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1. Evidence of antineutrinos from distant reactors using pure water at SNO

Author

Collaboration, SNO+, Allega, A., Anderson, M. R., Andringa, S., Antunes, J., Askins, M., Auty, D. J., Bacon, A., Barros, N., Barao, F., Bayes, R., Beier, E. W., Bezerra, T. S., Bialek, A., Biller, S. D., Blucher, E., Caden, E., Callaghan, E. J., Cheng, S., Chen, M., Cleveland, B., Cookman, D., Corning, J., Cox, M. A., Dehghani, R., Deloye, J., Deluce, C., Depatie, M. M., Dittmer, J., Dixon, K. H., Di Lodovico, F., Falk, E., Fatemighomi, N., Ford, R., Frankiewicz, K., Gaur, A., Gonzalez-Reina, O. I., Gooding, D., Grant, C., Grove, J., Hallin, A. L., Hallman, D., Heintzelman, W. J., Helmer, R. L., Hu, J., Hunt-Stokes, R., Hussain, S. M. A., Inacio, A. S., Jillings, C. J., Kaluzienski, S., Kaptanoglu, T., Khaghani, P., Khan, H., Klein, J. R., Kormos, L. L., Krar, B., Kraus, C., Krauss, C. B., Kroupova, T., Lam, I., Land, B. J., Lawson, I., Lebanowski, L., Lee, J., Lefebvre, C., Lidgard, J., Lin, Y. H., Lozza, V., Luo, M., Maio, A., Manecki, S., Maneira, J., Martin, R. D., McCauley, N., McDonald, A. B., Mills, C., Morton-Blake, I., Naugle, S., Nolan, L. J., O'Keeffe, H. M., Gann, G. D. Orebi, Page, J., Parker, W., Paton, J., Peeters, S. J. M., Pickard, L., Ravi, P., Reichold, A., Riccetto, S., Richardson, R., Rigan, M., Rose, J., Rosero, R., Rumleskie, J., Semenec, I., Skensved, P., Smiley, M., Svoboda, R., Tam, B., Tseng, J., Turner, E., Valder, S., Virtue, C. J., Vazquez-Jauregui, E., Wang, J., Ward, M., Wilson, J. R., Wilson, J. D., Wright, A., Yanez, J. P., Yang, S., Yeh, M., Yu, S., Zhang, Y., Zuber, K., Zummo, A., and Collaboration, The SNO +

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, General Physics and Astronomy, Nuclear Experiment (nucl-ex), Nuclear Experiment, High Energy Physics - Experiment
Abstract

The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240~km away in Ontario, Canada. This analysis uses events with energies lower than in any previous analysis with a large water Cherenkov detector. Two analytical methods are used to distinguish reactor antineutrinos from background events in 190 days of data and yield consistent evidence for antineutrinos with a combined significance of 3.5$\sigma$., Comment: v2: add missing author, add link to supplemental material v3: minor updates to match PRL publication

Published
2023
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2. Multiple Coulomb Scattering of muons in Lithium Hydride

Author

Bogomilov, M., Tsenov, R., Vankova-Kirilova, G., Song, Y.P., Tang, J.Y., Li, Z.H., Bertoni, R., Bonesini, M., Chignoli, F., Mazza, R., Palladino, V., de Bari, A., Orestano, D., Tortora, L., Kuno, Y., Sakamoto, H., Sato, A., Ishimoto, S., Chung, M., Sung, C.K., Filthaut, F., Fedorov, M., Jokovic, D., Maletic, D., Savic, M., Jovancevic, N., Nikolov, J., Vretenar, M., Ramberger, S., Asfandiyarov, R., Blondel, A., Drielsma, F., Karadzhov, Y., Charnley, G., Collomb, N., Dumbell, K., Gallagher, A., Grant, A., Griffiths, S., Hartnett, T., Martlew, B., Moss, A., Muir, A., Mullacrane, I., Oates, A., Owens, P., Stokes, G., Warburton, P., White, C., Adams, D., Bayliss, V., Boehm, J., Bradshaw, T.W., Brown, C., Courthold, M., Govans, J., Hills, M., Lagrange, J.-B., Macwaters, C., Nichols, A., Preece, R., Ricciardi, S., Rogers, C., Stanley, T., Tarrant, J., Tucker, M., Watson, S., Wilson, A., Bayes, R., Nugent, J.C., Soler, F.J.P., Gamet, R., Cooke, P., Blackmore, V.J., Colling, D., Dobbs, A., Dornan, P., Franchini, P., Hunt, C., Jurj, P.B., Kurup, A., Long, K., Martyniak, J., Middleton, S., Pasternak, J., Uchida, M.A., Cobb, J.H., Booth, C.N., Hodgson, P., Langlands, J., Overton, E., Pec, V., Smith, P.J., Wilbur, S., Chatzitheodoridis, G.T., Dick, A.J., Ronald, K., Whyte, C.G., Young, A.R., Boyd, S., Greis, J.R., Greishring, J.R., Lord, T., Pidcott, C., Taylor, I., Ellis, M., Gardener, R.B.S., Kyberd, P., Nebrensky, J.J., Palmer, M., Witte, H., Adey, D., Bross, A.D., Bowring, D., Hanlet, P., Liu, A., Neuffer, D., Popovic, M., Rubinov, P., DeMello, A., Gourlay, S., Lambert, A., Li, D., Luo, T., Prestemon, S., Virostek, S., Freemire, B., Kaplan, D.M., Mohayai, T.A., Rajaram, D., Snopok, P., Torun, Y., Cremaldi, L.M., Sanders, D.A., Summers, D.J., Coney, L.R., Hanson, G.G., and Heidt, C.

Subjects
polarization in interactions & scattering, Physics - Instrumentation and Detectors, Astronomy, muons, beam optics transport, neutrinos, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), single-particle dynamics, particles & fields, High Energy Physics - Experiment, lattices in beam optics, High Energy Physics - Experiment (hep-ex), accelerators & beams, Detectors and Experimental Techniques, beam code development & simulation techniques, Particle Physics - Experiment
Abstract

Multiple Coulomb Scattering (MCS) is a well known phenomenon occurring when charged particles traverse materials. Measurements of muons traversing low $Z$ materials made in the MuScat experiment showed that theoretical models and simulation codes, such as GEANT4 (v7.0), over-estimated the scattering. The Muon Ionization Cooling Experiment (MICE) measured the cooling of a muon beam traversing a liquid hydrogen or lithium hydride (LiH) energy absorber as part of a programme to develop muon accelerator facilities, such as a Neutrino Factory or a Muon Collider. The energy loss and MCS that occur in the absorber material are competing effects that alter the performance of the cooling channel. Therefore measurements of MCS are required in order to validate the simulations used to predict the cooling performance in future accelerator facilities. We report measurements made in the MICE apparatus of MCS using a LiH absorber and muons within the momentum range 160 to 245 MeV/c. The measured RMS scattering width is about 9% smaller than that predicted by the approximate formula proposed by the Particle Data Group. Data at 172, 200 and 240 MeV/c are compared to the GEANT4 (v9.6) default scattering model. These measurements show agreement with this more recent GEANT4 (v9.6) version over the range of incident muon momenta., Comment: 20 pages, 14 figures, journal

Published
2022
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3. Performance of the MICE diagnostic system

Author

The MICE collaboration, Bogomilov, M., Tsenov, R., Vankova-Kirilova, G., Song, Y. P., Tang, J. Y., Li, Z. H., Bertoni, R., Bonesini, M., Chignoli, F., Mazza, R., Palladino, V., de Bari, A., Orestano, D., Tortora, L., Kuno, Y., Sakamoto, H., Sato, A., Ishimoto, S., Chung, M., Sung, C. K., Filthaut, F., Fedorov, M., Jokovic, D., Maletic, D., Savic, M., Jovancevic, N., Nikolov, J., Vretenar, M., Ramberger, S., Asfandiyarov, R., Blondel, A., Drielsma, F., Karadzhov, Y., Charnley, G., Collomb, N., Dumbell, K., Gallagher, A., Grant, A., Griffiths, S., Hartnett, T., Martlew, B., Moss, A., Muir, A., Mullacrane, I., Oates, A., Owens, P., Stokes, G., Warburton, P., White, C., Adams, D., Bayliss, V., Boehm, J., Bradshaw, T. W., Brown, C., Courthold, M., Govans, J., Hills, M., Lagrange, J. -B., Macwaters, C., Nichols, A., Preece, R., Ricciardi, S., Rogers, C., Stanley, T., Tarrant, J., Tucker, M., Watson, S., Wilson, A., Bayes, R., Nugent, J. C., Soler, F. J. P., Gamet, R., Cooke, P., Blackmore, V. J., Colling, D., Dobbs, A., Dornan, P., Franchini, P., Hunt, C., Jurj, P. B., Kurup, A., Long, K., Martyniak, J., Middleton, S., Pasternak, J., Uchida, M. A., Cobb, J. H., Booth, C. N., Hodgson, P., Langlands, J., Overton, E., Pec, V., Smith, P. J., Wilbur, S., Chatzitheodoridis, G. T., Dick, A. J., Ronald, K., Whyte, C. G., Young, A. R., Boyd, S., Greis, J. R., Lord, T., Pidcott, C., Taylor, I., Ellis, M., Gardener, R. B. S., Kyberd, P., Nebrensky, J. J., Palmer, M., Witte, H., Adey, D., Bross, A. D., Bowring, D., Hanlet, P., Liu, A., Neuffer, D., Popovic, M., Rubinov, P., DeMello, A., Gourlay, S., Lambert, A., Li, D., Luo, T., Prestemon, S., Virostek, S., Freemire, B., Kaplan, D. M., Mohayai, T. A., Rajaram, D., Snopok, P., Torun, Y., Cremaldi, L. M., Sanders, D. A., Summers, D. J., Coney, L. R., Hanson, G. G., Heidt, C., and Science and Technology Facilities Council (STFC)

