First results from a 1.1-m-diameter superconducting monopole detector
- 1. Department of Physics and The Enrico Fermi Institute, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637
Description
We present the design and performance of a superconducting induction magnetic-monopole detector with 1.1-m-diameter gradiometer loops. The detector demonstrates that gradiometers can be overlapped with no mutual inductance to yield high redundancy without increasing shield volume. One of two detector units was sensitive to the passage of monopoles through two overlapped gradiometers with 98% coincidence efficiency for 161 hours. The unit has a coincident sensitive area averaged over 4π sr of 4400 cm2. No candidate events were observed, setting an upper limit on the flux of cosmic-ray magnetic monopoles of fapprox. <7.1 x 10/sup -11/ cm/sup -2/ sr/sup -1/ sec/sup -1/ (90% C.L.). The detector was operated in ambient magnetic fields of --5--125 mG
Additional details
Publishing Information
- Journal Title
- Phys. Rev., D
- Journal Volume
- 34
- Journal Issue
- 9
- Series
- Phys. Rev., D.
- Journal Page Range
- 2637-2647
- ISSN
- 0556-2821
- CODEN
- PRVDA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18024079
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- COINCIDENCE SPECTROMETRY; COSMIC RADIATION; ELECTROMAGNETISM; GRAND UNIFIED THEORY; MAGNETIC FIELDS; MAGNETIC MONOPOLES; RADIATION DETECTORS; SPECIFICATIONS; SQUID DEVICES; SUPERCONDUCTING DEVICES
- Descriptors DEC
- COINCIDENCE METHODS; COUNTING TECHNIQUES; ELECTRONIC EQUIPMENT; ELEMENTARY PARTICLES; EQUIPMENT; FIELD THEORIES; FLUXMETERS; IONIZING RADIATIONS; MAGNETISM; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; MONOPOLES; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; RADIATIONS; UNIFIED GAUGE MODELS