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18 results on '"J. Konijn"'

1. Capillary detectors for high resolution tracking

Author

V. E. Tyukov, S.V. Golovkin, V.G. Vasil'chenko, Pierre Vilain, A.M. Medvedkov, Henry T. Wong, J.L. Vischers, Salvatore Buontempo, T. Wolff, J. Panman, A. Frenkel, G. Fiorillo, F. Garufi, Gianni Penso, G. Martellotti, Kerstin Hoepfner, Gaston Wilquet, J. Konijn, J. Goldberg, Yu.P. Petukhov, P. Annis, Antonio Ereditato, K. Winter, I. E. Kreslo, D. Bonekämper, E.N. Kozarenko, C. Mommaert, D. Frekers, D. Rondeshagen, A. Bay, Jean-Paul Fabre, F. Galeazzi, B. Liberti, P., Anni, A., Bay, D., Bonekamper, S., Buontempo, A., Ereditato, J. P., Fabre, Fiorillo, Giuliana, D., Freker, A., Frenkel, F., Galeazzi, Garufi, Fabio, J., Goldberg, S., Golovkin, K., Hoepfner, J., Konijn, E., Kozarenko, I., Kreslo, B., Liberti, G., Martellotti, A., Medvedkov, C., Mommaert, J., Panman, G., Penso, Y., Petukhov, D., Rondeshagen, V., Tyukov, V., Vasilchenko, P., Vilain, J. L., Vischer, G., Wilquet, K., Winter, T., Wolff, and H., Wong

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Image intensifier, Scintillator, Tracking (particle physics), Atomic and Molecular Physics, and Optics, Particle detector, law.invention, CORE SCINTILLATING FIBERS, Optics, Neutrino detector, law, Scintillation counter, business, Image resolution
Abstract

We present a new tracking device based on glass capillary bundles or layers filled with highly purified liquid scintillator and read out at one end by means of image intensifiers and CCD devices. A large-volume prototype consisting of 5 x 10(5) capillaries with a diameter of 20 mu m and a length of 180 cm and read out by a megapixel CCD has been tested with muon and neutrino beams at CERN. With this prototype a two track resolution of 33 mu m was achieved with passing through muons. Images of neutrino interactions in a capillary bundle have also been acquired and analysed. Read-out chains based on Electron Bombarded CCD (EBCCD) and image pipeline devices are also investigated. Preliminary results obtained with a capillary bundle read out by an EBCCD are presented.

