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View article: MOLLER Spectrometer Magnet Design With Measured Mechanical Properties of Irradiated S2-Glass Reinforced Cyanate Ester Resin at Elevated Temperature
MOLLER Spectrometer Magnet Design With Measured Mechanical Properties of Irradiated S2-Glass Reinforced Cyanate Ester Resin at Elevated Temperature Open
The aim of this study was to retire the risk of maintaining the integrity of S2-glass reinforced CTD-403 (a cyanate ester resin) that is exposed to radiation and elevated temperature over the life of the experiment in one of the experiment…
View article: Design and Prototyping of a Novel Toroidal Magnet System for MOLLER Experiment at Jefferson Lab
Design and Prototyping of a Novel Toroidal Magnet System for MOLLER Experiment at Jefferson Lab Open
The Thomas Jefferson National Accelerator Facility (JLab) has designed a unique spectrometer system to measure the weak interaction between electrons. The experiment- Measurement of Lepton-Lepton Electroweak Reaction (MOLLER)- requires lev…
View article: Comparison of Multi-Scale Nonlinear and Conventional Linear Methods for Stress Analysis of Nb<sub>3</sub>Sn Superconducting Magnets
Comparison of Multi-Scale Nonlinear and Conventional Linear Methods for Stress Analysis of Nb<sub>3</sub>Sn Superconducting Magnets Open
Here this is an extension of the work on a multi-scale nonlinear procedure that demonstrated how to conduct nonlinear stress analysis of Nb 3 Sn superconducting accelerator magnets. The nonlinear procedure uses measured stress-strain curve…
View article: Cooling assembly for electrical machines and methods of assembling the same
Cooling assembly for electrical machines and methods of assembling the same Open
A cryocooler assembly for cooling a field winding of an electrical machine having an axis of rotation is provided. The assembly includes a cryocooler and a reservoir coupled in flow communication to the cryocooler and configured to contain…
View article: Remote actuated cryocooler for superconducting generator and method of assembling the same
Remote actuated cryocooler for superconducting generator and method of assembling the same Open
In one embodiment, a cryocooler assembly for cooling a heat load is provided. The cryocooler assembly includes a vacuum vessel surrounding the heat load and a cryocooler at least partially inserted into the vacuum vessel, the cryocooler in…
View article: Diagnostics for Burning Plasmas
Diagnostics for Burning Plasmas Open
Here, recent progress in the design and manufacturing development of in-vessel diagnostic components by the U.S. ITER team is reported. Design and manufacturing choices are driven by engineering challenges stemming from ITER’s burning plas…
View article: General Failure Modes and Effects Analysis for Accelerator and Detector Magnet Design at JLab
General Failure Modes and Effects Analysis for Accelerator and Detector Magnet Design at JLab Open
The aim of this article is to develop a risk management procedure, which could be applied to the magnet design process, for both superconducting and normal magnets at the Jefferson Laboratory (JLab). This procedure allowed us to identify t…
View article: Interactions Observed Between Torus and Solenoid Superconducting Magnets at JLab
Interactions Observed Between Torus and Solenoid Superconducting Magnets at JLab Open
The Jefferson Lab 12 GeV Upgrade of Experimental End Station Hall B required a new detector system that would be more sensitive to forward going particles and able to handle higher luminosity. This new detector is CLAS12 and includes two s…
View article: Test Results of Fast Decaying Current-Induced AC Losses in SHMS Superconducting Magnets at Jefferson Lab
Test Results of Fast Decaying Current-Induced AC Losses in SHMS Superconducting Magnets at Jefferson Lab Open
The 11 GeV Super High Momentum Spectrometer (SHMS) of Hall C, part of the recent 12 GeV accelerator Upgrade at Jefferson Lab, was successfully commissioned in 2017. Fast current discharges of the SHMS Q2, Q3 quadrupoles and dipole supercon…
View article: Optimization of an Interaction Region Quadrupole Magnet for a Future Electron-Ion Collider at JLab
Optimization of an Interaction Region Quadrupole Magnet for a Future Electron-Ion Collider at JLab Open
The Jefferson Lab Electron Ion Collider (JLEIC) is a proposed new machine for nuclear physics research. It uses the existing CEBAF accelerator as a full energy injector to deliver 3 to 11 GeV electrons into a new electron collider ring. An…
View article: Development of FPGA-based multi-sensor excitation low voltage (MSELV) chassis at Jefferson Lab
Development of FPGA-based multi-sensor excitation low voltage (MSELV) chassis at Jefferson Lab Open
The design and development of the sensor excitation and read back chassis was driven by the requirements for the monitoring and control of two conduction-cooled superconducting magnets in Hall B for the 12 GeV accelerator upgrade. The toru…
