. This ECRIS operates 18+14.5 GHz microwave frequencies with a planned upgrade 24-28 in second phase of commissioning. superconducting hexapole coil system produce radial magnetic field; axial trapping is produced six solenoid coils enclosed an iron yoke allow optimization distance between plasma electrode and resonant zone plasma. We report details design, construction, initial...
A status report of the design and fabrication a new, fully superconducting electron cyclotron resonance ion source will be presented. The Superconducting Source for Ions (SuSI) first operate at 18+14.5GHz microwave frequencies. short description magnet structure injection extraction hardware Several innovative solutions are described, which allow maximum flexibility in tuning SuSI order to match acceptance coupled cyclotrons. Details an ultrahigh temperature inductive oven construction given...
A medical superconducting cyclotron, the first such project to be undertaken, is under construction. The cyclotron will used produce neutron beams for use in radiation treatment of cancer. purpose administer lethal doses tumor cells while minimizing dose normal tissue; rather intense are required treatments occur a reasonably expeditious time and device needs able fire neutrons at patient from any angle. authors briefly review rationale then describe design with special emphasis on details...
A compact superconducting cyclotron is being constructed for use as a neutron based cancer therapy facility in major Detroit hospital . The project involves number of novel design solutions which are described the paper.
Superconducting radio frequency (SRF) cavities used in present-day accelerators for the acceleration of charged particles near speed light are based on axially symmetric TM010 mode a pillbox cavity. Future such as Linear Collider require high accelerating gradients to limit length linac. Two techniques improve gradient being explored: cavity that is half reentrant electromagnetic characteristics, and improved heat transfer via cooling channels surface modification at helium interface. These...