Published
1997

2. Status report on CHORUS experiment at CERN

Author

B. Saitta, J. S. Song, M. Serin-Zeyrek, Shigeki Aoki, N. Armenise, A. Ereditato, Kimio Niwa, P. Gorbunov, H. Øverås, W. Flegel, C.A.F.J. van der Poel, J. L. Visschers, Alfredo G. Cocco, E. Eskut, M. de Jong, M. Kazuno, G. Grella, I. Tezuka, P. Zucchelli, J. Konijn, Ramazan Sever, Jürgen Brunner, D. Rondeshagen, V. Khovansky, I. G. Park, Osamu Sato, M. Gruwe, K. Niu, Denis Favart, C. Luppi, D. Macina, R. Meijer Drees, Kazuma Nakazawa, R. Beyer, P. F. Loverre, R. Santacesaria, K. Winter, T. Patzak, V. Shamanov, H. Chikawa, P. Lendermann, G. Grégoire, G. Romano, Antonio Capone, Yoshihiro Sato, Franco Meddi, K. Hoshino, G. Rosa, Gaston Wilquet, P. Tolun, Pierre Vilain, Makoto Kobayashi, D. Bonekämper, M. T. Muciaccia, H. Shibuya, L. Michel, G. Piredda, K.S. Chung, S. Di Liberto, Jean-Paul Fabre, F. Marchetti-Stasi, K. Nakamura, I. T. Lim, M. G. Catanesi, E. Di Capua, R. Ferreira, Vincent Lemaitre, Toshiyuki Nakano, S. Ricciardi, T. Hara, J. Panman, V. Smirnitsky, Y. Nakamura, M. Nakamura, D. De Pedis, Koichi Kodama, E. Arik, Gulsen Onengut, J. Y. Kim, M.A. Mazzoni, Salvatore Buontempo, Henry T. Wong, U. Dore, C. Mommaert, C. H. Hahn, D. Frekers, Alexandre Rozanov, S. Simone, T. Okusawa, P. Strolin, E. Pesen, G. Stefanini, M. Teranaka, A. Mailov, Mehmet Zeyrek, P. Migliozzi, A. Artamonov, G. Fiorillo, V. Palladino, X. Lauwerys, N. Ushida, F. Riccardi, Kerstin Hoepfner, E., Arik, N., Armenise, S., Aoki, A., Artamonov, R., Beyer, J., Brunner, S., Buontempo, M. G., Catanesi, H., Chikawa, K. S., Chung, A., Cocco, A., Capone, M., Dejong, D., Depedi, E., Dicapua, S., Diliberto, U., Dore, A., Ereditato, E., Eskut, J. P., Fabre, D., Favart, R., Ferreira, Fiorillo, Giuliana, W., Flegel, D., Freker, P., Gorbunov, G., Gregoire, G., Grella, M., Gruwe, C. H., Hahn, T., Hara, K., Hoepfner, K., Hoshino, M., Kazuno, J. Y., Kim, M., Kobayashi, K., Kodama, J., Konijn, V., Khovansky, X., Lauwery, V., Lemaitre, P., Lendermann, I. T., Lim, C., Luppi, P. F., Loverre, D., Macina, A. A., Mailov, F., Marchettistasi, M. A., Mazzoni, F., Meddi, R. M., Dree, L., Michel, P., Migliozzi, C., Mommaert, M. T., Muciaccia, K., Nakamura, M., Nakamura, Y., Nakamura, T., Nakano, K., Nakazawa, K., Niu, K., Niwa, T., Okusawa, G., Onengut, H., Overa, Palladino, Vittorio, J., Panman, I. G., Park, T., Patzak, E., Pesen, G., Piredda, F., Riccardi, S., Ricciardi, G., Romano, D., Rondeshagen, G., Rosa, A., Rozanov, B., Saitta, R., Santacesaria, O., Sato, Y., Sato, M., Serinzeyrek, R., Sever, V., Shamanov, H., Shibuya, S., Simone, V., Smirnitsky, J. S., Song, G., Stefanini, P., Strolin, M., Teranaka, I., Tezuka, P., Tolun, N., Ushida, C. A., F., P., Vilain, J. L., Visscher, G., Wilquet, K., Winter, H., Wong, M. T., Zeyrek, P., Zucchelli, and Other Research IHEF (IoP, FNWI)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, WA95/CHORUS, biology, Physics::Instrumentation and Detectors, Oscillation, Detector, Chorus, WA95/CHORUS, neutrino oscillation, Neutrino beam, Status report, biology.organism_classification, Physics::Accelerator Physics, neutrino oscillation, High Energy Physics::Experiment, Wide band, Instrumentation, Order of magnitude
Abstract

The WA95/CHORUS experiment at CERN is a dedicated nu(mu)-nu(tau) oscillation search experiment. Using the wide band neutrino beam of the CERN-SPS accelerator, with an exposure of 2.4 X 10(19) protons on the target, this experiment will explore the domain of small mixing angles down to sin(2) 2 theta(mu tau) approximate to 3 X 10(-4) for mass differences Delta m(2) > 1 eV(2), more than one order of magnitude better than the current limits. The conceptual design of the CHORUS experiment and data on the detector performances are reported.

