A5056946253- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Superconducting Materials and Applications
- Plasma Diagnostics and Applications
- CCD and CMOS Imaging Sensors
- Photocathodes and Microchannel Plates
- Laser-Plasma Interactions and Diagnostics
- Magnetic confinement fusion research
- Diamond and Carbon-based Materials Research
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Laser Design and Applications
- Radiation Effects in Electronics
- Atomic and Molecular Physics
- Pulsed Power Technology Applications
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Vacuum and Plasma Arcs
- History and Developments in Astronomy
- Gyrotron and Vacuum Electronics Research
- Dark Matter and Cosmic Phenomena
- Radiation Therapy and Dosimetry
Brookhaven National Laboratory
1998-2024
Lawrence Berkeley National Laboratory
2003
Wayne State University
1997
Cooling of beams gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens possibility this technique higher energies than possible electrostatic acceleration beams. The challenges include generation suitable for cooling, delivery required quality to cooling sections without degradation beam angular divergence energy spread,...
Abstract At Brookhaven National Laboratory (BNL), the LION2 ion source is being constructed to replace an existing laser ablation (LIS) at EBIS facility, which provides heavy beams of multiple species for operation NASA Space Radiation (NSRL) and Relativistic Heavy Ion Collider (RHIC). The LION1 currently singly charged ions Li, B, C, O, Al, Si, Ca, Ti, Fe, Cu, Zr, Nb, Ag, Tb, Ta, W, Au, Bi, Th with a rapid-species-change capability. An electron beam source, Extended-EBIS captures, confines,...
The Low Energy RHIC electron Cooling (LEReC) project at Brookhaven National Laboratory recently demonstrated for the first time cooling of hadron bunches with radio-frequency (rf) accelerated bunches. LEReC uses a high-voltage photoemission gun stringent requirements beam current, quality, and stability. has photocathode high-power fiber laser, novel cathode production, transport, exchange system. It been that can continually produce high-current quality suitable cooling. We describe...
The LION source is a new laser ion (LIS), which was installed and commissioned at Brookhaven National Laboratory (BNL) for low charge state heavy production as an external of primary ions RHIC-EBIS. This the first LIS to be combined with Electron Beam Ion Source type long term user operation. After short commissioning, started provide various species NASA Space Radiation (NSRL) since March, 2014, Gold beam has been provided RHIC June, 2014.
A novel robotic plasma magnetron mole with a 50 cm long cathode was designed, fabricated, and operated. The reason for this endeavor is to alleviate the problems of unacceptable resistive heating stainless steel vacuum tubes in BNL Relativistic Heavy Ion Collider (RHIC). successfully operated copper coat an assembly containing full-size, steel, cold bore, RHIC magnet tubing connected two types bellows, which additional pipes made were connected. To increase lifetime, movable package...
A non-intercepting beam profile monitor for H/sup -/ beams is being developed at Brookhaven National Lab. An ion has a first ionization potential of 0.75eV. Electrons can be removed from an by passing light near infrared laser through it. Experiments have been performed on the BNL linac to measure transverse 750keV using Nd:YAG photoneutralize narrow slices beam. The scanned across neutralizing portion struck laser. electrons are and current notch measured.
A 45/spl times/45 mm rectangular n-type silicon drift detector was studied in magnetic fields ranging from 0 to 4.7 T and for 200 380 V/cm. Transport properties of electrons (Hall mobility, mobility magnetoresistance) were determined by pulsing the with a Nd:YAG laser at different lengths measuring both transverse deflections signal increases time versus applied field. The width anode direction increased field aligned parallel normal direction. found operate well conditions expected future...
Devices and techniques that can, via physical vapor deposition, coat various surface contours or very long small aperture pipes, are described. Recently, a magnetron mole was developed in order to in-situ accelerator tube sections of the Brookhaven National Lab relativistic heavy ion collider have 7.1 cm diameter with access points 500 m apart, for copper vacuum alleviate problems unacceptable ohmic heating electron clouds. A 50 cathode designed fabricated successfully operated whole...
The BNL SRF gun cavity operated well in CW mode up to 2 MV. However, its performance suffered due multipacting the quarter-wavelength choke joint. A new multipacting-free cathode stalk was designed and conditioned. This paper describes RF thermal design of conditioning results.
A 63/spl times/63mm rectangular silicon drift detector was irradiated using a /sup 60/Co source and its performance studied. The total accumulated dose 23.5 krad. after room temperature annealing found to be sufficiently radiation hard for RHIC applications.