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2. Magnetic spectrometer Big Karl for studies of meson production reactions

Author

Aleksandra Wrońska, J. Lieb, J. Bojowald, A. Strzalkowski, B. Razen, P. Hawranek, A. Magiera, St. Kistryn, T. Kutsarova, L. Freindl, A. Budzanowski, J. Urban, R. Siudak, S. Kliczewski, H. Machner, D. Frekers, D. Protic, M. Uličný, W. Klimala, P. von Rossen, D. Kolev, M. Kravcikova, A. Chatterjee, J. Ernst, G. Martinska, K. Kilian, J. Ilieva, B. J. Roy, R. Tsenov, Lubomir Pentchev, L. Jarczyk, and Jerzy Smyrski

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Meson production, Spectrometer, Charge (physics), magnetic spectrometer, Nuclear physics, Momentum, meson production, relative acceptance, Symmetry breaking, Experimental methods, Instrumentation
Abstract

The paper describes modifications of the Julich magnetic spectrometer Big Karl needed to study meson production and especially to investigate charge symmetry breaking effects—an experiment that requires a high-precision measurement. New elements that have been added to Big Karl have extended the spectrometer capabilities to a much wider momentum range. The new features also facilitate simultaneous detection of particles with very different rigidities. The experimental methods for improving background and determining relative acceptance of the spectrometer at various rigidities are presented.

Published
2002
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3. Meson production in p + d reactions

Author

B. Razen, A Chatterjee, RV Srikantiah, R. Siudak, K. Grewer, W. Garske, H. Nann, R. Tsenov, A. Magiera, A. Budzanowski, W. Klimala, H. Machner, D. Kolev, T. Kutsarova, A. Hamacher, K. Kilian, M G Betigeri, H.S. Plendl, J. Lieb, P. von Rossen, Jerzy Smyrski, J. Ilieva, S. Kliczewski, D. Frekers, L. Freindl, J. Bojowald, A. Strzalkowski, L. Pentchev, D. Protic, K. Zwoll, L. Jarczyk, B. J. Roy, and J. Ernst

Subjects
Physics, media_common.quotation_subject, Nuclear Theory, Detector, General Physics and Astronomy, Resonance (particle physics), Asymmetry, Nuclear physics, Baryon, Isospin, Symmetry breaking, Nuclear Experiment, Beam (structure), Differential (mathematics), media_common
Abstract

Total and differential cross sections for the reactions p + d → 3He + m 0 with m=π, η and p + d → 3H+π+ were measured with the GEM detector at COSY for beam momenta between threshold and the maximum of the corresponding baryon resonance. For both reactions a strong forward-backward asymmetry was found. The data were compared with model calculations. The aspect of isospin symmetry breaking is studied.

Published
2001
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4. Meson production in p+d reactions

Author

B. J. Roy, A. Magiera, J. Bojowald, P. von Rossen, Lubomir Pentchev, L. Freindl, A. Strzalkowski, K. Grewer, H.S. Plendl, J. Ernst, T. Kutsarova, H. Machner, Jerzy Smyrski, M G Betigeri, S. Kliczewski, D. Frekers, R. Tsenov, L. Jarczyk, RV Srikantiah, R. Siudak, J. Lieb, W. Garske, B. Razen, K. Zwoll, K. Kilian, J. Ilieva, D. Protic, H. Nann, A. Budzanowski, W. Klimala, D. Kolev, A. Chatterjee, and A. Hamacher

Subjects
Nuclear reaction, Scattering cross-section, Nuclear and High Energy Physics, Meson production, Meson, Physics::Instrumentation and Detectors, media_common.quotation_subject, Nuclear Theory, FOS: Physical sciences, Elementary particle, Resonance (particle physics), Asymmetry, Nuclear physics, Pion, Symmetry breaking, Nuclear Experiment (nucl-ex), Nuclear Experiment, Boson, media_common, Physics, Threshold energy, Baryon, Isospin, High Energy Physics::Experiment, Nucleon, Beam (structure)
Abstract

The production of neutral and charged pions as well as eta mesons is studied in the Delta and N* resonance region, respectively. Heavy A=3 recoils were measured with the GEM detector. The differential cross sections covering the full angular range are compared with model calculations., Comment: 4 pages, latex, 4 figures, talk presented at the XVIIth European Conference on Few-Body Problems in Physics, Evora, Portugal, September 2000; to be published in Nucl. Phys. A