Published
1995

3. The CHORUS scintillating fiber tracker and opto-electronic readout system

Author

M. Gruwe, Osamu Sato, F. Riccardi, Kimio Niwa, Kerstin Hoepfner, D. Rondeshagen, R. Pintus, Denis Favart, Henry T. Wong, G. Van Beek, Shigeki Aoki, J. Panman, R. Meijer Drees, J. Dupraz, L. Michel, P. Lendermann, Ch. Weinheimer, Toshiyuki Nakano, J. Hérin, P. Nappey, J. Konijn, T. Kozaki, J. Dupont, P. Annis, Jean-Paul Fabre, D. Macina, E. Niu, Pierre Vilain, K. Winter, P. Lamonte, G. Grégoire, G. Brooijmans, G. Stefanini, M. Nakamura, W. Flegel, S. Reynaud, M. Vander Donckt, Vincent Lemaitre, K. Nakamura, Jürgen Brunner, Makoto Kobayashi, Gaston Wilquet, C. Mommaert, and D. Frekers

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Scintillating fiber, biology, Physics::Instrumentation and Detectors, business.industry, Detector, Chorus, Physics::Optics, biology.organism_classification, Nuclear physics, Optics, Opto electronic, High Energy Physics::Experiment, Neutrino oscillation, business, Instrumentation
Abstract

A scintillating fiber tracker system consisting of more than one million fibers has been successfully constructed and made operational for the CERN WA95/CHORUS experiment. The design and construction of the tracker system as well as its opto-electronic readout are described. The performance of the detector with high-energy muons is presented.

Published
1998

4. Scintillating fiber trackers with optoelectronic readout for the CHORUS neutrino experiment

Author

G. Grégoire, R. Pintus, M. Gruwe, Shigeki Aoki, B. Friend, J. Dupont, G. Van Beek, H. Heynitz, W. Flegel, Henry T. Wong, Kimio Niwa, S. Reynaud, P. Nappey, K. Winter, K. Hiller, F. Riccardi, P. Lendermann, J. Konijn, J. L. Visschers, R. Meijer Drees, Vincent Lemaitre, K. Höpfner, M. Nakamura, J. Panman, L. Michel, Jean-Paul Fabre, Gaston Wilquet, J. Dupraz, Pierre Vilain, C. Mommaert, D. Frekers, and G. Stefanini

Subjects
Physics, Nuclear and High Energy Physics, Optical fiber, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Detector, Particle detector, law.invention, Optics, law, Scintillation counter, Optoelectronics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Neutrino, Neutrino oscillation, business, Instrumentation, Lepton
Abstract

The CERN WA95/CHORUS collaboration has been constructing a hybrid detector to search for ( ν μ - ν τ )-oscillations. An essential component of the detector is a scintillating fiber tracking system for precise track reconstruction of particles. The physics motivation is explained, and the detector layout, the tracker design, its optoelectronic readout and test beam results are presented.

Published
1994

5. The reactions in the dip region

Author

Z. Papandreou, Albert Zondervan, Th. S. Bauer, J. Konijn, J. J. M. Steijger, Antonio Pellegrino, M.W. Kelder, E. Jans, W.H.A. Hesselink, M. Kruijer, J.M. Mitchell, W. Kim, Jan Visschers, J. R. Calarco, F. W. Hersman, Nasser Kalantar-Nayestanaki, Leon Kester, and P. C. Countryman

Subjects
Physics, Nuclear and High Energy Physics, Electron spectrometer, Proton, Energy transfer, Nuclear Theory, Detector, Momentum transfer, Angular correlation, Position (vector), Physics::Accelerator Physics, Atomic physics, Nuclear Experiment, Conjugate
Abstract

The reactions 12 C (e,e′pp) and 12 C (e,e′p) have been studied at an energy transfer ω = 210 MeV and a momentum transfer ‖q‖ = 267 MeV/c. The angular correlation between two emitted protons has been measured keeping the position of the electron spectrometer and one proton detector fixed, while the position of the other detector was varied around the conjugate angle. A clear signature for the emission of two correlated protons has been observed.

