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A Concept For Cancelling The Leakage Field Inside The Stored Beam Chamber Of A Septum Magnet
Authors:
M. Abliz,
M. Jaski,
A. Xiao,
A. Jain,
U. Wienands,
H. Cease,
M. Borland,
G. Decker,
J. Kerby
Abstract:
The Advanced Photon Source is in the process of up-grading its storage ring from a double-bend to a multi-bend lattice as part of the APS Upgrade Project (APS-U). A swap-out injection scheme is planned for the APS-U to keep a constant beam current and to enable a small dynamic aperture. A novel concept that cancels out the effect of leakage field inside the stored beam chamber was introduced in th…
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The Advanced Photon Source is in the process of up-grading its storage ring from a double-bend to a multi-bend lattice as part of the APS Upgrade Project (APS-U). A swap-out injection scheme is planned for the APS-U to keep a constant beam current and to enable a small dynamic aperture. A novel concept that cancels out the effect of leakage field inside the stored beam chamber was introduced in the design of the septum magnet. As a result, the horizontal deflecting angle of the stored beam was reduced to below 1 micro-rad with a 2 mm septum thick-ness and 1.06T normal injection field. The concept helped to minimize the integrated skew quadrupole field and normal sextupole fields inside stored beam chamber as well. The designed septum magnet deflects the injected electron beam by 89 mrad with a ring energy of 6 GeV. The stored beam chamber has an 8 mm x 6 mm super-ellipsoidal aperture. The magnet is straight; however, it is tilted in yaw, roll, and pitch from the stored beam cham-ber to meet the on axis swap out injection requirements for the APS-U lattice.
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Submitted 19 April, 2017;
originally announced April 2017.
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Scalability study of solid xenon
Authors:
J. Yoo,
H. Cease,
W. F. Jaskierny,
D. Markley,
R. B. Pahlka,
D. Balakishiyeva,
T. Saab,
M. Filipenko
Abstract:
We report a demonstration of the scalability of optically transparent xenon in the solid phase for use as a particle detector above a kilogram scale. We employed a cryostat cooled by liquid nitrogen combined with a xenon purification and chiller system. A modified {\it Bridgeman's technique} reproduces a large scale optically transparent solid xenon.
We report a demonstration of the scalability of optically transparent xenon in the solid phase for use as a particle detector above a kilogram scale. We employed a cryostat cooled by liquid nitrogen combined with a xenon purification and chiller system. A modified {\it Bridgeman's technique} reproduces a large scale optically transparent solid xenon.
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Submitted 24 August, 2015;
originally announced August 2015.
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Scalability, scintillation readout and charge drift in a kilogram scale solid xenon particle detector
Authors:
J. Yoo,
H. Cease,
W. F. Jaskierny,
D. Markley,
R. B. Pahlka,
D. Balakishiyeva,
T. Saab,
M. Filipenko
Abstract:
We report a demonstration of the scalability of optically transparent xenon in the solid phase for use as a particle detector above a kilogram scale. We employ a liquid nitrogen cooled cryostat combined with a xenon purification and chiller system to measure the scintillation light output and electron drift speed from both the solid and liquid phases of xenon. Scintillation light output from seale…
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We report a demonstration of the scalability of optically transparent xenon in the solid phase for use as a particle detector above a kilogram scale. We employ a liquid nitrogen cooled cryostat combined with a xenon purification and chiller system to measure the scintillation light output and electron drift speed from both the solid and liquid phases of xenon. Scintillation light output from sealed radioactive sources is measured by a set of high quantum efficiency photomultiplier tubes suitable for cryogenic applications. We observed a reduced amount of photons in solid phase compared to that in liquid phase. We used a conventional time projection chamber system to measure the electron drift time in a kilogram of solid xenon and observed faster electron drift speed in the solid phase xenon compared to that in the liquid phase.
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Submitted 23 October, 2014;
originally announced October 2014.
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nuSTORM - Neutrinos from STORed Muons: Proposal to the Fermilab PAC
Authors:
D. Adey,
S. K. Agarwalla,
C. M. Ankenbrandt,
R. Asfandiyarov,
J. J. Back,
G. Barker,
E. Baussan,
R. Bayes,
S. Bhadra,
V. Blackmore,
A. Blondel,
S. A. Bogacz,
C. Booth,
S. B. Boyd,
A. Bravar,
S. J. Brice,
A. D. Bross,
F. Cadoux,
H. Cease,
A. Cervera,
J. Cobb,
D. Colling,
P. Coloma,
L. Coney,
A. Dobbs
, et al. (88 additional authors not shown)
Abstract:
The nuSTORM facility has been designed to deliver beams of electron neutrinos and muon neutrinos (and their anti-particles) from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum acceptance of 10%. The facility is unique in that it will: 1. Allow searches for sterile neutrinos of exquisite sensitivity to be carried out; 2. Serve future long- and short-baseline neu…
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The nuSTORM facility has been designed to deliver beams of electron neutrinos and muon neutrinos (and their anti-particles) from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum acceptance of 10%. The facility is unique in that it will: 1. Allow searches for sterile neutrinos of exquisite sensitivity to be carried out; 2. Serve future long- and short-baseline neutrino-oscillation programs by providing definitive measurements of electron neutrino and muon neutrino scattering cross sections off nuclei with percent-level precision; and 3. Constitutes the crucial first step in the development of muon accelerators as a powerful new technique for particle physics. The document describes the facility in detail and demonstrates its physics capabilities. This document was submitted to the Fermilab Physics Advisory Committee in consideration for Stage I approval.