Subjects
Accelerator Physics (physics.acc-ph), Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, 09 Engineering, Nuclear physics, 0103 physical sciences, Ionization cooling, 010306 general physics, Instrumentation, Mathematical Physics, Liquid hydrogen, QC, physics.acc-ph, Physics, 02 Physical Sciences, Muon, 010308 nuclear & particles physics, Nuclear & Particles Physics, Accelerators and Storage Rings, Muon collider, Physics::Accelerator Physics, Neutrino Factory, High Energy Physics::Experiment, Physics - Accelerator Physics, International Muon Ionization Cooling Experiment, Neutrino, Beam (structure)
Abstract

Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams of a neutrino factory and for multi-TeV lepton-antilepton collisions at a muon collider. The international Muon Ionization Cooling Experiment (MICE) has demonstrated the principle of ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. This paper documents the performance of the detectors used in MICE to measure the muon-beam parameters, and the physical properties of the liquid hydrogen energy absorber during running., 27 pages, 18 figures

Published
2021

4. First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment

Author

The MICE Collaboration, Adams, D., Adey, D., Asfandiyarov, R., Barber, G., de Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V., Blondel, A., Boehm, J., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S., Bradshaw, T. W., Bross, A. D., Brown, C., Coney, L., Charnley, G., Chatzitheodoridis, G. T., Chignoli, F., Chung, M., Cline, D., Cobb, J. H., Colling, D., Collomb, N., Cooke, P., Courthold, M., Cremaldi, L. M., DeMello, A., Dick, A. J., Dobbs, A., Dornan, P., Drielsma, F., Dumbell, K., Ellis, M., Filthaut, F., Franchini, P., Freemire, B., Gallagher, A., Gamet, R., Gardener, R. B. S., Gourlay, S., Grant, A., Greis, J. R., Griffiths, S., Hanlet, P., Hanson, G. G., Hartnett, T., Heidt, C., Hodgson, P., Hunt, C., Ishimoto, S., Jokovic, D., Jurj, P. B., Kaplan, D. M., Karadzhov, Y., Klier, A., Kuno, Y., Kurup, A., Kyberd, P., Lagrange, J-B., Langlands, J., Lau, W., Li, D., Li, Z., Liu, A., Long, K., Lord, T., Macwaters, C., Maletic, D., Martlew, B., Martyniak, J., Mazza, R., Middleton, S., Mohayai, T. A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nugent, J. C., Oates, A., Orestano, D., Overton, E., Owens, P., Palladino, V., Palmer, M., Pasternak, J., Pec, V., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ricciardi, S., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Sakamoto, H., Sanders, D. A., Sato, A., Savic, M., Snopok, P., Smith, P. J., Soler, F. J. P., Song, Y., Stanley, T., Stokes, G., Suezaki, V., Summers, D. J., Sung, C. K., Tang, J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tucker, M., Uchida, M. A., Virostek, S., Vankova-Kirilova, G., Warburton, P., Wilbur, S., Wilson, A., Witte, H., White, C., Whyte, C. G., Yang, X., Young, A. R., Zisman, M., Adams, D., Adey, D., Asfandiyarov, R., Barber, G., de Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V., Blondel, A., Boehm, J., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S., Bradshaw, T. W., Bross, A. D., Brown, C., Charnley, G., Chatzitheodoridis, G. T., Chignoli, F., Chung, M., Cline, D., Cobb, J. H., Colling, D., Collomb, N., Cooke, P., Courthold, M., Cremaldi, L. M., Demello, A., Dick, A. J., Dobbs, A., Dornan, P., Drielsma, F., Dumbell, K., Ellis, M., Filthaut, F., Franchini, P., Freemire, B., Gallagher, A., Gamet, R., Gardener, R. B. S., Gourlay, S., Grant, A., Greis, J. R., Griffiths, S., Hanlet, P., Hanson, G. G., Hartnett, T., Heidt, C., Hodgson, P., Hunt, C., Ishimoto, S., Jokovic, D., Jurj, P. B., Kaplan, D. M., Karadzhov, Y., Klier, A., Kuno, Y., Kurup, A., Kyberd, P., Lagrange, J. -B., Langlands, J., Lau, W., Li, D., Li, Z., Liu, A., Long, K., Lord, T., Macwaters, C., Maletic, D., Martlew, B., Martyniak, J., Mazza, R., Middleton, S., Mohayai, T. A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nugent, J. C., Oates, A., Orestano, D., Overton, E., Owens, P., Palladino, V., Palmer, M., Pasternak, J., Pec, V., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ricciardi, S., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Sakamoto, H., Sanders, D. A., Sato, A., Savic, M., Snopok, P., Smith, P. J., Soler, F. J. P., Song, Y., Stanley, T., Stokes, G., Suezaki, V., Summers, D. J., Sung, C. K., Tang, J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tucker, M., Uchida, M. A., Virostek, S., Vankova-Kirilova, G., Warburton, P., Wilbur, S., Wilson, A., Witte, H., White, C., Whyte, C. G., Yang, X., Young, A. R., Zisman, M., Science and Technology Facilities Council (STFC), Imperial College Trust, Council for the Central Laboratory of the Research Councils' (CCLRC), Asfandiyarov, Ruslan, Blondel, Alain, Drielsma, François, and Karadzhov, Yordan Ivanov

Subjects
Accelerator Physics (physics.acc-ph), Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, FOS: Physical sciences, lcsh:Astrophysics, ddc:500.2, Electron, 01 natural sciences, Physics, Particles & Fields, Nuclear physics, Momentum, Pion, DESIGN, 0103 physical sciences, lcsh:QB460-466, Ionization cooling, Thermal emittance, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, High Energy Physics, 010306 general physics, physics.ins-det, 0206 Quantum Physics, Engineering (miscellaneous), QC, physics.acc-ph, Physics, Science & Technology, Muon, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Muon collider, Physical Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Experimental High Energy Physics, lcsh:QC770-798, Physics::Accelerator Physics, Physics - Accelerator Physics, Neutrino Factory, High Energy Physics::Experiment
Abstract

The Muon Ionization Cooling Experiment (MICE) collaboration seeks to demonstrate the feasibility of ionization cooling, the technique by which it is proposed to cool the muon beam at a future neutrino factory or muon collider. The emittance is measured from an ensemble of muons assembled from those that pass through the experiment. A pure muon ensemble is selected using a particle identification system that can reject efficiently both pions and electrons. The position and momentum of each muon are measured using a high-precision scintillating-fibre tracker in a 4 T solenoidal magnetic field. This paper presents the techniques used to reconstruct the phase-space distributions in the upstream tracking detector and reports the first particle by-article measurement of the emittance of the MICE Muon Beam as a function of muon-beam momentum. Science and Technology Facilities Council (UK)

