A. Garren

Muon storage rings for 6D phase-space cooling

We describe several storage ring designs for reducing the 6-dimensional phase space of circulating muon beams. These rings utilize quadrupole and dipole magnets as well as wedge-shaped, liquid-hydrogen, energy-loss absorbers and energy compensating rf cavities. We obtain evaluations of their cooling performance by particle tracking simulation. Such rings are potentially useful for future Neutrino Factories or Muon Colliders as well as for existing facilities in which cooled, intense muon beams could enhance their physics programs.

A compact hard X-ray source for medical imaging and biomolecular studies

Abstract There are a large number of synchrotron light sources in the world. However, these sources are designed for physics, chemistry, and engineering studies. To our knowledge, none have been optimized for either medical imaging or biomolecular studies. There are special needs for these applications. We present here a preliminary design of a very compact source, small enough for a hospital or a biomolecular laboratory, that is suitable for these applications.

A 1.5 GeV compact light source with superconducting bending magnets

This paper describes the design of a compact electron synchrotron light source for producing X-rays for medical imaging, protein crystallography, nano-machining and other uses up to 35 keV. The source will provide synchrotron light from six 6.9 tesla superconducting 60/spl deg/ bending magnet stations. In addition the ring, contains conventional quadrupoles and sextupoles. The light source has a circumference of 26 meters, which permits it to be located in a variety of industrial and medical facilities.

Comparison of 6D ring cooler schemes and dipole cooler for μ+ μ- collider development

We discuss the various schemes to use ring coolers for 6D cooling for mu+mu- colliders. The earliest successful cooler used dipoles and quadrupoles and a high dispersion low beta region. This was also proposed in the form of solenoids. Recently there have been many new ideas. The simplest is to use a simple dipole ring with high-pressure gas absorber or Li hydride. We show the results of simulations and compare with the results for other cooler schemes.

6D Cooling of a Circulating Muon Beam

We discuss the conceptual design of a system to reduce the 6D emittance of a circulating muon beam. This system utilizes ionization cooling to achieve 6D phase reduction of the beam. Our design is based on a hydrogen gas filled ring which incorporates optics consisting of weak‐focusing dipoles and 200 MHz rf cavities which restore the ionization energy loss due to the muons traversing the hydrogen gas.

A neutrino-factory muon storage ring to provide beams for multiple detectors around the world

We briefly discuss the physics motivation for a neutrino factory with varying baseline distances of about 1000 to 9000 km. We describe the amount of non planarity of the storage ring required to service three or four detectors at once. A novel bowtie storage ring is described that could in part provide these beams; a preliminary lattice design is given. We give the space angles between the various detector locations and possible sites for neutrino factories. Finally we describe detectors at the Gran Sasso Laboratory and at a new laboratory near Carlsbad, NM to observe the neutrino interactions with wrong sign leptons.

An ultra-compact hard X-ray superconducting light source for biotechnology and industrial use

Abstract We describe the design of a 1.5-GeV ultra-compact storage ring that uses 7-T superconducting magnets. The aim of this source is to provide intense 10–30 keV X-rays of moderate brilliance for commercial application. The first prototype is being designed for the UCLA Science and Technology Research Building (STRB) in Westwood, California.

A compact-high performance NLC damping ring using high magnetic field bending magnets

We describe a 1.5 GeV damping ring for very low emittance e/sup /spl plusmn// beams that can be used for the NLC. A key feature of this system is the use of 7 T bending magnets to greatly reduce the size and cost of the storage ring as well as the tune and the damping ring while increasing the acceptance. We present only a preliminary study here.

Conventional 20-GeV muon storage rings for a neutrino factory

20 and 50-GeV lattices have been designed for muon storage rings at Brookhaven National Laboratory (BNL) and Fermi National Accelerator Laboratory (FNAL), respectively. Only recent work on the 20-GeV ring will be discussed in detail here as the 50-GeV ring has been well documented (Fermilab-Pbu-00/108-E, 2000). The 20-GeV designs presented in this paper supplement the lattice developed at BNL for the Feasibility II Study of a Neutrino Factory (BNL-52623, June 2001). The principal difference between these designs is the use of an unconventional type of magnet in the Feasibility II Study design and of conventional magnets in the ones presented here.

A compact sub-Angstrom X-ray source for protein crystallography, nano-technology and coronary angiography

The authors describe the scientific motivation and a schematic design of a very compact superconducting 1.5 GeV X-ray storage ring. Prototype tests of the 8 Tesla magnets are the key factor in the realization of this machine.<<ETX>>