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Submitted 31 July, 2013;
originally announced August 2013.
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Neutrinos from Stored Muons nuSTORM: Expression of Interest
Authors:
D. Adey,
S. K. Agarwalla,
C. M. Ankenbrandt,
R. Asfandiyarov,
J. J. Back,
G. Barker,
E. Baussan,
R. Bayes,
S. Bhadra,
V. Blackmore,
A. Blondel,
S. A. Bogacz,
C. Booth,
S. B. Boyd,
A. Bravar,
S. J. Brice,
A. D. Bross,
F. Cadoux,
H. Cease,
A. Cervera,
J. Cobb,
D. Colling,
L. Coney,
A. Dobbs,
J. Dobson
, et al. (84 additional authors not shown)
Abstract:
The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum spread of 10%. The facility is unique in that it will: serve the future long- and short-baseline neutrino-oscillation programmes by providing definitive measurements of electron-neutrino- and muon-neutrino-nucleus cross sect…
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The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum spread of 10%. The facility is unique in that it will: serve the future long- and short-baseline neutrino-oscillation programmes by providing definitive measurements of electron-neutrino- and muon-neutrino-nucleus cross sections with percent-level precision; allow searches for sterile neutrinos of exquisite sensitivity to be carried out; and constitute the essential first step in the incremental development of muon accelerators as a powerful new technique for particle physics.
Of the world's proton-accelerator laboratories, only CERN and FNAL have the infrastructure required to mount nuSTORM. Since no siting decision has yet been taken, the purpose of this Expression of Interest (EoI) is to request the resources required to: investigate in detail how nuSTORM could be implemented at CERN; and develop options for decisive European contributions to the nuSTORM facility and experimental programme wherever the facility is sited.
The EoI defines a two-year programme culminating in the delivery of a Technical Design Report.
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Submitted 7 May, 2013;
originally announced May 2013.
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nuSTORM: Neutrinos from STORed Muons
Authors:
P. Kyberd,
D. R. Smith,
L. Coney,
S. Pascoli,
C. Ankenbrandt,
S. J. Brice,
A. D. Bross,
H. Cease,
J. Kopp,
N. Mokhov,
J. Morfin,
D. Neuffer,
M. Popovic,
P. Rubinov,
S. Striganov,
A. Blondel,
A. Bravar,
E. Noah,
R. Bayes,
F. J. P. Soler,
A. Dobbs,
K. Long,
J. Pasternak,
E. Santos,
M. O. Wascko
, et al. (13 additional authors not shown)
Abstract:
The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly give tantalizing hints of new physics. Models beyond the neutrino-SM have been developed to explain these results and involve one or more additional neutrinos that are non-interacting or "sterile." Neutrino beams produced from the decay of muons in a racetrack-like decay ring provide a power…
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The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly give tantalizing hints of new physics. Models beyond the neutrino-SM have been developed to explain these results and involve one or more additional neutrinos that are non-interacting or "sterile." Neutrino beams produced from the decay of muons in a racetrack-like decay ring provide a powerful way to study this potential new physics. In this Letter of Intent, we describe a facility, nuSTORM, "Neutrinos from STORed Muons," and an appropriate far detector for neutrino oscillation searches at short baseline. We present sensitivity plots that indicated that this experimental approach can provide over 10 sigma confirmation or rejection of the LSND/MinBooNE results. In addition we indicate how the facility can be used to make precision neutrino interaction cross section measurements important to the next generation of long-baseline neutrino oscillation experiments.
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Submitted 1 June, 2012;
originally announced June 2012.
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The D0 Silicon Microstrip Tracker
Authors:
S. N. Ahmed,
R. Angstadt,
M. Aoki,
B. Åsman,
S. Austin,
L. Bagby,
E. Barberis,
P. Baringer,
A. Bean,
A. Bischoff,
F. Blekman,
T. A. Bolton,
C. Boswell,
M. Bowden,
F. Browning,
D. Buchholz,
S. Burdin,
D. Butler,
H. Cease,
S. Choi,
A. R. Clark,
J. Clutter,
A. Cooper,
W. E. Cooper,
M. Corcoran
, et al. (109 additional authors not shown)
Abstract:
This paper describes the mechanical design, the readout chain, the production, testing and the installation of the Silicon Microstrip Tracker of the D0 experiment at the Fermilab Tevatron collider. In addition, description of the performance of the detector during the experiment data collection between 2001 and 2010 is provided.
This paper describes the mechanical design, the readout chain, the production, testing and the installation of the Silicon Microstrip Tracker of the D0 experiment at the Fermilab Tevatron collider. In addition, description of the performance of the detector during the experiment data collection between 2001 and 2010 is provided.
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Submitted 5 May, 2010;
originally announced May 2010.