Published
2019

5. The SNO+ Experiment

Author

Collaboration, SNO+, Albanese, V., Alves, R., Anderson, M. R., Andringa, S., Anselmo, L., Arushanova, E., Asahi, S., Askins, M., Auty, D. J., Back, A. R., Back, S., Bar��o, F., Barnard, Z., Barr, A., Barros, N., Bartlett, D., Bayes, R., Beaudoin, C., Beier, E. W., Berardi, G., Bialek, A., Biller, S. D., Blucher, E., Bonventre, R., Boulay, M., Braid, D., Caden, E., Callaghan, E. J., Caravaca, J., Carvalho, J., Cavalli, L., Chauhan, D., Chen, M., Chkvorets, O., Clark, K. J., Cleveland, B., Connors, C., Cookman, D., Coulter, I. T., Cox, M. A., Cressy, D., Dai, X., Darrach, C., Davis-Purcell, B., Deluce, C., Depatie, M. M., Descamps, F., Di Lodovico, F., Dittmer, J., Doxtator, A., Duhaime, N., Duncan, F., Dunger, J., Earle, A. D., Fabris, D., Falk, E., Farrugia, A., Fatemighomi, N., Felber, C., Fischer, V., Fletcher, E., Ford, R., Frankiewicz, K., Gagnon, N., Gaur, A., Gauthier, J., Gibson-Foster, A., Gilje, K., Gonz��lez-Reina, O. I., Gooding, D., Gorel, P., Graham, K., Grant, C., Grove, J., Grullon, S., Guillian, E., Hall, S., Hallin, A. L., Hallman, D., Hans, S., Hartnell, J., Harvey, P., Hedayatipour, M., Heintzelman, W. J., Heise, J., Helmer, R. L., Hodak, B., Hodak, M., Hood, M., Horne, D., Hreljac, B., Hu, J., Hussain, S. M. A., Iida, T., In��cio, A. S., Jackson, C. M., Jelley, N. A., Jillings, C. J., Jones, C., Jones, P. G., Kamdin, K., Kaptanoglu, T., Kaspar, J., Keeter, K., Kefelian, C., Khaghani, P., Kippenbrock, L., Klein, J. R., Knapik, R., Kofron, J., Kormos, L. L., Korte, S., Krar, B., Kraus, C., Krauss, C. B., Kroupov��, T., Labe, K., Lafleur, F., Lam, I., Lan, C., Land, B. J., Lane, R., Langrock, S., Larochelle, P., Larose, S., LaTorre, A., Lawson, I., Lebanowski, L., Lefeuvre, G. M., Leming, E. J., Li, A., Li, O., Lidgard, J., Liggins, B., Liimatainen, P., Lin, Y. H., Liu, X., Liu, Y., Lozza, V., Luo, M., Maguire, S., Maio, A., Majumdar, K., Manecki, S., Maneira, J., Martin, R. D., Marzec, E., Mastbaum, A., Mathewson, A., McCauley, N., McDonald, A. B., McFarlane, K., Mekarski, P., Meyer, M., Miller, C., Mills, C., Mlejnek, M., Mony, E., Morissette, B., Morton-Blake, I., Mottram, M. J., Nae, S., Nirkko, M., Nolan, L. J., Novikov, V. M., O'Keeffe, H. M., O'Sullivan, E., Gann, G. D. Orebi, Parnell, M. J., Paton, J., Peeters, S. J. M., Pershing, T., Petriw, Z., Petzoldt, J., Pickard, L., Pracsovics, D., Prior, G., Prouty, J. C., Quirk, S., Read, S., Reichold, A., Riccetto, S., Richardson, R., Rigan, M., Ritchie, I., Robertson, A., Robertson, B. C., Rose, J., Rosero, R., Rost, P. M., Rumleskie, J., Schumaker, M. A., Schwendener, M. H., Scislowski, D., Secrest, J., Seddighin, M., Segui, L., Seibert, S., Semenec, I., Shaker, F., Shantz, T., Sharma, M. K., Shokair, T. M., Sibley, L., Sinclair, J. R., Singh, K., Skensved, P., Smiley, M., Sonley, T., S��rensen, A., St-Amant, M., Stainforth, R., Stankiewicz, S., Strait, M., Stringer, M. I., Stripay, A., Svoboda, R., Tacchino, S., Tam, B., Tanguay, C., Tatar, J., Tian, L., Tolich, N., Tseng, J., Tseung, H. W. C., Turner, E., Van Berg, R., V��zquez-J��uregui, E., Veinot, J. G. C., Virtue, C. J., von Krosigk, B., Walker, J. M. G., Walker, M., Wallig, J., Walton, S. C., Wang, J., Ward, M., Wasalski, O., Waterfield, J., Weigand, J. J., White, R. F., Wilson, J. R., Winchester, T. J., Woosaree, P., Wright, A., Yanez, J. P., Yeh, M., Zhang, T., Zhang, Y., Zhao, T., Zuber, K., and Zummo, A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The SNO+ experiment is located 2 km underground at SNOLAB in Sudbury, Canada. A low background search for neutrinoless double beta ($0������$) decay will be conducted using 780 tonnes of liquid scintillator loaded with 3.9 tonnes of natural tellurium, corresponding to 1.3 tonnes of $^{130}$Te. This paper provides a general overview of the SNO+ experiment, including detector design, construction of process plants, commissioning efforts, electronics upgrades, data acquisition systems, and calibration techniques. The SNO+ collaboration is reusing the acrylic vessel, PMT array, and electronics of the SNO detector, having made a number of experimental upgrades and essential adaptations for use with the liquid scintillator. With low backgrounds and a low energy threshold, the SNO+ collaboration will also pursue a rich physics program beyond the search for $0������$ decay, including studies of geo- and reactor antineutrinos, supernova and solar neutrinos, and exotic physics such as the search for invisible nucleon decay. The SNO+ approach to the search for $0������$ decay is scalable: a future phase with high $^{130}$Te-loading is envisioned to probe an effective Majorana mass in the inverted mass ordering region., 61 pages, 23 figures, 4 tables

Published
2021
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6. Search for invisible modes of nucleon decay in water with the SNO+ detector

Author

Collaboration, SNO+, Anderson, M., Andringa, S., Arushanova, E., Asahi, S., Askins, M., Auty, D. J., Back, A. R., Barnard, Z., Barros, N., Bartlett, D., Bar��o, F., Bayes, R., Beier, E. W., Bialek, A., Biller, S. D., Blucher, E., Bonventre, R., Boulay, M., Braid, D., Caden, E., Callaghan, E. J., Caravaca, J., Carvalho, J., Cavalli, L., Chauhan, D., Chen, M., Chkvorets, O., Clark, K. J., Cleveland, B., Connors, C., Coulter, I. T., Cressy, D., Dai, X., Darrach, C., Davis-Purcell, B., Depatie, M. M., Descamps, F., Di Lodovico, F., Duhaime, N., Duncan, F., Dunger, J., Falk, E., Fatemighomi, N., Fischer, V., Fletcher, E., Ford, R., Gagnon, N., Gilje, K., Gorel, P., Graham, K., Grant, C., Grove, J., Grullon, S., Guillian, E., Hallin, A. L., Hallman, D., Hans, S., Hartnell, J., Harvey, P., Hedayatipour, M., Heintzelman, W. J., Heise, J., Helmer, R. L., Hern��ndez-Hern��ndez, J. L., Hreljac, B., Hu, J., Iida, T., In��cio, A. S., Jackson, C. M., Jelley, N. A., Jillings, C. J., Jones, C., Jones, P. G., Kamdin, K., Kaptanoglu, T., Kaspar, J., Keeter, K., Kefelian, C., Khaghani, P., Kippenbrock, L., Klein, J. R., Knapik, R., Kofron, J., Kormos, L. L., Krar, B., Kraus, C., Krauss, C. B., Kroupova, T., Labe, K., Lam, I., Lan, C., Land, B. J., Lane, R., Langrock, S., LaTorre, A., Lawson, I., Lebanowski, L., Lefeuvre, G. M., Leming, E. J., Li, A., Lidgard, J., Liggins, B., Liu, X., Liu, Y., Lozza, V., Luo, M., Maguire, S., Maio, A., Majumdar, K., Manecki, S., Maneira, J., Martin, R. D., Marzec, E., Mastbaum, A., McCauley, N., McDonald, A. B., McMillan, J. E., Mekarski, P., Meyer, M., Miller, C., Mlejnek, M., Mony, E., Morton-Blake, I., Mottram, M. J., Nae, S., Nirkko, M., Novikov, V., O'Keeffe, H. M., O'Sullivan, E., Gann, G. D. Orebi, Parnell, M. J., Paton, J., Peeters, S. J. M., Pershing, T., Petriw, Z., Pickard, L., Pracsovics, D., Prior, G., Prouty, J. C., Quirk, S., Reichold, A., Richardson, R., Rigan, M., Robertson, A., Rose, J., Rosero, R., Rost, P. M., Rumleskie, J., Schumaker, M. A., Schwendener, M. H., Scislowski, D., Secrest, J., Seddighin, M., Segui, L., Seibert, S., Semenec, I., Shantz, T., Shokair, T. M., Sibley, L., Sinclair, J. R., Singh, K., Skensved, P., Sonley, T., Stainforth, R., Strait, M., Stringer, M. I., Svoboda, R., S��rensen, A., Tam, B., Tatar, J., Tian, L., Tolich, N., Tseng, J., Tseung, H. W. C., Turner, E., Van Berg, R., Veinot, J. G. C., Virtue, C. J., von Krosigk, B., V��zquez-J��uregui, E., Walker, J. M. G., Walker, M., Wang, J., Wasalski, O., Waterfield, J., Weigand, J. J., White, R. F., Wilson, J. R., Winchester, T. J., Woosaree, P., Wright, A., Yanez, J. P., Yeh, M., Zhao, T., Zuber, K., and Zummo, A.

