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A 15-T Pulsed Solenoid for a High-Power Target Experiment

Description: The MERIT experiment, which ran at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. Here, we describe the design and performance of the 15-T, liquid-nitrogen-precooled, copper solenoid magnet.
Date: June 23, 2008
Creator: Kirk,H.G.; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Pereira, H.; Titus, P. et al.
Partner: UNT Libraries Government Documents Department

A 15-T Pulsed Solenoid for a High-Power Target Experiment

Description: The MERIT experiment, to be run at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. Here, we describe the design and initial performance of the 15-T, liquid-nitrogen-precooled, copper solenoid magnet.
Date: June 26, 2006
Creator: Kirk,H.G.; Efthymiopoulos, I.; Fabich, A.; Haug, R.; Titus, P.; McDonald, K. T. et al.
Partner: UNT Libraries Government Documents Department

The MERIT(nTOF-11) High Intensity Liquid Mercury Target Experiment at the CERN PS

Description: The MERIT(nTOF-11) experiment is a proof-of-principle test of a target system for a high power proton beam to be used as front-end for a neutrino factory or a muon collider. The experiment took data in autumn 2007 with the fast-extracted beam from the CERN Proton Synchrotron (PS) to a maximum intensity of 30 x 10{sup 12} per pulse. The target system, based on a free mercury jet, is capable of intercepting a 4-MW proton beam inside a 15-T magnetic field required to capture the low energy secondary pions as the source for intense muon beams. Particle detectors installed around the target setup measure the secondary particle flux out of the target and can probe cavitation effects in the mercury jet when excited by an intense proton beam. Preliminary results of the data analysis will be presented here.
Date: June 1, 2008
Creator: Efthymiopoulos, I.; Fabich, A.; Palm, M.; Lettry, J.; Haug, F.; Pernegger, H. et al.
Partner: UNT Libraries Government Documents Department

The MERIT High-Power Target Experiment at the CERN PS

Description: The MERIT experiment was designed as a proof-of-principle test of a target system based on a free mercury jet inside a 15-T solenoid that is capable of sustaining proton beam powers of up to 4 MW. The experiment was run at CERN in the fall of 2007. We describe the results of the tests and their implications.
Date: June 1, 2008
Creator: Kirk, H.G.; Tsang, T.; /Brookhaven; Efthymiopoulos, I.; Fabich, A.; Haug, F. et al.
Partner: UNT Libraries Government Documents Department

A high-power target experiment at the CERN PS

Description: We test a target concept devised for the purpose of producing copious secondary pions and capturing the muon decay products. This experiment is designed to test the target system for a neutrino factory or muon collider and consists of a free flowing mercury stream embedded in a high-field solenoid. Key components are described.
Date: June 1, 2007
Creator: Kirk, H.G.; Park, H.J.; Tsang, T.; /Brookhaven; Fabich, A.; Efthymiopoulos, I. et al.
Partner: UNT Libraries Government Documents Department

A Proof-of-Principal Experiment for a High-Power Target System

Description: The MERIT experiment, to be run at CERN in 2007, is a proof-of-principle test for a target system that converts a 4-MW proton beam into a high-intensity muon beam for either a neutrino factory complex or a muon collider. The target system is based on a free mercury jet that intercepts an intense proton beam inside a 15-T solenoidal magnetic field. A muon collider or neutrino factory requires intense beams of muons, which are obtained from the decay of pions. Pion production by a proton beam is maximized by use of a high-Z target such as mercury. A liquid jet target has the advantages over a solid target that a flowing jet can readily remove heat and that it is immune to radiation damage. However the proton beam energy disrupts the jet and the system could be operationally unstable. Efficient capture of low-energy secondary pions (for transfer into the subsequent muon accelerator complex) requires that the target system be immersed in a strong magnetic field of solenoidal geometry. This magnetic field should stabilize the mercury flow in regions of nearly uniform field, but it perturbs the liquid metal jet as it enters the field. Hence, the behavior of the mercury jet plus an intense proton beam inside a strong magnetic field needs to be understood better before resources are committed to a larger facility. The MERIT experiment is to be conducted at CERN in 2007 for this purpose.
Date: June 26, 2006
Creator: Kirk,H.G.; Samulyak, R.; Simos, N.; Tsang, T.; Efthymiopoulos, I.; Fabich, A. et al.
Partner: UNT Libraries Government Documents Department