Published
1993

6. A single-photon multichannel detector: The megapixel EBCCD

Author

T. Wolff, V. E. Tyukov, P. Annis, V.N. Govorun, D. Rondeshagen, H. J. Wörtche, F. Garufi, G. Penso, P. Migliozzi, G. Martellotti, B. Liberti, Salvatore Buontempo, Antonio Ereditato, Jean-Paul Fabre, M. Litmaath, J. Goldberg, A. Frenkel, A. V. Ekimov, R. v. Dantzig, C. Currat, K. Winter, Pierre Vilain, D. Bonekämper, Yu.P. Petukhov, A.M. Medvedkov, Henry T. Wong, J. Panman, I. E. Kreslo, Kerstin Hoepfner, E.N. Kozarenko, J. L. Visschers, F. Galeazzi, C. Mommaert, D. Frekers, K. Holtz, Gaston Wilquet, J. Konijn, A. Bay, V.G. Vasil'chenko, S.V. Golovkin, Patti A. Poole , Randal C. Ruchti , Alan D. Bross , Mitchell R. Wayne, P., Anni, A., Bay, D., Bonekamper, S., Buontempo, C., Currat, R., VAN DANTZIG, A. V., Ekimov, A., Ereditato, J. P., Fabre, D., Freker, A., Frenkel, F., Galeazzi, Garufi, Fabio, J., Goldberg, S. V., Golovkin, V. N., Govorun, K., Hoepfner, K., Holtz, J., Konijn, E. N., Kozarenko, I. E., Kreslo, B., Liberti, M., Litmaath, G., Martellotti, A. M., Medvedkov, P., Migliozzi, C., Mommaert, J., Panman, G., Penso, Petukhov, Y. U. P., D., Rondeshagen, V. E., Tyukov, V. G., Vasilchenko, P., Vilain, J. L., Visscher, G., Wilquet, K., Winter, T., Wolff, H., Wong, and H. J., Wortche

Subjects
Physics, Pixel, detector, business.industry, Detector, Image intensifier, Scintillator, Photon counting, Particle detector, Photocathode, law.invention, Optics, law, Scintillation counter, business
Abstract

The CERN RD46 Collaboration is developing a new high resolution tracking detector based on glass capillaries filled with liquid scintillator. In this framework we have built a read-out chain based on a newly developed device: the Megapixel Electron Bombarded CCD (EBCCD). This device is a hybrid image-intensifier tube, with a 1024×1024 pixels CCD chip in place of the phosphor screen. The tube has a 40 mm diameter photocathode, is gateable and zoomable from 0.62 to 1.3. The EBCCD tube is able to detect single photoelectrons, with a signal to noise ratio better than 10. This Megapixel multichannel photon counting device is attractive for many applications in high-energy physics, astrophysics, biomedical diagnostics, and very low-light imaging.

Published
1998

7. A new vertex detector made of glass capillaries

Author

F. Garufi, J. Goldberg, G. Martellotti, F. Galeazzi, A. Bay, I. E. Kreslo, D. Rondeshagen, A.M. Medvedkov, Henry T. Wong, J. Panman, T. Wolff, J. Konijn, Jean-Paul Fabre, G. Fiorillo, E.N. Kozarenko, Kerstin Hoepfner, J. L. Visschers, Gianni Penso, P. Annis, Gaston Wilquet, V. E. Tyukov, C. Mommaert, Salvatore Buontempo, V.G. Vasil'chenko, D. Frekers, S.V. Golovkin, K. Winter, Antonio Ereditato, D. Bonekämper, B. Liberti, Yu.P. Petukhov, A. Frenkel, Pierre Vilain, P., Anni, A., Bay, D., Bonekamper, S., Buontempo, A., Ereditato, J. P., Fabre, Fiorillo, Giuliana, D., Freker, A., Frenkel, F., Galeazzi, Garufi, Fabio, J., Goldberg, S., Golovkin, K., Hoepfner, J., Konijn, E., Kozarenko, I., Kreslo, B., Liberti, G., Martellotti, A., Medvedkov, C., Mommaert, J., Panman, G., Penso, Y., Petukhov, D., Rondeshagen, V., Tyukov, V., Vasilchenko, P., Vilain, J. L., Visscher, G., Wilquet, K., Winter, T., Wolff, and H., Wong