Published
2001
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5. Test of charge independence in p + d → (A=3)+pion reactions

Author

W. Garske, B. Razen, J. Lieb, T. Kutsarova, K. Grewer, A. Hamacher, H.S. Plendl, M.G. Betigeri, K. Zwoll, K. Kilian, W. Klimala, L. Pentchev, R. Tsenov, D. Kolev, L. Jarczyk, P. von Rossen, J. Ilieva, B. J. Roy, L. Freindl, H. Machner, A. Budzanowski, D. Protic, J. Ernst, A. Magiera, S. Kliczewski, D. Frekers, A. Chatterjee, J. Bojowald, A. Strzalkowski, R. Siudak, and H. Nann

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Pion, Meson, Isospin, Hadron, Independence (mathematical logic), Elementary particle, Charge (physics), Boson
Published
2000
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6. Measurement of in the S11 resonance

Author

S. V. Förtsch, Matthias Drochner, D. Protic, T. Kutsarova, K. Grewer, A. Magiera, P. A. Zolnierczuk, K. Zwoll, D. Kolev, A. Strzałkowski, M G Betigeri, A. Hamacher, B.R. Roy, A. Chatterjee, A. Budzanowski, J. Ilieva, G. Lippert, J. Ernst, Hartmut Machner, W. Klimala, S. Igel, Lubomir Pentchev, L. Jarczyk, J. Lieb, R. Tsenov, B. Razen, Günter Kemmerling, Jerzy Smyrski, P. von Rossen, S. Kliczewski, L. Freindl, R. Siudak, D. Frekers, J. Bojowald, H. Nann, R. Jahn, H.S. Plendl, K. Kilian, and W. Garske

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Nuclear magnetic resonance, Resonance
Published
2000
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7. Precise momentum determination of the external COSY proton beam near 1930 MeV

Author

B. J. Lieb, R. Jahn, A. Magiera, D. Kolev, R. Tsenov, D. Protic, P. A. Zolnierczuk, T. Kutsarova, K. Kilian, A. Hamacher, R. Siudak, M. Hawash, A. Chatterjee, L. Freindl, A. Budzanowski, W. Garske, H. Nann, M. Drochner, K. Zwoll, R. Maier, J. Bojowald, H.S. Plendl, G. Lippert, S. V. Förtsch, B.R. Roy, M.G. Betigeri, D. Frekers, G. Kemmerling, A. Strzałkowski, I. Ilieva, J. Ernst, K. Grewer, Hartmut Machner, S. Igel, W. Klimala, B. Razen, L. Jarczyk, Jerzy Smyrski, P. von Rossen, and S. Kliczewski

Subjects
Physics, Nuclear and High Energy Physics, Momentum (technical analysis), Meson, Proton, Spectrometer, Nuclear Theory, Nuclear physics, Pion, Deuterium, Stochastic cooling, Physics::Accelerator Physics, Nuclear Experiment, Instrumentation, Beam (structure)
Abstract

We present a method to determine precisely the absolute momentum of the external proton beam from the Julich Cooler Synchrotron COSY near 1930 MeV /c . In the pp → d π + reaction at 1930.477 MeV /c incident beam momentum, the forward going pions ( θ c.m. =0° ) and the backward going deuterons ( θ c.m. =180° ) have the same laboratory momentum. Such coincident pion–deuteron events are detected in the focal plane of the magnetic spectrometer BIG KARL located at θ lab =0° . Using the nearly linear dependence of the difference between the measured pion and deuteron momenta as a function of the proton beam momentum, the absolute momentum of the external proton beam from COSY near 1930 MeV /c was determined with a precision of 5.2×10 −5 .