Time Structure of Particle Production in the MERIT High-Power Target Experiment

Description: The MERIT experiment is a proof-of-principle test of a target system for high power proton beam to be used as front-end for a neutrino factory complex or amuon collider. The experiment took data in autumn 2007 with the fast extracted beam from the CERN Proton Synchrotron (PS) to a maximum intensity of about 30 x 10{sup 12} protons per pulse. We report results from the portion of the MERIT experiment in which separated beam pulses were delivered to a free mercury jet target with time intervals between pulses varying from 2 to 700 {micro}s. The analysis is based on the responses of particle detectors placed along side and downstream of the target.
Date: May 1, 2009
Creator: Efthymiopoulos, I.; Fabich, A.; Palm, M.; Lettry, J.; Haug, F.; Pereira, H. et al.
Partner: UNT Libraries Government Documents Department

The MERIT High-Power Target Experiment at the CERN PS

Description: The MERIT experiment was designed as a proof-of-principle test of a target system based on a free mercury jet inside a 15-T solenoid that is capable of sustaining proton beam powers of up to 4 MW. The experiment was run at CERN in the fall of 2007. We describe the results of the tests and their implications.
Date: May 1, 2009
Creator: McDonald, K.T.; U., /Princeton; Kirk, H.G.; Park, H.; Tsang, T.; /Brookhaven et al.
Partner: UNT Libraries Government Documents Department

The MERIT High-Power Target Experiment at the CERN PS.

Description: The MERIT experiment was designed as a proof-of-principle test of a target system based on a free mercury jet inside a 15-T solenoid that is capable of sustaining proton beam powers of up to 4 MW. The experiment was run at CERN in the fall of 2007. We describe the results of the tests and their implications. Plans are being discussed for possible future machines which can deliver proton beams with multi-MW beam powers. A prominent application for these powerful beams will be to produce intense secondary beams suitable for investigating important physics issues. Examples include investigations of rare decay processes and neutrino oscillations. The Neutrino Factory and Muon Collider Collaboration [1] has proposed a target system [2, 3] which will be capable of supporting proton beam powers of 4 MW with the purpose of producing and collecting intense muon beams for eventual use in storage rings. The core of this proposed target system consists of a high-Z, free-flowing liquid mercury jet which intercepts the proton beam within the confines of a high-field (15-20 T) solenoid. An important attribute of this system is that the liquid jet target can be replaced for subsequent proton pulses. The experiment described in this paper was designed to provide a proof-of-principle demonstration of this concept. Preparations for this experiment have been previously reported [4].
Date: June 23, 2008
Creator: Kirk,H.G.; Tsang, T.; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Lettry, J. et al.
Partner: UNT Libraries Government Documents Department

The MERIT High-Power Target Experiment at the CERN PS

Description: We report on the analysis of data collected in the MERIT experiment at CERN during the Fall of 2007. These results validate the concept of a free mercury jet inside a high-field solenoid magnet as a target for a pulsed proton beam of 4-MW power, as needed for a future Muon Collider and/or Neutrino Factory.
Date: May 1, 2010
Creator: McDonald, K.T.; U., /Princeton; Kirk, H.G.; Park, H.; Tsang, T.; /Brookhaven et al.
Partner: UNT Libraries Government Documents Department

Accelerator Design Concept for Future Neutrino Facilities

Description: This document summarizes the findings of the Accelerator Working Group (AWG) of the International Scoping Study (ISS) of a Future Neutrino Factory and Superbeam Facility. The work of the group took place at three plenary meetings along with three workshops, and an oral summary report was presented at the NuFact06 workshop held at UC-Irvine in August, 2006. The goal was to reach consensus on a baseline design for a Neutrino Factory complex. One aspect of this endeavor was to examine critically the advantages and disadvantages of the various Neutrino Factory schemes that have been proposed in recent years.
Date: February 3, 2008
Creator: Group, ISS Accelerator Working; Zisman, Michael S; Berg, J. S.; Blondel, A.; Brooks, S.; Campagne, J.-E. et al.
Partner: UNT Libraries Government Documents Department