摘要:

An important feature of a &mgr;-storage ring &ngr;-source is that it can be extended to the possibility of a future high-energy muon collider. The neutrino source provides a useful physics device that initiates key technologies required for future&mgr;+–&mgr;−colliders but with much less demanding parameter requirements. These technologies include high-intensity &mgr;-production, &mgr;-capture, &mgr;-cooling, &mgr;-acceleration and multi-turn &mgr; storage rings.&mgr;+–&mgr;−colliders require a similar number of muons, but they require that the muons be cooled to a much smaller phase space and formed into a small number of bunches, and both positive and negative bunches must be simultaneously captured. These differences are discussed, and the extension of the &ngr;-source to&mgr;+–&mgr;−collider specifications is described. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336256

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

A possible scheme of the neutrino factory in Japan based on the 50-GeV PS of the KEK-JAERI joint project is described. In this scheme, beam power of about 1 MW is expected from the 50-GeV PS with a repetition rate of about 0.4 Hz. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336257

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

The PRISM project in Japan to consider a high-intensity low-energy muon source is discussed. PRISM would include solenoid pion capture and phase rotation to create a muon beam of1012&mgr;±/secwith high purity and small energy spread, if it is combined with the planned 50-GeV proton synchrotron in the KEK/JAERI Joint Project. The PRISM could be extended to a front end of a neutrino factory in the future. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336258

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

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. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336259

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

High intensity muon sources are needed in exploring neutrino factories, lepton flavor violating muon processes, and lower energy experiments as the stepping phase towards building higher energy&mgr;+&mgr;−colliders. We present a brief overview, sketch of a neutrino source, and an example of a muon storage ring at BNL with detector(s) at Fermilab, Sudan, etc. Physics with low energy neutrino beams based on muon storage rings (&mgr;SR) and conventional Horn Facilities are described and compared. CP violation Asymetries and a new Statistical Figure of Merit to be used for comparison is given. Improvements in the sensitivity of low energy experiments to study Flavor changing neutral currents are also included. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336260

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

This paper compares various types of recirculating accelerators, outlining the advantages and disadvantages of various approaches. The accelerators are characterized according to the types of arcs they use: whether there is a single arc for the entire recirculator or there are multiple arcs, and whether the arc(s) are isochronous or non-isochronous. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336261

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

A rotating toroid is considered as a target for the production of pions by intense high energy proton beams for a neutrino factory. The toroid rotates in vacuum and the power is radiated to the water-cooled walls of the vacuum chamber. It is shown that steady powers of over 100 MW can be dissipated by thermal radiation at temperatures of ∼2500 K, using a suitable refractory material such as tantalum or tungsten. Under pulsed beam conditions, the thermal stresses induced in the toroid will reduce the power capabilities. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336262

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

This report is an overview of the discussions and talks that occurred during the detectors and beams working group of the NuFact99 workshop in Lyon, France, combined with a few topics that have been better understood since then. A wish list of muon beam parameters is given, as well as a survey of currently studied oscillation detector technologies. Finally, a short description of the nonoscillation physics that would be accessible is included to show the diversity of neutrino physics a muon storage ring could address. Workshop talk slides can be found in http://muonstoragerings.cern.ch/Welcome.html/.©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336263

出版商:AIP    

年代:1900

数据来源: AIP

摘要:

After recalling briefly the main physics issues beyond the Standard Model, the main physics objectives of experiments at CERN in the coming decade(s) are reviewed. These include the conclusion of the LEP program during the year 2000, a limited number of fixed-target experiments during the following years, the CNGS long-baseline neutrino program and the LHC, both scheduled to start in 2005. Then possible accelerator projects at CERN after the LHC are reviewed, in the expectation that ane+e−linear collider in the TeV energy range will be built elsewhere. The default option for CERN’s next major project may be the CLIC multi-TeVe+e−collider project. Also interesting is the option of a three-step scenario for muon storage rings, starting with a neutrino factory, continuing with one or more Higgs factories, and culminating in a&mgr;+&mgr;−collider at the high-energy frontier. ©2000 American Institute of Physics.

ISSN:0094-243X    

DOI:10.1063/1.1336264

出版商:AIP    

年代:1900

数据来源: AIP