Subjects
Physics, Physics - Instrumentation and Detectors, Proton, 010308 nuclear & particles physics, Gamma ray, Phase (waves), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Orders of magnitude (time), Excited state, 0103 physical sciences, Bound state, Neutron, Atomic physics, 010306 general physics, Nucleon, QC
Abstract

This paper reports results from a search for nucleon decay through 'invisible' modes, where no visible energy is directly deposited during the decay itself, during the initial water phase of SNO+. However, such decays within the oxygen nucleus would produce an excited daughter that would subsequently de-excite, often emitting detectable gamma rays. A search for such gamma rays yields limits of $2.5 \times 10^{29}$ y at 90% Bayesian credibility level (with a prior uniform in rate) for the partial lifetime of the neutron, and $3.6 \times 10^{29}$ y for the partial lifetime of the proton, the latter a 70% improvement on the previous limit from SNO. We also present partial lifetime limits for invisible dinucleon modes of $1.3\times 10^{28}$ y for $nn$, $2.6\times 10^{28}$ y for $pn$ and $4.7\times 10^{28}$ y for $pp$, an improvement over existing limits by close to three orders of magnitude for the latter two., Comment: 13 pages, 6 figures

Published
2019
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7. Measurement of the $^8$B Solar Neutrino Flux in SNO+ with Very Low Backgrounds

Author

Collaboration, The SNO+, Anderson, M., Andringa, S., Asahi, S., Askins, M., Auty, D. J., Barros, N., Bartlett, D., Barão, F., Bayes, R., Beier, E. W., Bialek, A., Biller, S. D., Blucher, E., Bonventre, R., Boulay, M., Caden, E., Callaghan, E. J., Caravaca, J., Chauhan, D., Chen, M., Chkvorets, O., Cleveland, B., Connors, C., Coulter, I. T., Depatie, M. M., Di Lodovico, F., Duncan, F., Dunger, J., Falk, E., Fischer, V., Fletcher, E., Ford, R., Gagnon, N., Gilje, K., Grant, C., Grove, J., Hallin, A. L., Hallman, D., Hans, S., Hartnell, J., Heintzelman, W. J., Helmer, R. L., Hernández-Hernández, J. L., Hreljac, B., Hu, J., Inácio, A. S., Jillings, C. J., Kaptanoglu, T., Khaghani, P., Klein, J. R., Knapik, R., Kormos, L. L., Krar, B., Kraus, C., Krauss, C. B., Kroupova, T., Lam, I., Land, B. J., Lane, R., LaTorre, A., Lawson, I., Lebanowski, L., Leming, E. J., Li, A., Lidgard, J., Liggins, B., Liu, Y., Lozza, V., Luo, M., Maguire, S., Maio, A., Manecki, S., Maneira, J., Martin, R. D., Marzec, E., Mastbaum, A., McCauley, N., McDonald, A. B., Mekarski, P., Meyer, M., Mlejnek, M., Morton-Blake, I., Nae, S., Nirkko, M., O'Keeffe, H. M., Gann, G. D. Orebi, Parnell, M. J., Paton, J., Peeters, S. J. M., Pershing, T., Pickard, L., Pracsovics, D., Prior, G., Reichold, A., Richardson, R., Rigan, M., Rose, J., Rosero, R., Rumleskie, J., Semenec, I., Singh, K., Skensved, P., Stringer, M. I., Svoboda, R., Tam, B., Tian, L., Tseng, J., Turner, E., Van Berg, R., Veinot, J. G. C., Virtue, C. J., Vázquez-Jáuregui, E., Wang, J., Weigand, J. J., Wilson, J. R., Woosaree, P., Wright, A., Yanez, J. P., Yeh, M., Zuber, K., and Zummo, A.

Subjects
High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, High Energy Physics - Experiment
Abstract

A measurement of the $^8$B solar neutrino flux has been made using a 69.2 kt-day dataset acquired with the SNO+ detector during its water commissioning phase. At energies above 6 MeV the dataset is an extremely pure sample of solar neutrino elastic scattering events, owing primarily to the detector's deep location, allowing an accurate measurement with relatively little exposure. In that energy region the best fit background rate is $0.25^{+0.09}_{-0.07}$ events/kt-day, significantly lower than the measured solar neutrino event rate in that energy range, which is $1.03^{+0.13}_{-0.12}$ events/kt-day. Also using data below this threshold, down to 5 MeV, fits of the solar neutrino event direction yielded an observed flux of $2.53^{+0.31}_{-0.28}$(stat.)$^{+0.13}_{-0.10}$(syst.)$\times10^6$ cm$^{-2}$s$^{-1}$, assuming no neutrino oscillations. This rate is consistent with matter enhanced neutrino oscillations and measurements from other experiments., Comment: 7 pages, 4 figures

Published
2018
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8. Pion contamination in the MICE muon beam

Author

Adams, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Barber, G., Barclay, P., de Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V.J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C.N., Bowring, D., Boyd, S., Brashaw, T.W., Bravar, U., Bross, A.D., Capponi, M., Carlisle, T., Cecchet, G., Charnley, C., Chignoli, F., Cline, D., Cobb, J.H., Colling, G., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L.M., DeMello, A., Dick, A., Dobbs, A., Dornan, P., Drews, M., Drielsma, F., Filthaut, F., Fitzpatrick, T., Franchini, P., Francis, V., Fry, L., Gallagher, A., Gamet, R., Gardener, R., Gourlay, S., Grant, A., Greis, J.R., Griffiths, S., Hanlet, P., Hansen, O.M., Hanson, G.G., Hart, T.L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D.M., Karadzhov, Y., Kim, Y.K., Kuno, Y., Kyberd, P., Lagrange, J-B., Langlands, J., Lau, W., Leonova, M., Li, D., Lintern, A., Littlefield, M., Long, K., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Mazza, R., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J.J., Neuffer, D., Nichols, A., Nicholson, R., Nugent, J.C., Oates, A., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M.A., Ricciardi, S., Roberts, T.J., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Rucinski, P., Sakamato, H., Sanders, D.A., Santos, E., Savidge, T., Smith, P.J., Snopok, P., Soler, F.J.P., Speirs, D., Stanley, T., Stokes, G., Summers, D.J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C.D., Uchida, M.A., Vankova-Kirilova, G., Virostek, S., Vretenar, M., Warburton, P., Watson, S., White, C., Whyte, C.G., Wilson, A., Winter, M., Yang, X., Young, A., Zisman, M., Collaboration, MICE, Science and Technology Facilities Council (STFC), Adams, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Barber, G., Barclay, P., De Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V. J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S., Brashaw, T. W., Bravar, U., Bross, A. D., Capponi, M., Carlisle, T., Cecchet, G., Charnley, C., Chignoli, F., Cline, D., Cobb, J. H., Colling, G., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L. M., Demello, A., Dick, A., Dobbs, A., Dornan, P., Drews, M., Drielsma, F., Filthaut, F., Fitzpatrick, T., Franchini, P., Francis, V., Fry, L., Gallagher, A., Gamet, R., Gardener, R., Gourlay, S., Grant, A., Greis, J. R., Griffiths, S., Hanlet, P., Hansen, O. M., Hanson, G. G., Hart, T. L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D. M., Karadzhov, Y., Kim, Y. K., Kuno, Y., Kyberd, P., Lagrange, J. -B., Langlands, J., Lau, W., Leonova, M., Li, D., Lintern, A., Littlefield, M., Long, K., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Mazza, R., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nicholson, R., Nugent, J. C., Oates, A., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M. A., Ricciardi, S., Roberts, T. J., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Rucinski, P., Sakamato, H., Sanders, D. A., Santos, E., Savidge, T., Smith, P. J., Snopok, P., Soler, F. J. P., Speirs, D., Stanley, T., Stokes, G., Summers, D. J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C. D., Uchida, M. A., Vankova-Kirilova, G., Virostek, S., Vretenar, M., Warburton, P., Watson, S., White, C., Whyte, C. G., Wilson, A., Winter, M., Yang, X., Young, A., and Zisman, M.

Subjects
Technology, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Beam-line instrumentation (beam position and profile monitors, FOS: Physical sciences, Instrumentation for particle accelerators and storage rings-low energy (linear accelerators, cyclotrons, electrostatic accelerators), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, DESIGN, 0103 physical sciences, Ionization cooling, High Energy Physics, Instrumentation for particle accelerators and storage rings - low energy (linear accelerators,cyclotrons, electrostatic accelerators), Physics::Atomic Physics, Detectors and Experimental Techniques, 010306 general physics, Instruments & Instrumentation, Instrumentation, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), beam-intensity monitor, Mathematical Physics, Physics, Beam-line instrumentation (beam position and profile, monitors, beam-intensity monitors, bunch length monitors), Science & Technology, Muon, CONSTRUCTION, 010308 nuclear & particles physics, Bunch length monitors, Instrumentation and Detectors (physics.ins-det), Contamination, Beam-intensity monitors, Nuclear & Particles Physics, Experimental High Energy Physics, Beam-line instrumentation (beam position and profile monitor, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation for particle accelerators and storage rings - low energy (linear accelerators, cyclotrons, electrostatic accelerators), International Muon Ionization Cooling Experiment, Beam (structure)
Abstract

The international Muon Ionization Cooling Experiment (MICE) will perform a systematic investigation of ionization cooling with muon beams of momentum between 140 and 240\,MeV/c at the Rutherford Appleton Laboratory ISIS facility. The measurement of ionization cooling in MICE relies on the selection of a pure sample of muons that traverse the experiment. To make this selection, the MICE Muon Beam is designed to deliver a beam of muons with less than $\sim$1\% contamination. To make the final muon selection, MICE employs a particle-identification (PID) system upstream and downstream of the cooling cell. The PID system includes time-of-flight hodoscopes, threshold-Cherenkov counters and calorimetry. The upper limit for the pion contamination measured in this paper is $f_��< 1.4\%$ at 90\% C.L., including systematic uncertainties. Therefore, the MICE Muon Beam is able to meet the stringent pion-contamination requirements of the study of ionization cooling., 16 pages, 7 figures

