A magnetic field cloak for charged particle beams
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Superconducting Magnet Division
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; University of Washington, Seattle, WA (United States). Department of Physics
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; University of Virginia, Charlottesville, VA (United States). Department of Physics
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Collider Accelerator Department
- Stony Brook Univ., NY (United States). Department of Physics and Astronomy; Northeastern University, Boston, MA (United States)
Shielding charged particle beams from transverse magnetic fields is a common challenge for particle accelerators and experiments. In this study, we demonstrate that a magnetic field cloak is a viable solution. It allows for the use of dipole magnets in the forward regions of experiments at an Electron Ion Collider (EIC) and other facilities without interfering with the incoming beams. The dipoles can improve the momentum measurements of charged final state particles at angles close to the beam line and therefore increase the physics reach of these experiments. In contrast to other magnetic shielding options (such as active coils), a cloak requires no external powering. We discuss the design parameters, fabrication, and limitations of a magnetic field cloak and demonstrate that cylinders made from 45 layers of YBCO high-temperature superconductor, combined with a ferromagnetic shell made from epoxy and stainless steel powder, shield more than 99% of a transverse magnetic field of up to 0.45 T (95% shielding at 0.5 T) at liquid nitrogen temperature. Lastly, the ferromagnetic shell reduces field distortions caused by the superconductor alone by 90% at 0.45 T.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0012704; AC02-98CH10886
- OSTI ID:
- 1413946
- Alternate ID(s):
- OSTI ID: 1549279
- Report Number(s):
- BNL-114725-2017-JA; R&D Project: PO 004; KB0202012; TRN: US1800599
- Journal Information:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 877, Issue C; ISSN 0168-9002
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Long Length Welded NbTi CIC Superconducting Cable for Accelerator Applications
Final Scientific/Technical Report DOE Award No. DE-SC0018614, SBIR Phase I