Published
1999
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8. The germanium wall of the GEM detector system

Author

A. Hamacher, P.A. Żołnierczuk, T. Kutsarova, K. Kilian, A. Strzałkowski, A. Magiera, J. Ernst, P. von Rossen, D. Protic, H Bojowald, D. Kolev, H.S. Plendl, J. Ilieva, E Białkowski, B. J. Roy, S. Kliczewski, K. Grewer, R. Siudak, S. V. Förtsch, M. Jochmann, G. Lippert, D. Frekers, J. Lieb, M.G. Betigeri, G. Kemmerling, S. Igel, Hartmut Machner, L. Jarczyk, B. Razen, L. Freindl, W. Klimala, A. Chatterjee, K. Zwoll, M. Drochner, L. Pentchev, R. Tsenov, A. Budzanowski, Jerzy Smyrski, RV Srikantiah, W. Garske, and H. Nann

Subjects
Physics, Nuclear and High Energy Physics, business.industry, Detector, chemistry.chemical_element, Germanium, Particle detector, Semiconductor detector, Calorimeter, Optics, Stack (abstract data type), chemistry, Position (vector), Measuring instrument, business, Instrumentation
Abstract

A stack of annular detectors made of high-purity germanium was developed. The detectors are position sensitive with radial structures. The first one (“Quirl”) is double-sided position sensitive defining 40 000 pixels, the following three (E1, E2 and E3) have 32 wedges each. The Quirl acts as tracker while the other three act as calorimeter. The stack was successfully operated in meson production reactions close to threshold.

Published
1999
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9. The p + p → π+ + d reaction close to threshold at COSY

Author

S. Igel, L. Jarczyk, K. Grewer, J. Ernst, W. Garske, G. Lippert, R. Maier, D. Frekers, G. Kemmerling, R. Jahn, Hartmut Machner, P. von Rossen, C. Nake, W. Klimala, K. Kilian, D. Kolev, P.A. Żołnierczuk, R. Tsenov, L. Freindl, B.R. Roy, M. Drochner, B. Razen, K. Zwoll, T. Kutsarova, R. Siudak, S. V. Förtsch, Jerzy Smyrski, S. Kliczewski, K. Scho, and A. Strzałkowski

Subjects
Cross section (geometry), Physics, Nuclear and High Energy Physics, Proton, Partial wave analysis, Phase space, Isospin, Atomic physics, Nuclear Experiment, Symmetry (physics), Beam (structure)
Abstract

Differential and total cross sections of the p + p → π+ + d reaction close to threshold were measured employing a magnetic spectrograph with track reconstruction, a very thin liquid hydrogen target and an accelerated proton beam with high phase space density. The data resolve a previous discrepancy between the n + p → π0 + d and the π+ + d → 2p reaction close to threshold indicating that isospin symmetry may be broken in the s-wave part of the cross section.

Published
1998
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10. The target area of the external COSY experiments

Author

R. Siudak, P. Turek, S. Igel, Hartmut Machner, V. Jaeckle, K. Kilian, J. Nüsser, B. Razen, R. Klein, C. Nake, and A. Hassan

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Scintillator, Optics, Heating system, Deuterium, Hadron physics, Millimeter, business, Particle beam, Liquid hydrogen
Abstract

For hadron physics experiments the combination of a well defined cooled particle beam and a small target volume provides a well defined interaction vertex. With a thin target a precise energy definition is obtained and systematic errors due to Coulomb scattering and secondary interactions with the target material are reduced. A liquid hydrogen deuterium target of a few millimeter length has been constructed and operated since three years in the external experiments at COSY Julich. A small target together with a wide acceptance of the detectors behind require the diminution of background reactions. Therefore, very thin target windows of 0.9 μm Mylar foils are realized with the use of a purely mechanical pressure stabilization system. With a fast heating system one can overcome the problem of background reactions with rest gas condensing on the foils. For the precise definition of the incoming beam, veto systems consisting of two annular plastic scintillators are installed before the target in order to detect all particles not passing through the target cell and their reaction products. The improvements of the liquid hydrogen deuterium target and the design of veto systems are described.

Published
1997
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11. A solid-state spectrometer for cooled beams with high acceptance and resolution in space and energy

Author

A. Hamacher, S. Kliczewski, H. Plendl, M. Drochner, S. Igel, K. Kilian, W. Garske, K. Grewer, B. Razen, R.V. Srikantiah, A. Budzanowski, K. Zwoll, D. Frekers, G. Kemmerling, Hartmut Machner, and D. Protic

Subjects
Physics, Nuclear and High Energy Physics, Proton, Spectrometer, Physics::Instrumentation and Detectors, Detector, Resolution (electron density), chemistry.chemical_element, Germanium, Semiconductor detector, Nuclear physics, Stack (abstract data type), chemistry, High Energy Physics::Experiment, Nuclear Experiment, Beam (structure)
Abstract

The GEM detector, a hybrid system consisting of the Germanium Wall and the magnetic spectrometer BIG KARL, was developed to investigate meson production and meson-nucleus interaction with cooled external proton beams from the COSY accelerator at Julich. The Germanium Wall is a stack of up to four annular position-sensitive semiconductor detectors made from high-purity germanium. Its special structure allows experiments with high counting rates. Design features and results from first test runs with the uncooled COSY beam are presented.