Published
2015

9. Design and expected performance of the MICE demonstration of ionization cooling

Author

MICE Collaboration, Bogomilov, M., Tsenov, R., Vankova-Kirilova, G., Song, Y., Tang, J., Li, Z., Bertoni, R., Bonesini, M., Chignoli, F., Mazza, R., Palladino, V., de Bari, A., Cecchet, G., Orestano, D., Tortora, L., Kuno, Y., Ishimoto, S., Filthaut, F., Jokovic, D., Maletic, D., Savic, M., Hansen, O. M., Ramberger, S., Vretenar, M., Asfandiyarov, R., Blondel, A., Drielsma, F., Karadzhov, Y., Charnley, G., Collomb, N., Gallagher, A., Grant, A., Griffiths, S., Hartnett, T., Martlew, B., Moss, A., Muir, A., Mullacrane, I., Oates, A., Owens, P., Stokes, G., Tucker, M., Warburton, P., White, C., Adams, D., Anderson, R. J., Barclay, P., Bayliss, V., Boehm, J., Bradshaw, T. W., Courthold, M., Dumbell, K., Francis, V., Fry, L., Hayler, T., Hills, M., Lintern, A., Macwaters, C., Nichols, A., Preece, R., Ricciardi, S., Rogers, C., Stanley, T., Tarrant, J., Wilson, A., Watson, S., Bayes, R., Nugent, J. C., Soler, F. J. P., Gamet, R., Barber, G., Blackmore, V. J., Colling, D., Dobbs, A., Dornan, P., Hunt, C., Kurup, A., Lagrange, J-B., Long, K., Martyniak, J., Middleton, S., Pasternak, J., Uchida, M. A., Cobb, J. H., Lau, W., Booth, C. N., Hodgson, P., Langlands, J., Overton, E., Robinson, M., Smith, P. J., Wilbur, S., Dick, A. J., Ronald, K., Whyte, C. G., Young, A. R., Boyd, S., Franchini, P., Greis, J. R., Pidcott, C., Taylor, I., Gardener, R. B. S., Kyberd, P., Nebrensky, J. J., Palmer, M., Witte, H., Bross, A. D., Bowring, D., Liu, A., Neuffer, D., Popovic, M., Rubinov, P., DeMello, A., Gourlay, S., Li, D., Prestemon, S., Virostek, S., Freemire, B., Hanlet, P., Kaplan, D. M., Mohayai, T. A., Rajaram, D., Snopok, P., Suezaki, V., Torun, Y., Onel, Y., Cremaldi, L. M., Sanders, D. A., Summers, D. J., Hanson, G. G., and Heidt, C.

Subjects
Accelerator Physics (physics.acc-ph), Physics::Instrumentation and Detectors, Physics::Accelerator Physics, FOS: Physical sciences, Physics - Accelerator Physics, High Energy Physics::Experiment, Physics::Atomic Physics
Abstract

Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams necessary to elucidate the physics of flavour at a neutrino factory and to provide lepton-antilepton collisions at energies of up to several TeV at a muon collider. The international Muon Ionization Cooling Experiment (MICE) aims to demonstrate ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. In an ionization-cooling channel, the muon beam passes through a material in which it loses energy. The energy lost is then replaced using RF cavities. The combined effect of energy loss and re-acceleration is to reduce the transverse emittance of the beam (transverse cooling). A major revision of the scope of the project was carried out over the summer of 2014. The revised experiment can deliver a demonstration of ionization cooling. The design of the cooling demonstration experiment will be described together with its predicted cooling performance., Comment: 21 pages, 10 figures

Published
2017
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10. LBNO-DEMO: Large-scale neutrino detector demonstrators for phased performance assessment in view of a long-baseline oscillation experiment

Author

Agostino, L., Andrieu, B., Asfandiyarov, R., Autiero, D., Bésida, O., Bay, F., Bayes, R., Blebea-Apostu, A. M., Blondel, A., Bogomilov, M., Bolognesi, S., Bordoni, S., Bravar, A., Buizza-Avanzini, M., Cadoux, F., Caiulo, D., Calin, M., Campanelli, M., Cantini, C., Chaussard, L., Chesneanu, D., Colino, N., Crivelli, P., De Bonis, I., Déclais, Y., Dawson, J., De La Taille, C., Sanchez, P. Del Amo, Delbart, A., Di Luise, S., Duchesneau, D., Dulucq, F., Dumarchez, J., Efthymiopoulos, I., Emery, S., Enqvist, T., Epprecht, L., Esanu, T., Franco, D., Friend, M., Galymov, V., Gendotti, A., Giganti, C., Gil-Botella, I., Gomoiu, M. C, Gorodetzky, P., Haesler, A., Hasegawa, T., Horikawa, S., Ieva, M., Jipa, A., Karadzhov, Y., Karpikov, I., Khotjantsev, A., Korzenev, A., Kryn, D., Kudenko, Y., Kuusiniemi, P., Lazanu, I., Levy, J. -M., Loo, K., Lux, T., Maalampi, J., Margineanu, R. M., Marteau, J., Martin, C., Martin-Chassard, G., Mazzucato, E., Mefodiev, A., Mineev, O., Mitrica, B., Murphy, S., Nakadaira, T., Nessi, M., Nikolics, K., Nita, L., Noah, E., Novella, P., Nuijten, G. A., Ovsiannikova, T., Palomares, C., Patzak, T., Pennacchio, E., Periale, L., Pessard, H., Popov, B., Ravonel, M., Rayner, M., Regenfus, C., Ristea, C., Ristea, O., Robert, A., Rubbia, A., Sakashita, K., Sanchez, F., Santorelli, R., Scantamburlo, E., Sergiampietri, F., Sgalaberna, D., Slupecki, M., Soler, F. J. P., Stanca, D. L., Tonazzo, A., Trzaska, W. H., Tsenov, R., Vankova-Kirilova, G., Vannucci, F., Vasseur, G., Verdugo, A., Viant, T., Wu, S., Yershov, N., Zambelli, L., Zito, M., AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and WA105

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], High Energy Physics - Experiment
Abstract

In June 2012, an Expression of Interest for a long-baseline experiment (LBNO) has been submitted to the CERN SPSC. LBNO considers three types of neutrino detector technologies: a double-phase liquid argon (LAr) TPC and a magnetised iron detector as far detectors. For the near detector, a high-pressure gas TPC embedded in a calorimeter and a magnet is the baseline design. A mandatory milestone is a concrete prototyping effort towards the envisioned large-scale detectors, and an accompanying campaign of measurements aimed at assessing the detector associated systematic errors. The proposed $6\times 6\times 6$m$^3$ DLAr is an industrial prototype of the design discussed in the EoI and scalable to 20 kton or 50~kton. It is to be constructed and operated in a controlled laboratory and surface environment with test beam access, such as the CERN North Area (NA). Its successful operation and full characterisation will be a fundamental milestone, likely opening the path to an underground deployment of larger detectors. The response of the DLAr demonstrator will be measured and understood with an unprecedented precision in a charged particle test beam (0.5-20 GeV/c). The exposure will certify the assumptions and calibrate the response of the detector, and allow to develop and to benchmark sophisticated reconstruction algorithms, such as those of 3-dimensional tracking, particle ID and energy flow in liquid argon. All these steps are fundamental for validating the correctness of the physics performance described in the LBNO EoI., Comment: 217 pages, 164 figures, LBNO-DEMO (CERN WA105) Collaboration

Published
2015

11. Proposal for SPS beam time for the baby MIND and TASD neutrino detector prototypes

Author

Asfandiyarov, R., Bayes, R., Blondel, A., Bogomilov, M., Bross, A., Cadoux, F., Cervera, A., Izmaylov, A., Karadzhov, Y., Karpikov, I., Khabibulin, M., Khotyantsev, A., Kopylov, A., Kudenko, Y., Matev, R., Mineev, O., Musienko, Y., Nessi, M., Noah, E., Rubbia, A., Shaykiev, A., Soler, P., Roumen Tsenov, Vankova-Kirilova, G., and Yershov, N.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, General infrastructure for test beam and irradiation lines [8.5], Improvement and equipment of irradiation and test beam lines [8], FOS: Physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), Detectors and Experimental Techniques, High Energy Physics - Experiment
Abstract

The design, construction and testing of neutrino detector prototypes at CERN are ongoing activities. This document reports on the design of solid state baby MIND and TASD detector prototypes and outlines requirements for a test beam at CERN to test these, tentatively planned on the H8 beamline in the North Area, which is equipped with a large aperture magnet. It is hoped that this will allow for the current proposal to be considered in light of the recently approved projects related to neutrino activities with the SPS in the North Area in the medium term 2015-2020. The design, construction and testing of neutrino detector prototypes at CERN are ongoing activities. This document reports on the design of solid state baby MIND and TASD detector prototypes and outlines requirements for a test beam at CERN to test these, tentatively planned on the H8 beamline in the North Area, which is equipped with a large aperture magnet. The current proposal is submitted to be considered in light of the recently approved projects related to neutrino activities with the SPS in the North Area in the medium term 2015-2020.

Published
2014

12. A Toroidal Magnetised Iron Neutrino Detector (MIND) for a Neutrino Factory

Author

Bross, A., Wands, R., Bayes, R., Laing, A., Soler, F. J. P., Villanueva, A. Cervera, Ghosh, T., Cadenas, J. J. G��mez, Hern��ndez, P., Mart��n-Albo, J., and Burguet-Castell, J.