View article: Optimization of an Interaction Region Quadrupole Magnet for a Future Electron-Ion Collider at JLab
Optimization of an Interaction Region Quadrupole Magnet for a Future Electron-Ion Collider at JLab Open
The Jefferson Lab Electron Ion Collider (JLEIC) is a proposed new machine for nuclear physics research. It uses the existing CEBAF accelerator as a full energy injector to deliver 3 to 11 GeV electrons into a new electron collider ring. An…
View article: Quench-Back Management for Fast Decaying Currents in SHMS Superconducting Magnets at Jefferson Lab
Quench-Back Management for Fast Decaying Currents in SHMS Superconducting Magnets at Jefferson Lab Open
The Super High Momentum Spectrometer (SHMS) of Hall C, part of the 12-GeV upgrade at Jefferson Lab, was successfully commissioned in 2017. Early operation demonstrated that fast current dumps decays of the SHMS Q2/Q3 and dipole superconduc…
View article: Preliminary Design Study of a Fast-Ramping Magnet for Preconcept Design of an Electron–Ion Collider at Jefferson Lab
Preliminary Design Study of a Fast-Ramping Magnet for Preconcept Design of an Electron–Ion Collider at Jefferson Lab Open
The Jefferson Lab Electron Ion Collider (JLEIC) is a proposed new machine for nuclear physics research. The all new ion accelerator and collider complex will consist of two collider rings with a unique figure-of-eight layout to deliver a h…
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: Magnetic Field Mapping of the CLAS12 Torus—A Comparative Study Between the Engineering Model and Measurements at JLab
Magnetic Field Mapping of the CLAS12 Torus—A Comparative Study Between the Engineering Model and Measurements at JLab Open
This study provides an overview of the magnetic field measurement and subsequent electromagnetic re-modeling of the CLAS12 torus during the commissioning of the magnet in the fall of 2016. The CLAS12 detector in Hall B is part of the 12 Ge…
View article: Instrumentation and control selection for the 12 GeV Hall B magnets at Jefferson Lab
Instrumentation and control selection for the 12 GeV Hall B magnets at Jefferson Lab Open
Here, as part of the Jefferson Lab 12 GeV accelerator upgrade, the Experimental Physics Hall B detector system requires two superconducting magnets – a Torus and a Solenoid. The specifications required maximum space for the detectors which…
View article: Commissioning Validation of CLAS-12 Torus Magnet Protection and Cryogenic Safety System
Commissioning Validation of CLAS-12 Torus Magnet Protection and Cryogenic Safety System Open
This paper provides an overview of the CLAS12 Torus magnet electromagnetic loss and energy balance in the magnet system and impact on the cryogenics system during an event of a fast dump and quench, as part of the commissioning activities …
View article: Superconducting Magnet Power Supply and Hard-Wired Quench Protection at Jefferson Lab for 12 GeV Upgrade
Superconducting Magnet Power Supply and Hard-Wired Quench Protection at Jefferson Lab for 12 GeV Upgrade Open
The superconducting magnet system in Hall B being designed and built as part of the Jefferson Lab 12 GeV upgrade requires powering two conduction cooled superconducting magnets - a torus and a solenoid. The torus magnet is designed to oper…
View article: Field Mapper for Superconducting Torus Magnet for the Jefferson Lab 12GeV Upgrade
Field Mapper for Superconducting Torus Magnet for the Jefferson Lab 12GeV Upgrade Open
As part of the Jefferson Lab 12 GeV upgrade, the Hall B magnet system requires two conduction cooled superconducting magnets ? a Torus and a Solenoid. The Torus consists of 6 trapezoidal coils connected in series with an operating current …
View article: Design and Evaluation of Joint Resistance in SSC Rutherford-Type Cable Splices for Torus Magnet for the Jefferson Lab 12-GeV Upgrade
Design and Evaluation of Joint Resistance in SSC Rutherford-Type Cable Splices for Torus Magnet for the Jefferson Lab 12-GeV Upgrade Open
The Hall B 3.6-T superconducting torus magnet is being designed and built as part of the Jefferson Lab 12-GeV upgrade. The magnet consists of six trapezoidal coils connected in series, with an operating current of 3770 A. The magnet and th…
View article: The CLAS12 Torus Detector Magnet at Jefferson Laboratory
The CLAS12 Torus Detector Magnet at Jefferson Laboratory Open
The CLAS12 Torus is a toroidal superconducting magnet, part of the detector for the 12GeV accelerator upgrade at Jefferson Lab. The coils were wound/fabricated by Fermi Lab, with Jlab responsible for all other parts of the project scope, i…
View article: FMEA on the Superconducting Torus for the Jefferson Lab 12 GeV Accelerator Upgrade
FMEA on the Superconducting Torus for the Jefferson Lab 12 GeV Accelerator Upgrade Open
As part of the Jefferson Lab 12GeV accelerator upgrade project, Hall B requires two conduction cooled superconducting magnets. One is a magnet system consisting of six superconducting trapezoidal racetrack-type coils assembled in a toroida…