Published
1997
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12. pp → dπ+ precise angular distributions close to threshold from 0.3 to 5 MeV

Author

Hartmut Machner, W. Garske, D. Kolev, A. Strzałkowski, S. V. Förtsch, R. Siudak, R. Jahn, T. Kutsarova, K. Kilian, K. Zwoll, P. A. Zolnierczuk, Matthias Drochner, R. Tsenov, Jerzy Smyrski, W. Klimala, G. Lippert, D. Frekers, R. Maier, L. Freindl, K. Grewer, S. Igel, L. Jarczyk, J. Ernst, K. Scho, B. Razen, Günter Kemmerling, P. von Rossen, C. Nake, and S. Kliczewski

Subjects
Ray tracing (physics), Physics, Nuclear and High Energy Physics, Amplitude, Spectrometer, Deuterium, Isospin, Homogeneous space, Atomic physics, Nuclear Experiment, Anisotropy
Abstract

For the first time the reaction pp → dπ + was measured close to threshold. A magnetic spectrometer (3Q2DQ) which allows ray tracing was applied to detect the recoiling deuterons and reconstruct their momenta. The measured anisotropies are between 0.008 and 0.29, indicating the importance of p -wave amplitudes even close to threshold. The presented data support the validity of isospin and time reversal symmetries.

Published
1997
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13. Total and Differential Cross Sections ofp+p→π++dReactions Down to 275 keV above Threshold

Author

T. Kutsarova, S. Kliczewski, G. Lippert, S. Igel, K. Kilian, M. Drouchner, K. Zwoll, C. Nake, A. Strzałkowski, R. Jahn, P. von Rossen, R. Tsenov, P. A. Zolnierczuk, D. Frekers, B. Razen, Jerzy Smyrski, D. Kolev, Günter Kemmerling, L. Freindl, M. Hawash, W. Klimala, S. Foertsch, R. Maier, W. Garske, J. Ernst, Hartmut Machner, R. Siudak, K. Scho, and L. Jarczyk

Subjects
Physics, Pion, Meson, Hadron, General Physics and Astronomy, Elementary particle, Charge (physics), Center of mass, Symmetry breaking, Atomic physics, Charged particle
Abstract

The {ital p}+{ital p}{r_arrow}{pi}{sup +}+{ital d} reaction is studied at excess energies between 0.275 and 3.86 MeV. Differential and total cross section were measured employing a magnetic spectrometer with nearly 4{pi} acceptance in the center of mass system. The measured anisotropies between 0.008 and 0.29 indicate that the {ital p} wave is not negligible even so close to threshold. The data are compared to other data offering no evidence for charge symmetry breaking or time reversal violation. The {ital s}-wave and {ital p}-wave contributions at threshold are deduced. {copyright} {ital 1996 The American Physical Society.}

Published
1996
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14. Performance of a wall-less drift chamber for muon detection

Author

Hans Reithler, H. Schwarthoff, H. Faissner, H. Tuchscherer, H. Teykal, H. Wagner, T. Moers, and B. Razen

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Muon, Large Hadron Collider, Physics::Instrumentation and Detectors, Instrumentation, Beam (structure), Magnetic field, Muon detector
Abstract

We present results on an intensive study of a muon detector prototype designed for an experiment at the LHC. The chamber has eight layers of drift tubes measuring one projection of a muon track, and was tested with cosmic and beam muons and in a magnetic field. Single hit detection efficiencies of 99.9% for all gas mixtures and single hit resolutions of 190 μm for the preferred gas mixture of Ar/CO 2 80% / 20% were achieved. In a magnetic field of 3 T the single hit resolution with this gas mixture decreased by 10%.