Subjects
High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract

A neutrino factory has unparalleled physics reach for the discovery and measurement of CP violation in the neutrino sector. A far detector for a neutrino factory must have good charge identification with excellent background rejection and a large mass. An elegant solution is to construct a magnetized iron neutrino detector (MIND) along the lines of MINOS, where iron plates provide a toroidal magnetic field and scintillator planes provide 3D space points. In this report, the current status of a simulation of a toroidal MIND for a neutrino factory is discussed in light of the recent measurements of large $\theta_{13}$. The response and performance using the 10 GeV neutrino factory configuration are presented. It is shown that this setup has equivalent $\delta_{CP}$ reach to a MIND with a dipole field and is sensitive to the discovery of CP violation over 85% of the values of $\delta_{CP}$., Comment: Results from the studies of a far detector at a neutrino factory as part of the European Framework Programme 7 project, EUROnu. 35 pages, 13 figures

Published
2013

13. Characterisation of the muon beams for the Muon Ionisation Cooling Experiment

Author

Adams, D., Collaboration, M., Adey, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Back, J., Barber, G., Barclay, P., De Bari, A., Bayes, R., Bayliss, V., Bertoni, R., Blackmore, V.J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C.N., Bowring, D., Boyd, S., Bradshaw, T.W., Bravar, U., Bross, A.D., Capponi, M., Carlisle, T., Cecchet, G., Charnley, G., Cobb, J.H., Colling, D., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L.M., DeMello, A., Dick, A.J., Dobbs, A., Dornan, P., Fayer, S., Filthaut, F., Fish, A., Fitzpatrick, T., Fletcher, R., Forrest, D., Francis, V., Freemire, B., Fry, L., Gallagher, A., Gamet, R., Gourlay, S., Grant, A., Graulich, J.S., Griffiths, S., Hanlet, P., Hansen, O.M., Hanson, G.G., Harrison, P., Hart, T.L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D.M., Karadzhov, Y., Kim, Y.K., Kolev, D., Kuno, Y., Kyberd, P., Lau, W., Leaver, J., Leonova, M., Li, D., Lintern, A., Littlefield, M., Long, K., Lucchini, G., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J.J., Neuffer, D., Nichols, A., Nicholson, R., Nugent, J.C., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Palmer, R.B., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M.A., Ricciardi, S., Richards, A., Roberts, T.J., Robinson, M., Rogers, C., Ronald, K., Rubinov, P., Rucinski, R., Rusinov, I., Sakamoto, H., Sanders, D.A., Santos, E., Savidge, T., Smith, P.J., Snopok, P., Soler, F.J.P., Stanley, T., Summers, D.J., Takahashi, M., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C.D., Vankova, G., Verguilov, V., Virostek, S.P., Vretenar, M., Walaron, K., Watson, S., White, C., Whyte, C.G., Wilson, A., Wisting, H., Zisman, M.S., Orestano, Domizia, Asfandiyarov, Ruslan, Blondel, Alain, Graulich, Jean-Sébastien, Karadzhov, Yordan Ivanov, Verguilov, Vassil Zlatilov, Wisting, Havard, and Palladino, Vittorio

Subjects
Physics, Accelerator Physics (physics.acc-ph), Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, FOS: Physical sciences, ddc:500.2, Accelerators and Storage Rings, 01 natural sciences, Nuclear physics, Momentum, Ionization, 0103 physical sciences, Dispersion (optics), Physics::Accelerator Physics, Physics - Accelerator Physics, Thermal emittance, ICTF@STFC [8], ICTF@STFC [8.1], 010306 general physics, Engineering (miscellaneous), Astrophysics::Galaxy Astrophysics, QC, physics.acc-ph
Abstract

A novel single-particle technique to measure emittance has been developed and used to characterise seventeen different muon beams for the Muon Ionisation Cooling Experiment (MICE). The muon beams, whose mean momenta vary from 171 to 281 MeV/c, have emittances of approximately 1.5--2.3 \pi mm-rad horizontally and 0.6--1.0 \pi mm-rad vertically, a horizontal dispersion of 90--190 mm and momentum spreads of about 25 MeV/c. There is reasonable agreement between the measured parameters of the beams and the results of simulations. The beams are found to meet the requirements of MICE., Comment: Published in EPJC, 20 pages, 15 figures

Published
2013

14. Neutrinos from Stored Muons nuSTORM: Expression of Interest

Author

Adey, D., Agarwalla, S. K., Ankenbrandt, C. M., Asfandiyarov, R., Back, J. J., Barker, G., Eric Baussan, Bayes, R., Bhadra, S., Blackmore, V., Blondel, A., Bogacz, S. A., Booth, C., Boyd, S. B., Bravar, A., Brice, S. J., Bross, A. D., Cadoux, F., Cease, H., Cervera, A., Cobb, J., Colling, D., Coney, L., Dobbs, A., Dobson, J., Donini, A., Dornan, P. J., Dracos, M., Dufour, F., Edgecock, R., Evans, J., Geelhoed, M., George, M. A., Ghosh, T., Gouvea, A., Gomez-Cadenas, J. J., Haesler, A., Hanson, G., Harrison, P. F., Hartz, M., Hernandez, P., Hernando-Morata, J. A., Hodgson, P. J., Huber, P., Izmaylov, A., Karadhzov, Y., Kobilarcik, T., Kopp, J., Kormos, L., Korzenev, A., Kurup, A., Kuno, Y., Kyberd, P., Lagrange, J. B., Laing, A. M., Link, J., Liu, A., Long, K. R., Mccauley, N., Mcdonald, K. T., Mahn, K., Martin, C., Martin, J., Mena, O., Mishra, S. R., Mokhov, N., Morfin, J., Mori, Y., Murray, W., Neuffer, D., Nichol, R., Noah, E., Palmer, M. A., Parke, S., Pascoli, S., Pasternak, J., Popovic, M., Ratoff, P., Ravonel, M., Rayner, M., Ricciardi, S., Rogers, C., Rubinov, P., Santos, E., Sato, A., Scantamburlo, E., Sedgbeer, J. K., Smith, D. R., Smith, P. J., Sobczyk, J. T., Soldner-Rembold, S., Soler, F. J. P., Sorel, M., Stahl, A., Stanco, L., Stamoulis, P., Striganov, S., Tanaka, H., Taylor, I. J., Touramanis, C., Tunnell, C. D., Uchida, Y., Vassilopoulos, N., Wascko, M. O., Wilking, M. J., Weber, A., Wildner, E., Winter, W., Yang, U. K., Center for Neutrino Physics, and Physics

Subjects
Accelerator Physics (physics.acc-ph), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, hep-ph, Instrumentation and Detectors (physics.ins-det), Accelerators and Storage Rings, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Physics::Accelerator Physics, High Energy Physics::Experiment, Physics - Accelerator Physics, physics.ins-det, physics.acc-ph
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 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., 59 pages; 24 figures; 5 tables

Published
2013

15. The EUROnu Project

Author

Edgecock, T. R., Caretta, O., Davenne, T., Densham, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo-Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chancé, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrycka, A., Wroblewski, A., Marie-Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, Th., Delbar, Th., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A. C., Kravchuk, V. L., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, E., Di Nitto, A., Brondi, A., La Rana, G., Migliozzi, P., Moro, R., Palladino, V., Gelli, N., Berkovits, D., Hass, M., Hirsh, T. Y., Schaumann, M., Stahl, A., Wehner, J., Bross, A., Kopp, J., Neuffer, D., Wands, R., Bayes, R., Laing, A., Soler, P., Agarwalla, S. K., Villanueva, A. Cervera, Donini, A., Ghosh, T., Cadenas, J. J. Gómez, Hernández, P., Martín-Albo, J., Mena, O., Burguet-Castell, J., Agostino, L., Buizza-Avanzini, M., Marafini, M., Patzak, T., Tonazzo, A., Duchesneau, D., Mosca, L., Bogomilov, M., Karadzhov, Y., Matev, R., Tsenov, R., Akhmedov, E., Blennow, M., Lindner, M., Schwetz, T., Martinez, E. Fernández, Maltoni, M., Menéndez, J., Giunti, C., García, M. C. González, Salvado, J., Coloma, P., Huber, P., Li, T., López-Pavón, J., Orme, C., Pascoli, S., Meloni, D., Tang, J., Winter, W., Ohlsson, T., Zhang, H., Scotto-Lavina, L., Terranova, F., Bonesini, M., Tortora, L., Alekou, A., Aslaninejad, M., Bontoiu, C., Kurup, A., Jenner, L. J., Long, K., Pasternak, J., Pozimski, J., Back, J. J., Harrison, P., Beard, K., Bogacz, A., Berg, J. S., Stratakis, D., Witte, H., Snopok, P., Bliss, N., Cordwell, M., Moss, A., Pattalwar, S., and Apollonio, M.