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Capillary action, Track (disk drive), LIQUID SCINTILLATOR, Detector, Resolution (electron density), Sample (graphics), Optics, CORE SCINTILLATING FIBERS, Vertex (curve), High Energy Physics::Experiment, Neutrino, HIGH-RESOLUTION TRACKING, business, Instrumentation
Abstract

We have developed a new detector technique that allows high quality imaging of ionizing particle tracks with very high spatial and time resolution. Central to this technique are liquid-core fibres of about 20 μm diameter read out by an optoelectronic system including a CCD. The fibres act simultaneously as target, detector and light guides. A large-volume prototype, consisting of 5 × 10 5 capillaries of 20 μm diameter and 180 cm length, has been tested in the CERN wide-band neutrino beam. A sample of high-multiplicity neutrino interactions was recorded, demonstrating the imaging quality of this detector. First results from the reconstruction of these events are reported. A track residual of 28 μm and a vertex resolution of 30 μm has been achieved. Future applications of capillary detectors for neutrino and beauty physics are being investigated within the framework of the RD46 collaboration.

Published
1997

8. The CHORUS experiment to search for nu(mu)->nu(tau) oscillation

Author

E. Eskut, A. Kayis, G. Onengut, R. vanDantzig, J. Konijn, R. G. C. , C. A. F., J. W. E., J. L. Visschers, A. S. Ayan, E. Pesen, M. SerinZeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. T. Muciaccia, E. Radicioni, S. Simone, L. Vivolo, D. Eckstein, P. Lendermann, A. MeyerSievers, T. Patzak, K. Winter, P. Righini, B. Saitta, P. Annis, M. Gruwe, C. Mommaert, M. VanderDonckt, B. VandeVyver, P. Vilain, G. Wilquet, E. DiCapua, M. Ferroni, C. Luppi, S. Ricciardi, Y. Ishii, T. Kawamura, M. Kazuno, S. Ogawa, H. Shibuya, R. Beyer, J. Brunner, G. Carnevale, J. P. Fabre, R. Ferreira, W. Flegel, R. Gurin, M. deJong, M. Litmaath, L. Ludovici, D. Macina, R. M. Drees, H. Meinhard, E. Niu, H. Overas, J. Panman, F. Riccardi, A. Rozanov, D. Saltzberg, G. Stefanini, R. Tzenov, C. Weinheimer, H. T. Wong, P. Zucchelli, J. Goldberg, K. Hoepfner, H. Chikawa, E. Arik, I. Birol, A. A. Mailov, C. H. Hahn, H. I. Jang, J. Y. Kim, S. N. Kim, I. G. Park, M. S. Park, J. S. Song, C. S. Yoon, K. Kodama, N. Ushida, S. Aoki, T. Hara, G. Brooijmans, D. Favart, G. Gregoire, J. Herin, V. Lemaitre, A. Artamonov, V. Epstein, P. Gorbunov, V. Khovansky, V. Shamanov, V. Smirnitsky, D. Bonekamper, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Kobayashi, M. Komatzu, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, S. Buontempo, L. Casagrande, A. G. Cocco, N. DAmbrosio, A. Ereditato, F. MarchettiStasi, M. Messina, P. Migliozzi, S. Sorrentino, P. Strolin, K. Nakamura, T. Okusawa, T. Yoshida, A. Capone, D. DePedis, S. DiLiberto, U. Dore, P. F. Loverre, A. Maslennikov, M. A. Mazzoni, F. Meddi, G. Piredda, R. Santacesaria, A. D. Bartolomeo, C. Bozza, G. Grella, G. Iovane, G. Romano, G. Rosa, Y. Sato, I. Tezuka, FIORILLO, GIULIANA, GARUFI, FABIO, PALLADINO, VITTORIO, E., Eskut, A., Kayi, G., Onengut, R., Vandantzig, J., Konijn, R. G. C., C. A. F., J. W., E., J. L., Visscher, A. S., Ayan, E., Pesen, M., Serinzeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, D., Eckstein, P., Lendermann, A., Meyersiever, T., Patzak, K., Winter, P., Righini, B., Saitta, P., Anni, M., Gruwe, C., Mommaert, M., Vanderdonckt, B., Vandevyver, P., Vilain, G., Wilquet, E., Dicapua, M., Ferroni, C., Luppi, S., Ricciardi, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, R., Beyer, J., Brunner, G., Carnevale, J. P., Fabre, R., Ferreira, W., Flegel, R., Gurin, M., Dejong, M., Litmaath, L., Ludovici, D., Macina, R. M., Dree, H., Meinhard, E., Niu, H., Overa, J., Panman, F., Riccardi, A., Rozanov, D., Saltzberg, G., Stefanini, R., Tzenov, C., Weinheimer, H. T., Wong, P., Zucchelli, J., Goldberg, K., Hoepfner, H., Chikawa, E., Arik, I., Birol, A. A., Mailov, C. H., Hahn, H. I., Jang, J. Y., Kim, S. N., Kim, I. G., Park, M. S., Park, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, V., Lemaitre, A., Artamonov, V., Epstein, P., Gorbunov, V., Khovansky, V., Shamanov, V., Smirnitsky, D., Bonekamper, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Kobayashi, M., Komatzu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, S., Buontempo, L., Casagrande, A. G., Cocco, N., Dambrosio, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, F., Marchettistasi, M., Messina, P., Migliozzi, Palladino, Vittorio, S., Sorrentino, P., Strolin, K., Nakamura, T., Okusawa, T., Yoshida, A., Capone, D., Depedi, S., Diliberto, U., Dore, P. F., Loverre, A., Maslennikov, M. A., Mazzoni, F., Meddi, G., Piredda, R., Santacesaria, A. D., Bartolomeo, C., Bozza, G., Grella, G., Iovane, G., Romano, G., Rosa, Y., Sato, and I., Tezuka