Published
1995
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15. Modular wall-less drift chamber for muon detection at the LHC

Author

B. Razen, Hans Reithler, D. Samm, D. Rein, R Priem, H. Tuchscherer, T. Moers, H. Schwarthoff, H. Faissner, H. Wagner, and R. Schleichert

Subjects
Physics, Nuclear and High Energy Physics, Muon, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Track (disk drive), Resistive plate chamber, Modular design, Momentum, Nuclear physics, Time of arrival, High Energy Physics::Experiment, business, Instrumentation, Muon detector
Abstract

We present a concept of a muon detector well suited for an experiment at the LHC. The muon traverses four chambers, each consisting of ten layers of drift tubes which measure the track segments in two projections, and of two layers of a resistive plate chamber (RPC) which provide locally the time of arrival of the particle. For the muon momentum determination, each track segment is measured with an accuracy of 0.1 mm. First laboratory measurements with a small prototype have been performed.

Published
1993
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16. THE π0 - η MESON MIXING AND ISOSPIN SYMMETRY BREAKING

Author

D. Kolev, A. Budzanowski, A. Magiera, D. Kirilov, A. Strzałkowski, R. Tsenov, M. Uličný, J. Ernst, Jerzy Smyrski, R. Siudak, T. Kutsarova, J. Urban, B. J. Roy, M. Kravcikova, J. Bojowald, St. Kistryn, A. Chatterjee, W. Klimala, L. Jarczyk, P. Hawranek, J. Lieb, L. Freindl, N.M. Piskunov, D. Frekers, J. Ilieva, Lubomir Pentchev, S. Kliczewski, Hartmut Machner, P. von Rossen, I.M. Sitnik, A. Wrońska, G. Martinska, D. Protic, K. Kilian, and B. Razen

Subjects
Physics, Particle physics, Explicit symmetry breaking, Rho meson, Meson, Isospin, Spontaneous symmetry breaking, Eta meson, Symmetry breaking, Chiral symmetry breaking
Published
2003
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17. Measurement of thepp→ppπ0reaction at 850MeV/cand partial wave cross sections

Author

Lubomir Pentchev, A. Strzałkowski, M G Betigeri, A. Budzanowski, K. Zwoll, T. Kutsarova, W. Garske, K. Kilian, R. Siudak, K. Grewer, D. Kolev, L. Freindl, J. Ilieva, A. Magiera, A. Hamacher, J. Lieb, J.A. Niskanen, D. Prasuhn, P. von Rossen, D. Frekers, R. Maier, R. Tsenov, J. Bojowald, H. Nann, S. Kliczewski, B. J. Roy, Hartmut Machner, J. Ernst, D. Protic, L. Jarczyk, W. Klimala, B. Razen, and A. Chatterjee

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Pion, Meson, Hadron, Elementary particle, Boson
Published
2002
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18. MESON PRODUCTION IN <font>P</font>+<font>D</font> REACTIONS

Author

B. Razen, A. Magiera, L. Jarczyk, D. Protic, A. Hamacher, Lubomir Pentchev, T. Kutsarova, J. Ernst, K. Kilian, M G Betigeri, H.S. Plendl, S. Kliczewski, P. von Rossen, A. Strzalkowski, J. Lieb, H. Machner, D. Frekers, R. Tsenov, B. J. Roy, K. Grewer, J. Ilieva, J. Bojowald, A. Budzanowski, K. Zwoll, L. Freindl, H. Nann, W. Klimala, D. Kolev, A. Chatterjee, R. Siudak, and W. Garske

Subjects
Physics, Particle physics, Meson production
Published
2001
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19. Differential cross sections measurement for thepp→dπ+reaction at850MeV/c

Author

W. Garske, R. Tsenov, P. von Rossen, K. Kilian, W. Klimala, L. Jarczyk, K. Grewer, T. Kutsarova, D. Kolev, R. Siudak, K. Zwoll, J. Ilieva, Hartmut Machner, J. Lieb, J. Ernst, A. Chatterjee, Lubomir Pentchev, B. Razen, A. Strzałkowski, M G Betigeri, A. Hamacher, L. Freindl, A. Magiera, B. J. Roy, D. Protic, J. Bojowald, H. Nann, S. Kliczewski, A. Budzanowski, and D. Frekers

Subjects
Physics, Nuclear physics, Scattering cross-section, Nuclear and High Energy Physics, media_common.quotation_subject, Pi, Contrast (vision), Anisotropy, media_common
Abstract

The present data support a large anisotropy in accordance with phase shift predictions and in contrast to another recent experiment.