Subjects
Accelerator Physics (physics.acc-ph), High Energy Physics - Experiment (hep-ex), Physics::Instrumentation and Detectors, Physics::Accelerator Physics, FOS: Physical sciences, Physics - Accelerator Physics, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract

The EUROnu project has studied three possible options for future, high intensity neutrino oscillation facilities in Europe. The first is a Super Beam, in which the neutrinos come from the decay of pions created by bombarding targets with a 4 MW proton beam from the CERN High Power Superconducting Proton Linac. The far detector for this facility is the 500 kt MEMPHYS water Cherenkov, located in the Fr\'ejus tunnel. The second facility is the Neutrino Factory, in which the neutrinos come from the decay of {\mu}+ and {\mu}- beams in a storage ring. The far detector in this case is a 100 kt Magnetised Iron Neutrino Detector at a baseline of 2000 km. The third option is a Beta Beam, in which the neutrinos come from the decay of beta emitting isotopes, in particular 6He and 18Ne, also stored in a ring. The far detector is also the MEMPHYS detector in the Fr\'ejus tunnel. EUROnu has undertaken conceptual designs of these facilities and studied the performance of the detectors. Based on this, it has determined the physics reach of each facility, in particular for the measurement of CP violation in the lepton sector, and estimated the cost of construction. These have demonstrated that the best facility to build is the Neutrino Factory. However, if a powerful proton driver is constructed for another purpose or if the MEMPHYS detector is built for astroparticle physics, the Super Beam also becomes very attractive., Comment: Results from the Framework Programme 7 project EUROnu, which studied three possible accelerator facilities for future high intensity neutrino oscillation facilities in Europe

Published
2013
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16. Precision muon decay measurements and improved constraints on the weak interaction

Author

TWIST Collaboration, Hillairet, A., Bayes, R., Bueno, J. F., Davydov, Yu. I., Depommier, P., Faszer, W., Gagliardi, C. A., Gaponenko, A., Gill, D. R., Grossheim, A., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hu, J., Koetke, D. D., MacDonald, R. P., Marshall, G. M., Mathie, E. L., Mischke, R. E., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics - Experiment (hep-ex), Muon, FOS: Physical sciences, High Energy Physics::Experiment, Weak interaction, Twist, Standard Model, High Energy Physics - Experiment
Abstract

The TWIST Collaboration has completed its measurement of the three muon decay parameters \rho, \delta, and P_\mu\xi. This paper describes our determination of \rho, which governs the shape of the overall momentum spectrum, and \delta, which controls the momentum dependence of the parity-violating decay asymmetry. The results are \rho=0.74977\pm 0.00012(stat.)\pm 0.00023(syst.) and \delta = 0.75049\pm 0.00021(stat.)\pm 0.00027(syst.). These are consistent with the value of 3/4 given for both parameters in the standard model, and each is over a factor of 10 more precise than the measurements published prior to TWIST. Our final results on \rho, \delta, and P_\mu\xi have been incorporated into a new global analysis of all available muon decay data, resulting in improved model-independent constraints on the possible weak interactions of right-handed particles., Comment: 19 pages, 10 figures

Published
2011

17. Precise measurement of parity violation in polarized muon decay

Author

TWIST Collaboration, Bueno, J. F., Bayes, R., Davydov, Yu. I., Depommier, P., Faszer, W., Gagliardi, C. A., Gaponenko, A., Gill, D. R., Grossheim, A., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hillairet, A., Hu, J., Koetke, D. D., MacDonald, R. P., Marshall, G. M., Mathie, E. L., Mischke, R. E., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, media_common.quotation_subject, Electroweak interaction, FOS: Physical sciences, Parity (physics), Weak interaction, Asymmetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pion, High Energy Physics::Experiment, Twist, media_common
Abstract

We present a new high precision measurement of parity violation in the weak interaction, using polarized muon decay. The TWIST collaboration has measured $P_\mu^\pi \xi$, where $P_\mu^\pi$ is the polarization of the muon in pion decay and $\xi$ describes the intrinsic asymmetry in muon decay. We find $P_\mu^\pi \xi = 1.00084 \pm 0.00029\,(\textrm{stat.})_{-0.00063}^{+0.00165}\,(\textrm{syst.})$, in good agreement with the standard model prediction of $P_\mu^\pi=\xi=1$. Our result is a factor of 7 more precise than the pre-TWIST value, setting new limits in left-right symmetric electroweak extensions to the standard model., Comment: 18 pages, 12 figures, published in Phys. Rev. D

Published
2011
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18. Blind analysis results of the TWIST experiment

Author

Hillairet, A., Bayes, R., Bueno, J. F., Davydov, Y. I., Depommier, P., Faszer, W., Fujiwara, M. C., Gagliardi, C. A., Gaponenko, A., Grossheim, A., Gill, D. R., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hu, J., Koetke, D. D., MacDonald, R. P., Marshall, G. M., Mathie, E. W., Mischke, R. E., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract

The TRIUMF Weak Interaction Symmetry Test (TWIST) experiment was designed to test the standard model at high precision in the purely leptonic decay of polarized muons. A general four-fermion interaction model is used to describe the muon decay. TWIST measures three of the four muon decay parameters of this model, $\rho$, $\delta$ and $P_{\mu}^{\pi} \xi$, from the shape of the momentum-angle spectrum. The results of this model independent approach are compared to the standard model predictions and used to constrain new physics. Our collaboration has finalized the blind analysis of the final experimental data taken in 2006 and 2007. This analysis mostly reached our goal of a precision of an order of magnitude improvement over the pre-TWIST measurements., Comment: 6 pages, 3 figures, proceedings for the Lake Louise Winter Institute 2010

Published
2010
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19. Decay of negative muons bound in $^{27}$Al

Author

Grossheim, A., Bayes, R., Bueno, J. F., Depommier, P., Faszer, W., Fujiwara, M. C., Gagliardi, C. A., Gill, D. R., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hillairet, A., Hu, J., Koetke, D. D., Marshall, G. M., Mathie, E. L., Mischke, R. E., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract

We present the first measurement of the energy spectrum up to 70 MeV of electrons from the decay of negative muons after they become bound in $^{27}$Al atoms. The data were taken with the TWIST apparatus at TRIUMF. We find a muon lifetime of (864.6 $\pm$ 1.2) ns, in agreement with earlier measurements. The asymmetry of the decay spectrum is consistent with zero, indicating that the atomic capture has completely depolarised the muons. The measured momentum spectrum is in reasonable agreement with theoretical predictions at the higher energies, but differences around the peak of the spectrum indicate the need for \oalpha radiative corrections to the calculations. The present measurement is the most precise measurement of the decay spectrum of muons bound to any nucleus.

Published
2009

20. A Precision Measurement of the Muon Decay Parameters $��$ and $��$

Author

TWIST Collaboration, MacDonald, R. P., Bayes, R., Bueno, J., Davydov, Yu. I., Depommier, P., Faszer, W., Fujiwara, M. C., Gagliardi, C. A., Gaponenko, A., Gill, D. R., Grossheim, A., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hillairet, A., Hu, J., Jamieson, B., Kitching, P., Koetke, D. D., Marshall, G. M., Mathie, E. L., Mischke, R. E., Musser, J. R., Nozar, M., Olchanski, K., Olin, A., Openshaw, R., Poutissou, J. -M., Poutissou, R., Quraan, M. A., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., and Tribble, R. E.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex)
Abstract

The TWIST collaboration has performed new measurements of two of the parameters that describe muon decay: $��$, which governs the shape of the overall momentum spectrum, and $��$, which governs the momentum dependence of the parity-violating decay asymmetry. This analysis gives the results $��=0.75014\pm 0.00017(\text{stat})\pm 0.00044(\text{syst})\pm 0.00011(��)$, where the last uncertainty arises from the correlation between $��$ and the decay parameter $��$, and $��= 0.75067\pm 0.00030(\text{stat})\pm 0.00067(\text{syst})$. These are consistent with the value of 3/4 given for both parameters in the Standard Model of particle physics, and are a factor of two more precise than the measurements previously published by TWIST. A new global analysis of all available muon decay data incorporating these results is presented. Improved lower and upper limits on the decay parameter $P_��^����$ of $0.99524 < P_��^����\leq ��< 1.00091$ at 90% confidence are determined, where $P_��^��$ is the polarization of the muon when it is created during pion decay, and $��$ governs the muon decay asymmetry. These results set new model-independent constraints on the possible weak interactions of right-handed particles. Specific implications for left-right symmetric models are discussed., 14 pages, 14 figs, accepted for publication in Phys. Rev. D

Published
2008
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21. Measurement of P_{mu}xi in Polarized Muon Decay

Author

TWIST Collaboration, Jamieson, B., Bayes, R., Davydov, Yu. I., Depommier, P., Doornbos, J., Faszer, W., Fujiwara, M. C., Gagliardi, C. A., Gaponenko, A., Gill, D. R., Gumplinger, P., Hasinoff, M. D., Henderson, R. S., Hu, J., Kitching, P., Koetke, D. D., Macdonald, J. A., MacDonald, R. P., Marshall, G. M., Mathie, E. L., Mischke, R. E., Musser, J. R., Nozar, M., Olchanski, K., Olin, A., Openshaw, R., Porcelli, T. A., Poutissou, J. -M., Poutissou, R., Quraan, M. A., Rodning, N. L., Selivanov, V., Sheffer, G., Shin, B., Stanislaus, T. D. S., Tacik, R., Torokhov, V. D., Tribble, R. E., and Vasiliev, M. A.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract

The quantity P_{mu}^{pi}xi, where xi is one of the muon decay parameters and $P_{\mu}^{\pi}$ is the degree of muon polarization in pion decay, has been measured. The value P_{mu}^{pi}xi = 1.0003 +- 0.0006 stat. +- 0.0038 syst. was obtained. This result agrees with previous measurements but is over a factor of two more precise. It also agrees with the Standard Model prediction for P_{mu}^{pi}xi and thus leads to restrictions on left-right symmetric models., Comment: 11 pages, 7 figures, Phys. Rev. D 74, 072007 (2006) Final version

Published
2006
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22. Baby MIND: A Magnetised Spectrometer for the WAGASCI Experiment

Author

Antonova, M., Asfandiyarov, R., Bayes, R., Benoit, P., Blondel, A., Bogomilov, M., Bross, A., Cadoux, F., Cervera, A., Chikuma, N., Dudarev, A., Ekelöf, T., Favre, Y., Fedotov, S., Hallsjö, S-P, Izmaylov, A., Karadzhov, Y., Khabibullin, M., Khotyantsev, A., Kleymenova, A., Koga, T., Kostin, A., Kudenko, Y., Likhacheva, V., Martinez, B., Matev, R., Medvedeva, M., Mefodiev, A., Minamino, A., Mineev, O., Nessi, M., Nicola, L., Noah, E., Ovsiannikova, T., Pais Da Silva, H., Parsa, S., Rayner, M., Rolando, G., Shaykhiev, A., Simion, P., Soler, F. J. P., Suvorov, S., Roumen Tsenov, Ten Kate, H., Vankova-Kirilova, G., and Yershov, N.

