Zachary Conway
YOU?
Author Swipe
View article: Design and prototyping of the Electron Ion Collider electron storage ring 591 MHz elliptical SRF cavity
Design and prototyping of the Electron Ion Collider electron storage ring 591 MHz elliptical SRF cavity Open
The electron storage ring (ESR) in the Electron Ion Collider (EIC) requires a challenging 591 MHz fundamental 17-cavity RF system to provide up to 10 MW CW power to the beam with up to 2.5 A beam current and a wide range of voltage. In thi…
View article: The EIC accelerator: design highlights and project status
The EIC accelerator: design highlights and project status Open
The design of the electron-ion collider (EIC) at Brookhaven National Laboratory is well underway, aiming at a peak electron-proton luminosity of 10e+34 cm^-1·sec^-1. This high luminosity, the wide center-of-mass energy range from 29 to 141…
View article: High-power test results for a cylindrical-shell silicon carbide higher-order-mode damper
High-power test results for a cylindrical-shell silicon carbide higher-order-mode damper Open
The next high-current Electron-Ion Collider (EIC) is a new accelerator to be built at Brookhaven National Laboratory in collaboration with Thomas Jefferson National Accelerator Facility. In the EIC Electron Storage Ring (ESR), there will b…
View article: High Power Test Results For A Cylindrical-Shell SiC Higher-Order-Mode DAMPER
High Power Test Results For A Cylindrical-Shell SiC Higher-Order-Mode DAMPER Open
The next high-current Electron Ion Collider (EIC) is a new accelerator to be built at Brookhaven National Laboratory (BNL) in collaboration with Thomas Jefferson National Accelerator Facility (TJNAF). In the EIC Electron Storage Ring (ESR)…
View article: Design status of the Electron-Ion Collider
Design status of the Electron-Ion Collider Open
The Electron-Ion Collider is gearing up for "Critical Decision 2", the project baseline with defined scope, cost and schedule. Lattice designs are being finalized, and preliminary component design is being carried out. Beam dynamics studie…
View article: The mapping & avoidance of high order cavity modes
The mapping & avoidance of high order cavity modes Open
In this paper a technique developed in 2016 is presented for mapping the multidimensional, multi-mode high order mode landscape of a beam driven super conducting RF cavity. The initial use case for this technique was intended to allow long…
View article: High power coupler development for EIC
High power coupler development for EIC Open
The synchrotron radiation loss in EIC Electron Storage Ring is as high as up to 10 MW. This energy loss will be compensated by 17 2K 591 MHz single-cell SRF cavities with a combined total of 34 high power fundamental power couplers. Each p…
View article: Upgrade of the RHIC 56 MHz superconducting quarter-wave resonator crymodule
Upgrade of the RHIC 56 MHz superconducting quarter-wave resonator crymodule Open
View article: Design options for a superconducting ion linac
Design options for a superconducting ion linac Open
View article: Design Status Update of the Electron-Ion Collider
Design Status Update of the Electron-Ion Collider Open
The design of the electron-ion collider EIC to be constructed at Brookhaven National Laboratory has been continuously evolving towards a realistic and robust design that meets all the requirements set forth by the nuclear physics community…
View article: The RCS Design Status for the Electron Ion Collider
The RCS Design Status for the Electron Ion Collider Open
The design of the Electron-Ion Collider Rapid Cycling Synchrotron (RCS) to be constructed at Brookhaven National Laboratory is advancing to meet the injection requirements for the Electron Storage Ring (ESR). Over the past year activities …
View article: Design of Stand-Alone Cryomodule Based on Superconducting Quarter-Wave Resonator
Design of Stand-Alone Cryomodule Based on Superconducting Quarter-Wave Resonator Open
Present superconducting accelerators require a central refrigeration system and piping to distribute liquid helium and nitrogen. Stand-alone cryocooler-based systems are of significant interest both to scientific and industrial customers, …
View article: Niobium quarter-wave resonator with the optimized shape for quantum information systems
Niobium quarter-wave resonator with the optimized shape for quantum information systems Open
View article: Design of the multi-ion injector linac for the JLAB EIC (JLEIC)
Design of the multi-ion injector linac for the JLAB EIC (JLEIC) Open
An Electron Ion Collider (EIC) is the highest priority for future U.S. accelerator-based nuclear physics facility following the completion of the Facility for Rare Isotope Beams (FRIB). Two laboratories are competing to host the future EIC…
View article: Stand-alone accelerator system based on SRF quarter-wave resonators
Stand-alone accelerator system based on SRF quarter-wave resonators Open
Superconducting accelerators are large and complex systems requiring a central refrigerator and distributed transfer systems to supply 2-4 K liquid helium. Stand-alone, cryocooler-based systems are of interest both to scientific facilities…
View article: Effects of Static Magnetic Fields on a Low-frequency TEM Class Superconducting Cavity
Effects of Static Magnetic Fields on a Low-frequency TEM Class Superconducting Cavity Open
Systematic studies on the effect of magnetic fields on a 330 MHz superconducting (TEM-mode) half-wave cavity are presented. The practical application of the results is for a possible future 2 K operation in the ATLAS heavy-ion accelerator …
