A5031508597- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Particle Detector Development and Performance
- Radiation Therapy and Dosimetry
- Energy Harvesting in Wireless Networks
- Particle physics theoretical and experimental studies
- Electron and X-Ray Spectroscopy Techniques
- Microwave Engineering and Waveguides
- Spacecraft and Cryogenic Technologies
- Advancements in Photolithography Techniques
- Radio Frequency Integrated Circuit Design
- Photocathodes and Microchannel Plates
- Quantum Chromodynamics and Particle Interactions
- Bluetooth and Wireless Communication Technologies
- Nuclear Physics and Applications
- International Science and Diplomacy
- Physics of Superconductivity and Magnetism
- Underwater Vehicles and Communication Systems
- 3D IC and TSV technologies
- Computational Physics and Python Applications
- Electrostatic Discharge in Electronics
- CCD and CMOS Imaging Sensors
- Crystallography and Radiation Phenomena
Brookhaven National Laboratory
2015-2024
RIKEN BNL Research Center
2017-2024
Brookhaven College
2023
Thomas Jefferson National Accelerator Facility
2021
Instituto de Física Corpuscular
2011-2013
European Organization for Nuclear Research
2012
We proposed a novel design for compact superconducting crab cavity with double quarter wave (DQWCC) shape. After fabrication and surface treatments, this niobium proof-of-principle was tested cryogenically in vertical cryostat. The is extremely yet has low frequency of 400 MHz, an essential property service the Large Hadron Collider luminosity upgrade. cavity's electromagnetic properties are well suited demanding task. demonstrated deflecting voltage 4.6 MV above required 3.34 future High...
The field of hadrontherapy has grown rapidly in recent years. At present the therapeutic beam is provided by a cyclotron or synchrotron, but neither cyclotrons nor synchrotrons best performances for hadrontherapy. new generation accelerators should allow fast active energy modulation and have high repetition rate, so that moving organs can be appropriately treated reasonable time. In addition, reduction dimensions cost would make acquisition operation facility more affordable, which...
Electron-hadron colliders are the ultimate tool for high-precision quantum chromodynamics studies and provide microscope probing internal structure of hadrons. The electron is an ideal probe proton because it provides unmatched precision electromagnetic interaction, as virtual photon or vector bosons in a clean environment, kinematics which uniquely determined by beam scattered lepton, hadronic final state accounting appropriately radiation. Hadron Electron Ring Accelerator HERA (DESY,...
TERA Foundation has proposed and designed hadrontherapy facilities based on novel linacs, i.e. high gradient linacs which accelerate either protons or light ions. The overall length of the linac, therefore its cost, is almost inversely proportional to average accelerating gradient. With scope studying limiting factors for operation optimize linac design, TERA, in collaboration with CLIC Structure Development Group, conducted a series experiments. main goals were study behavior evaluate...
Charged particle therapy, or so-called hadrontherapy, is developing very rapidly. There large pressure on the scientific community to deliver dedicated accelerators, providing best possible treatment modalities at lowest cost. In this context, Italian research Foundation TERA fast-cycling dubbed `cyclinacs'. These are a combination of cyclotron (accelerating ions fixed initial energy) followed by high gradient linac boosting energy up maximum needed for medical therapy. The powered many...
The use of C-Band structures for electron acceleration and production high quality beams has been proposed adopted in several linac projects all over the world. two main that such type are Japanese Free Electron Laser (FEL) project Spring-8 SwissFEL at Paul Scherrer Institute (PSI). Also energy upgrade SPARC photo-injector LNF-INFN (Italy) from 150 to more than 240 MeV will be done by replacing a low gradient S-Band accelerating structure with C-band structures. Traveling Wave (TW) Constant...