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, hep-ex, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Detectors and Experimental Techniques, Large scale cryogenic liquid detectors [8], physics.ins-det, Particle Physics - Experiment
Abstract

The WAGASCI experiment being built at the J-PARC neutrino beam line will measure the difference in cross sections from neutrinos interacting with a water and scintillator targets, in order to constrain neutrino cross sections, essential for the T2K neutrino oscillation measurements. A prototype Magnetised Iron Neutrino Detector (MIND), called Baby MIND, is being constructed at CERN to act as a magnetic spectrometer behind the main WAGASCI target to be able to measure the charge and momentum of the outgoing muon from neutrino charged current interactions., Comment: Poster presented at NuPhys2016 (London, 12-14 December 2016). Title + 4 pages, LaTeX, 6 figures

23. Electron-muon ranger: performance in the MICE muon beam

Author

D. Adams, A. Alekou, M. Apollonio, R. Asfandiyarov, G. Barber, P. Barclay, A. de Bari, R. Bayes, V. Bayliss, P. Bene, R. Bertoni, V.J. Blackmore, A. Blondel, S. Blot, M. Bogomilov, M. Bonesini, C.N. Booth, D. Bowring, S. Boyd, T.W. Bradshaw, U. Bravar, A.D. Bross, F. Cadoux, M. Capponi, T. Carlisle, G. Cecchet, C. Charnley, F. Chignoli, D. Cline, J.H. Cobb, G. Colling, N. Collomb, L. Coney, P. Cooke, M. Courthold, L.M. Cremaldi, S. Debieux, A. DeMello, A. Dick, A. Dobbs, P. Dornan, F. Drielsma, F. Filthaut, T. Fitzpatrick, P. Franchini, V. Francis, L. Fry, A. Gallagher, R. Gamet, R. Gardener, S. Gourlay, A. Grant, J.S. Graulich, J. Greis, S. Griffiths, P. Hanlet, O.M. Hansen, G.G. Hanson, T.L. Hart, T. Hartnett, T. Hayler, C. Heidt, M. Hills, P. Hodgson, C. Hunt, C. Husi, A. Iaciofano, S. Ishimoto, G. Kafka, D.M. Kaplan, Y. Karadzhov, Y.K. Kim, Y. Kuno, P. Kyberd, J.-B. Lagrange, J. Langlands, W. Lau, M. Leonova, D. Li, A. Lintern, M. Littlefield, K. Long, T. Luo, C. Macwaters, B. Martlew, J. Martyniak, F. Masciocchi, R. Mazza, S. Middleton, A. Moretti, A. Moss, A. Muir, I. Mullacrane, J.J. Nebrensky, D. Neuffer, A. Nichols, R. Nicholson, L. Nicola, E. Noah Messomo, J.C. Nugent, A. Oates, Y. Onel, D. Orestano, E. Overton, P. Owens, V. Palladino, J. Pasternak, F. Pastore, C. Pidcott, M. Popovic, R. Preece, S. Prestemon, D. Rajaram, S. Ramberger, M.A. Rayner, S. Ricciardi, T.J. Roberts, M. Robinson, C. Rogers, K. Ronald, K. Rothenfusser, P. Rubinov, P. Rucinski, H. Sakamato, D.A. Sanders, R. Sandström, E. Santos, T. Savidge, P.J. Smith, P. Snopok, F.J.P. Soler, D. Speirs, T. Stanley, G. Stokes, D.J. Summers, J. Tarrant, I. Taylor, L. Tortora, Y. Torun, R. Tsenov, C.D. Tunnell, M.A. Uchida, G. Vankova-Kirilova, S. Virostek, M. Vretenar, P. Warburton, S. Watson, C. White, C.G. Whyte, A. Wilson, H. Wisting, X. Yang, A. Young, M. Zisman, Science and Technology Facilities Council (STFC), Adams, D., Alekou, A., Apollonio, M., Asfandiyarov, R., Barber, G., Barclay, P., De Bari, A., Bayes, R., Bayliss, V., Bene, P., Bertoni, R., Blackmore, V. J., Blondel, A., Blot, S., Bogomilov, M., Bonesini, M., Booth, C. N., Bowring, D., Boyd, S., Bradshaw, T. W., Bravar, U., Bross, A. D., Cadoux, F., Capponi, M., Carlisle, T., Cecchet, G., Charnley, C., Chignoli, F., Cline, D., Cobb, J. H., Colling, G., Collomb, N., Coney, L., Cooke, P., Courthold, M., Cremaldi, L. M., Debieux, S., Demello, A., Dick, A., Dobbs, A., Dornan, P., Drielsma, F., Filthaut, F., Fitzpatrick, T., Franchini, P., Francis, V., Fry, L., Gallagher, A., Gamet, R., Gardener, R., Gourlay, S., Grant, A., Graulich, J. S., Greis, J., Griffiths, S., Hanlet, P., Hansen, O. M., Hanson, G. G., Hart, T. L., Hartnett, T., Hayler, T., Heidt, C., Hills, M., Hodgson, P., Hunt, C., Husi, C., Iaciofano, A., Ishimoto, S., Kafka, G., Kaplan, D. M., Karadzhov, Y., Kim, Y. K., Kuno, Y., Kyberd, P., Lagrange, J. -B., Langlands, J., Lau, W., Leonova, M., Li, D., Lintern, A., Littlefield, M., Long, K., Luo, T., Macwaters, C., Martlew, B., Martyniak, J., Masciocchi, F., Mazza, R., Middleton, S., Moretti, A., Moss, A., Muir, A., Mullacrane, I., Nebrensky, J. J., Neuffer, D., Nichols, A., Nicholson, R., Nicola, L., Messomo, E. N., Nugent, J. C., Oates, A., Onel, Y., Orestano, D., Overton, E., Owens, P., Palladino, V., Pasternak, J., Pastore, F., Pidcott, C., Popovic, M., Preece, R., Prestemon, S., Rajaram, D., Ramberger, S., Rayner, M. A., Ricciardi, S., Roberts, T. J., Robinson, M., Rogers, C., Ronald, K., Rothenfusser, K., Rubinov, P., Rucinski, P., Sakamato, H., Sanders, D. A., Sandstrom, R., Santos, E., Savidge, T., Smith, P. J., Snopok, P., Soler, F. J. P., Speirs, D., Stanley, T., Stokes, G., Summers, D. J., Tarrant, J., Taylor, I., Tortora, L., Torun, Y., Tsenov, R., Tunnell, C. D., Uchida, M. A., Vankova-Kirilova, G., Virostek, S., Vretenar, M., Warburton, P., Watson, S., White, C., Whyte, C. G., Wilson, A., Wisting, H., Yang, X., Young, A., Zisman, M., and Palladino, Vittorio

Subjects
Technology, Physics - Instrumentation and Detectors, Traverse, Physics::Instrumentation and Detectors, FOS: Physical sciences, Electron, Cooling channel, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle identification method, Particle identification methods, Calorimeters, DESIGN, Particle tracking detectors, 0103 physical sciences, Ionization cooling, Detectors and Experimental Techniques, Nuclear Experiment, 010306 general physics, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Instrumentation, Instruments & Instrumentation, QC, Mathematical Physics, Physics, Calorimeter, Range (particle radiation), Muon, Science & Technology, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Particle tracking detector, Experimental High Energy Physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Performance of High Energy Physics Detectors, Beam (structure)
Abstract

The Muon Ionization Cooling Experiment (MICE) will perform a detailed study of ionization cooling to evaluate the feasibility of the technique. To carry out this program, MICE requires an efficient particle-identification (PID) system to identify muons. The Electron-Muon Ranger (EMR) is a fully-active tracking-calorimeter that forms part of the PID system and tags muons that traverse the cooling channel without decaying. The detector is capable of identifying electrons with an efficiency of 98.6%, providing a purity for the MICE beam that exceeds 99.8%. The EMR also proved to be a powerful tool for the reconstruction of muon momenta in the range 100-280 MeV/$c$., 22 pages, 19 figures

Published
2015

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