Published
2001
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20. Measurement of momentum and angular distribution of punchthrough muons at the RD5 experiment

Author

E. Dénes, Gyorgy Vesztergombi, R. Santonico, A. Rojkov, J. G. Layter, T. Wijnen, H. Wagner, G. Ciapetti, H. Schwarthoff, G.W. Wilson, Alain Hervé, S. Otwinowski, Albert Ferrando, B. Razen, M. Verzocchi, H. Teykal, T. Moers, P Zotto, Ritva Kinnunen, Marcin Konecki, Carlo Civinini, Domizia Orestano, G. Margutti, B. C. Shen, A. Di Ciaccio, M. Juntunen, G. Walzel, Carmen Albajar, Anna Teresa Meneguzzo, H. Tolsma, C. Brouwer, C. Lyndon, Jan Krolikowski, Alexander Malinin, A. Iglesias, C. Bacci, R. Bergman, D. Chrisman, H. van der Graaf, Francesco Lacava, Raffaello D'Alessandro, Yu. Kolotaev, V. Pojidaev, Marco Meschini, James Shank, C. Pols, H. Tuchscherer, Claudia-Elisabeth Wulz, A. Arefiev, Hans Reithler, R. R. McNeil, H. Faissner, S. Centro, M. Pimiä, Veikko Karimäki, F. Szoncso, Roberto Cardarelli, A. Kluge, M. Andlinger, W. Gorn, E. Radermacher, Axel König, L. Martinez-Laso, G. Wrochna, L. Zanello, M. Szeptycka, M. Mohammadi-Baarmand, Tuure Tuuva, P. Casoli, David B. Cline, Ludovico Pontecorvo, K. Österberg, M. Della Negra, R. Martinelli, W. Dominik, Emilio Petrolo, Christopher Seez, Maciej Górski, A. Sanjari, Stefano Veneziano, E. Choumilov, Filippo Ceradini, P. Le Coultre, Gy L. Bencze, Andrea Bizzeti, P. Porth, Aleandro Nisati, P. Sartori, R. Ribeiro, Jorma Tuominiemi, Maria Cruz Fouz, Albajar, C, Andlinger, M, Arefiev, A, Bacci, C, Bencze, Gl, Bergman, R, Bizzeti, A, Brouwer, C, Cardarelli, R, Casoli, P, Centro, S, Ceradini, Filippo, Choumilov, E, Chrisman, D, Ciapetti, G, Civinini, C, Cline, D, Dalessandro, R, Dellanegra, M, Denes, E, Diciaccio, A, Dominik, W, Faissner, H, Ferrando, A, Fouz, Mc, Gorn, W, Gorski, M, Herve, A, Iglesias, A, Juntunen, M, Karimaki, V, Kinnunen, R, Kluge, A, Kolotaev, Y, Konecki, M, Konig, Ac, Krolikowski, J, Lacava, F, Layter, Jg, Lecoultre, P, Lyndon, C, Malinin, A, Margutti, G, Martinelli, R, Martinezlaso, L, Mcneil, R, Meneguzzo, A, Meschini, M, Moers, T, Mohammadibaarmand, M, Nisati, A, Orestano, Domizia, Osterberg, K, Otwinowski, S, Petrolo, E, Pimia, M, Pojidaev, V, Pols, Cla, Pontecorvo, L, Porth, P, Radermacher, E, Razen, B, Reithler, H, Ribeiro, R, Rojkov, A, Sanjari, A, Santonico, R, Sartori, P, Schwarthoff, H, Seez, C, Shank, J, Shen, Bc, Szeptycka, M, Szoncso, F, Teykal, H, Tolsma, H, Tuchscherer, H, Tuominiemi, J, Tuuva, T, Vandergraaf, H, Veneziano, S, Verzocchi, M, Vesztergombi, G, Wagner, H, Walzel, G, Wijnen, T, Wilson, Gw, Wrochna, G, Wulz, Ce, Zanello, L, and Zotto, P.

