We report on the status and plans of experiments now running or proposed for electron-positron co... more We report on the status and plans of experiments now running or proposed for electron-positron colliders at energies between the φ and the Z. The e + e − B and charm factories we considered were PEP-II/BABAR, KEKB/Belle, superKEK, SuperBABAR, and CESR-c/CLEO-c. We reviewed the programs at the φ factory at Frascati and the proposed PEP-N facility at Stanford Linear Accelerator Center. We studied the prospects for B physics with a dedicated linear collider Z factory, associated with the TESLA high energy linear collider. In all cases, we compared the physics reach of these facilities with that of alternative experiments at hadron colliders or fixed target facilities.
Fixed target experimentation remains a vigorous and important tool. In many cases it provides the... more Fixed target experimentation remains a vigorous and important tool. In many cases it provides the best technique to study elementary physics. Here we explore several areas, where, in the near future, fixed target experiments have the potential to alter our understanding of physics. These include, but are clearly not limited to, high precision tests of CP violation in the Kaon sector, ultra-precise determination of the weak mixing angle and its evolution, and lepton flavor violation.
The NOνA Project will construct a 15 kt Far Detector 835 km from Fermilab at Ash River Minnesota,... more The NOνA Project will construct a 15 kt Far Detector 835 km from Fermilab at Ash River Minnesota, a 220 ton Near Detector on the Fermilab site and upgrade the existing NuMI beamline from 400 kW to 700 kW. The detector technology is liquid scintillator captured in reflective rigid PVC cells. The light is captured using WLS fibre and routed to avalanche photo diodes. NOνA is designed to observe the appearance of electron neutrinos, determine the value of sin 2 (2θ 13) and begin the study of CP violation in the neutrino sector. NOνA is the only currently approved experiment with the ability to determine the neutrino mass ordering. The NOvA physics program and projected sensitivities are described in this report.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991
The central calorimeter in Ferm .b experiment E760f+ has been designed to measure the topology an... more The central calorimeter in Ferm .b experiment E760f+ has been designed to measure the topology and energies of electrons and photons in the decay of charmonium formed in p p annihilation. The calorimeter is composed of 1280 lead-glass cerenkov counters read out with photomultiplier tubes. This paper discusses design criteria for the calorimeter and describes how these criteria were met. Data from tests in low energy (lo-84 MeV) and medium energy (1-4 GeV) beams are presented showing a spstis.l resolution of 9 mm, an energy resolution of (3.0*0.3)%/~~+(1.5~0.5)~ o, and an effective energy threshold below 10 MeV.
The Mu2e experiment at Fermilab will search for charged lepton flavor
violation via the coherent ... more The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- N with a sensitivity approximately four orders of magnitude better than the current world's best limits for this process. The experiment's sensitivity offers discovery potential over a wide array of new physics models and probes mass scales well beyond the reach of the LHC. We describe herein the preliminary design of the proposed Mu2e experiment. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2 approval.
We report on the status and plans of experiments now running or proposed for electron-positron co... more We report on the status and plans of experiments now running or proposed for electron-positron colliders at energies between the φ and the Z. The e + e − B and charm factories we considered were PEP-II/BABAR, KEKB/Belle, superKEK, SuperBABAR, and CESR-c/CLEO-c. We reviewed the programs at the φ factory at Frascati and the proposed PEP-N facility at Stanford Linear Accelerator Center. We studied the prospects for B physics with a dedicated linear collider Z factory, associated with the TESLA high energy linear collider. In all cases, we compared the physics reach of these facilities with that of alternative experiments at hadron colliders or fixed target facilities.
Fixed target experimentation remains a vigorous and important tool. In many cases it provides the... more Fixed target experimentation remains a vigorous and important tool. In many cases it provides the best technique to study elementary physics. Here we explore several areas, where, in the near future, fixed target experiments have the potential to alter our understanding of physics. These include, but are clearly not limited to, high precision tests of CP violation in the Kaon sector, ultra-precise determination of the weak mixing angle and its evolution, and lepton flavor violation.
The NOνA Project will construct a 15 kt Far Detector 835 km from Fermilab at Ash River Minnesota,... more The NOνA Project will construct a 15 kt Far Detector 835 km from Fermilab at Ash River Minnesota, a 220 ton Near Detector on the Fermilab site and upgrade the existing NuMI beamline from 400 kW to 700 kW. The detector technology is liquid scintillator captured in reflective rigid PVC cells. The light is captured using WLS fibre and routed to avalanche photo diodes. NOνA is designed to observe the appearance of electron neutrinos, determine the value of sin 2 (2θ 13) and begin the study of CP violation in the neutrino sector. NOνA is the only currently approved experiment with the ability to determine the neutrino mass ordering. The NOvA physics program and projected sensitivities are described in this report.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991
The central calorimeter in Ferm .b experiment E760f+ has been designed to measure the topology an... more The central calorimeter in Ferm .b experiment E760f+ has been designed to measure the topology and energies of electrons and photons in the decay of charmonium formed in p p annihilation. The calorimeter is composed of 1280 lead-glass cerenkov counters read out with photomultiplier tubes. This paper discusses design criteria for the calorimeter and describes how these criteria were met. Data from tests in low energy (lo-84 MeV) and medium energy (1-4 GeV) beams are presented showing a spstis.l resolution of 9 mm, an energy resolution of (3.0*0.3)%/~~+(1.5~0.5)~ o, and an effective energy threshold below 10 MeV.
The Mu2e experiment at Fermilab will search for charged lepton flavor
violation via the coherent ... more The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- N with a sensitivity approximately four orders of magnitude better than the current world's best limits for this process. The experiment's sensitivity offers discovery potential over a wide array of new physics models and probes mass scales well beyond the reach of the LHC. We describe herein the preliminary design of the proposed Mu2e experiment. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2 approval.
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Papers by Ron Ray
violation via the coherent conversion process mu- N --> e- N with a sensitivity
approximately four orders of magnitude better than the current world's best
limits for this process. The experiment's sensitivity offers discovery
potential over a wide array of new physics models and probes mass scales well
beyond the reach of the LHC. We describe herein the preliminary design of the
proposed Mu2e experiment. This document was created in partial fulfillment of
the requirements necessary to obtain DOE CD-2 approval.
violation via the coherent conversion process mu- N --> e- N with a sensitivity
approximately four orders of magnitude better than the current world's best
limits for this process. The experiment's sensitivity offers discovery
potential over a wide array of new physics models and probes mass scales well
beyond the reach of the LHC. We describe herein the preliminary design of the
proposed Mu2e experiment. This document was created in partial fulfillment of
the requirements necessary to obtain DOE CD-2 approval.