View article: The US Electron Ion Collider Accelerator Designs
The US Electron Ion Collider Accelerator Designs Open
With the completion of the National Academies of Sciences Assessment of a US Electron-Ion Collider, the prospects for construction of such a facility have taken a step forward. This paper provides an overview of the two site-specific EIC d…
View article: Superconducting Harmonic Cavity for Bunch Lengthening in the APS Upgrade
Superconducting Harmonic Cavity for Bunch Lengthening in the APS Upgrade Open
A superconducting cavity based Bunch Lengthening System is under construction for the Argonne’s Advanced Photon Source (APS) Upgrade. The system will reduce the undesirable effects of Touschek scattering on the beam lifetime by providing b…
View article: Design of the Multi-Ion Injector Linac for the JLAB EIC (JLEIC)
Design of the Multi-Ion Injector Linac for the JLAB EIC (JLEIC) Open
An Electron Ion Collider (EIC) is the highest priority for future U.S. accelerator-based nuclear physics facility following the completion of the Facility for Rare Isotope Beams (FRIB). Two laboratories are competing to host the future EIC…
View article: New SRF Structures Processed at the ANL Cavity Processing Facility
New SRF Structures Processed at the ANL Cavity Processing Facility Open
Argonne National Laboratory (ANL) has extended high quality cavity processing techniques based on those developed for the International Linear Collider to several more complex superconducting RF cavities. Recently, these include a bunch le…
View article: Electro-Mechanical Properties of Spoke-Loaded Superconducting Cavities
Electro-Mechanical Properties of Spoke-Loaded Superconducting Cavities Open
This paper presents experimental data characterizing the electro-mechanical properties of superconducting spoke-loaded cavities developed for high-intensity ion-linac applications, such as the cw ANL Advanced Exotic Beams Laboratory (AEBL)…
View article: Low-Level RF Control of Microphonics in Superconducting Spoke-Loaded Cavities
Low-Level RF Control of Microphonics in Superconducting Spoke-Loaded Cavities Open
This paper presents the results of cw RF frequency control and RF phase-stabilization experiments performed with a piezoelectric fast tuner mechanically coupled to a superconducting, 345 MHz, Ë = 0.5 triple-spoke-loaded cavity operating at…
View article: The Upgrade of the Advanced Photon Source
The Upgrade of the Advanced Photon Source Open
After decades of successful operation as a 7-GeV synchrotron radiation source, the Advanced Photon Source is pursing a major upgrade that involves replacement of the storage ring with an ultra-low emittance multi-bend achromat design. Usin…
View article: Progress Toward 2 K High Performance Half-wave Resonators and Cryomodule
Progress Toward 2 K High Performance Half-wave Resonators and Cryomodule Open
Argonne National Laboratory is implementing a novel 2.0 K superconducting cavity cryomodule operating at 162.5 MHz. This cryomodule is designed for the acceleration of 2 mA H-/proton beams from 2.1 to 10.3 MeV as part of the Fermilab Proto…
View article: The PIP-II Conceptual Design Report
The PIP-II Conceptual Design Report Open
The Proton Improvement Plan-II (PIP-II) encompasses a set of upgrades and improvements to the Fermilab accelerator complex aimed at supporting a world-leading neutrino program over the next several decades. PIP-II is an integral part of th…
View article: Instrumentation for localized superconducting cavity diagnostics
Instrumentation for localized superconducting cavity diagnostics Open
Superconducting accelerator cavities are now routinely operated at levels approaching the theoretical limit of niobium. To achieve these operating levels more information than is available from the RF excitation signal is required to chara…
View article: Alternative Design for the RISP Pre-Stripper Linac
Alternative Design for the RISP Pre-Stripper Linac Open
In a collaborative effort between Argonne's Linac Development Group and the RISP project team at the Korean Institute for Basic Science, we have developed an alternative design for the pre-stripper section of the RISP driver linac. The pro…
View article: Design of the Room-Temperature Front-End for a Multi-Ion Linac Injector
Design of the Room-Temperature Front-End for a Multi-Ion Linac Injector Open
A pulsed multi ion injector linac is being developed by ANL for Jefferson Laboratory's Electron Ion Collider (JLEIC). The linac is designed to deliver both polarized and non polarized ion beams to the booster synchrotron at energies rangin…
View article: Adapting the JLEIC Electron Ring for Ion Acceleration
Adapting the JLEIC Electron Ring for Ion Acceleration Open
A key component of the recently proposed alternative design approach for the JLab-EIC (JLEIC) ion complex is to consolidate the electron storage ring (e-ring) as a large booster for the ions*. A preliminary parameter study showed that it i…
View article: Progress Towards a 2.0 K Half-Wave Resonator Cryomodule for Fermilab's PIP-II Project
Progress Towards a 2.0 K Half-Wave Resonator Cryomodule for Fermilab's PIP-II Project Open
In support of Fermilab's Proton Improvement Plan-II project Argonne National Laboratory is constructing a superconducting half-wave resonator cryomodule. This cryomodule is designed to operate at 2.0 K, a first for low-velocity ion acceler…