Subjects
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, hadronic showers, Monte Carlo method, muons, 7. Clean energy, 01 natural sciences, Nuclear physics, Momentum, 0103 physical sciences, Detectors and Experimental Techniques, 010306 general physics, Instrumentation, particle interaction, Physics, Muon, Toroid, Calorimeter (particle physics), Spectrometer, 010308 nuclear & particles physics, Magnetic field, Physics::Accelerator Physics, High Energy Physics::Experiment, Beam (structure)
Abstract

The momentum and angular distributions of punchthrough muons have been measured after a 10 λ calorimeter using an iron toroid magnet with 1.5 T as spectrometer. The calorimeter was inside a variable magnetic field of 0 to 3 T. The incident momentum of the π − beam ranged from 20 to 300 GeV/ c . Measurements were also done at some beam momenta for π + , K + and p. The results are compared with Monte Carlo predictions. A parameterization for the momentum spectrum of punchthrough muons was derived from the data.

Published
1995

21. Electromagnetic secondaries in the detection of high energy muons

Author

S. Otwinowski, I. Gramenitsky, Alessandro Bettini, Gyorgy Vesztergombi, P. Casoli, Alexander Malinin, J. G. Layter, T. Wijnen, Aleandro Nisati, Francesco Lacava, Jan Krolikowski, C.-E. Wulz, D. Rein, D. Chrisman, R. Ribeiro, Raffaello D'Alessandro, G. Ciapetti, H. Schwarthoff, Domizia Orestano, A. Rojkov, Veikko Karimäki, A. van Yashin, David B. Cline, K. Osterberg, Jorma Tuominiemi, Maria Cruz Fouz, S. Centro, M. Verzocchi, G. Walzel, Alexander Kluge, Alain Hervé, Pierluigi Zotto, I. Lippi, H. Tuchscherer, Filippo Ceradini, Axel König, Albert Ferrando, Vadim Gratchev, Marco Meschini, P. Sartori, Vladimir Karjavin, J.P. Saarikko, H. Tolsma, Paolo Giacomelli, Anna Teresa Meneguzzo, Roberto Cardarelli, F. Gasparini, S. P. Whitaker, G. Wrochna, R. Labner, B. Razen, Carmen Albajar, Carlo Civinini, A. Iglesias, Ritva Kinnunen, Gy L. Bencze, Andrea Bizzeti, P. Porth, M. Pimiä, R. Santonico, Venetios Polychronakos, Tuure Tuuva, R. Bergman, M. Juntunen, A. Diciaccio, Hans Reithler, C. Bacci, Anatoli Zarubin, C. Brouwer, M. Voutilainen, W. Gorn, Ludovico Pontecorvo, E. Radermacher, R. Martinelli, Yu. Kolotaev, V. Pojidaev, Marcin Konecki, E. Dénes, S. Selunin, R. Lauhakangas, V. Tcherniatine, B. C. Shen, M. Szeptycka, T. Moers, F. Szoncso, E. Choumilov, Igor Golutvin, Christopher Seez, Maciej Górski, H. van der Graaf, M. Mohammadi, H. Teykal, A. Arefiev, R. R. McNeil, P. Moissenz, M. Andlinger, W. Dominik, Emilio Petrolo, C. Pols, C. Lyndon, Stefano Veneziano, H. Wagner, M. Dellanegra, James Shank, H. Faissner, and L. Zanello

Subjects
Physics, Nuclear and High Energy Physics, High energy, Large Hadron Collider, Muon, Physics::Instrumentation and Detectors, Detector, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment, Collider, Instrumentation
Abstract

The experiments at the planned 14 TeV proton-proton collider LHC will need a good identification and measurement of muons with energies of up to about 800 GeV. The production of electromagnetic secondaries by muons of energy from 10 to 300 GeV has been measured at the RD5 experiment at CERN using various detector types proposed for LHC experiments. It is demonstrated that the detectors can recognize the presence of individual hits from em secondaries, and that the muon measurement would be seriously compromised if these hits are not suppressed.

Published
1994

22. Drochneret al.Reply

Author

T. Kutsarova, C. Nake, J. Ernst, K. Zwoll, Matthias Drochner, H. Machner, K. Kilian, R. Maier, K. Scho, Jerzy Smyrski, M. Hawash, L. Freindl, A. Strzalkowski, R. Jahn, P. A. Zolnierczuk, G. Lippert, S. V. Förtsch, R. Tsenov, B. Razen, Günter Kemmerling, W. Klimala, P. von Rossen, D. Kolev, S. Kliczewski, R. Siudak, W. Garske, D. Frekers, S. Igel, and L. Jarczyk

Subjects
Economics, General Physics and Astronomy
Published
1999
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