The numerous parasitic encounters near interaction points of some particle colliders can be mitigated by introducing a crossing angle between beams. However, the lowers luminosity due to reduced geometric overlap bunches. Crab cavities allow restoring head-on collisions at point, thus increasing luminosity. also offer mechanism for leveling. KEKB was first facility implement crab technique in 2007, electron and positron High Luminosity Large Hadron Collider (HL-LHC) project envisages use...
The document summarizes the recent papers, presentations and other public information on Radio-Frequency (RF) Linear Accelerators (linacs) Fixed-Field Alternating-Gradient (FFAG) accelerators for hadron therapy. main focus is technical aspects of these accelerators. This report intends to provide a general overview state-of-the-art in those which could be used short middle-term treating cancer.
The HL-LHC project aims at increasing the LHC luminosity by a factor 10 beyond design value. installation of set RF Crab Cavities to increase bunch crossing angle is one key upgrades program. Two concepts, Double Quarter Wave (DQW) and Dipole (RFD) have been proposed are being produced in parallel for test SPS beam before next long shutdown CERN accelerator’s complex. In retained concept, two cavities hosted single cryomodule, providing thermal insulation interfacing with coupling, tuning,...
Crab crossing is essential for high-luminosity colliders. The Large Hadron Collider (HL-LHC) will equip one of its interaction points (IP1) with double-quarter wave (DQW) crab cavities. A DQW cavity a new generation deflecting rf cavities that stands out compactness and broad frequency separation between fundamental first high-order modes. kick provided by mode. Each HL-LHC shall provide nominal voltage 3.4 MV, although up to 5.0 MV may be required. proof-of-principle (POP) was limited...
Many future particle colliders require beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at interaction point (IP). A first demonstration experiment of with hadron beams was successfully carried out high energy protons. This breakthrough result is fundamental achieve physics goals LHC (HL-LHC) and circular collider (FCC). The expected peak gain (related collision rate) 65% for HL-LHC even greater FCC. Novel experiments proton in CERN's Super Proton...
Superconducting RF cavity developments are currently on-going for new accelerator projects at CERN such as HIE ISOLDE and HL-LHC. Mechanical tuning systems required to compensate frequency shifts of the cavities due temperature, mechanical, pressure effects on geometry. A rich history experience is available mechanical tuners developed existing cavities. Design constraints in context HL-LHC resolution, space limitation, reliability maintainability have led concepts mechanisms. This paper...
The High-Luminosity upgrade for the LHC relies on a set of RF Crab Cavities reaching its goals. Two parallel concepts, Double Quarter Wave (DQW) and Dipole (RFD), are going through comprehensive design process along with preparation fabrication in view extensive tests beam SPS. High Order Modes (HOM) couplers critical providing damping cavities operation accelerators. HOM prototyping have recently started at CERN. In this paper, an overview final shape is provided insight mechanical thermal...
A Double Quarter Wave Crab Cavity (DQWCC) was designed for the Large Hadron Collider (LHC) luminosity upgrade. compact Higher Order Mode (HOM) filter with wide stop band at deflecting mode is developed this cavity. Multi-physics finite element simulation results are presented. The integration of design to cavity cryomodule described.
Abstract The Electron Ion Collider (EIC) Hadron Storage Ring (HSR) will reuse many of the existing superconducting (SC) magnets RHIC storage rings. To comply with beamline vacuum requirements in more demanding operational scenarios, beampipe SC be equipped low surface impedance, secondary electron yield (SEY) beam screens. installation these screens done as installed today, thus making it a critical operation for timely EIC installation. screen inner dimensions must maximized to retain...
Abstract The Electron Ion Collider (EIC) Hadron Storage Ring (HSR) will reuse most of the existing superconducting magnets from RHIC storage ring. However, stripline beam position monitors (BPM) used for not be compatible with planned EIC hadron parameters that include higher intensity, shorter bunches, and some operational scenarios large radial offsets in vacuum chamber. To address these challenges, BPMs decommissioned, a new BPM design using button pick-ups integrated interconnect/bellows...