Subjects
CALIBRATION, ELECTRON-SCATTERING, LIMITS, HYBRID EXPERIMENT, PARTICLES, NEUTRINO-ELECTRON, CALORIMETER, PERFORMANCE, READOUT, DETECTOR
Abstract

A new experimental apparatus, designed principally for a high sensitivity search for nu( --> mu(tau) oscillation, has been successfully constructed and made operational by the CHORUS Collaboration for the CERN-WA95 experiment. It consists of a large emulsion target, a scintillating fiber tracker system with optoelectronics read-out, an air-core magnet, a set of trigger hodoscopes, a calorimeter based on the lead/scintillating-fiber technique, and a muon spectrometer. The design, construction and performance of the entire apparatus and of the different detectors are described.

Published
1997

9. The CHORUS experiment to search for ν_μ→ν_τ oscillation

Author

K. Hoepfner, Motoaki Miyanishi, P. Annis, A. Capone, G. Grella, E. Niu, Nicola D'Ambrosio, B. Saitta, G. Grégoire, T. Kawamura, Alfredo G. Cocco, Salvatore Buontempo, David Saltzberg, M. Litmaath, Kimio Niwa, Y. Obayashi, F. Riccardi, G. Rosa, E. Arik, R. Santacesaria, U. Dore, Matteo Ferroni, M. G. Catanesi, C. Mommaert, S. Sorrentino, N. Ushida, S. N. Kim, H. Chikawa, Vincent Lemaitre, M. Komatzu, K. Nakamura, F. Marchetti-Stasi, S. Ogawa, D. Frekers, L. Ludovici, J. Panman, D. C. Kim, Franco Meddi, M. Vander Donckt, Mehmet Zeyrek, Koichi Kodama, T. Kozaki, V. Khovansky, E. Pesen, T. Hara, Y. Kotaka, C. H. Hahn, Pierre Vilain, M. S. Park, G. Carnevale, K. Winter, Jean-Paul Fabre, V. Smirnitsky, D. Eckstein, D. Macina, M. Nakamura, D. Rondeshagen, E. Radicioni, Jürgen Brunner, P. Migliozzi, V. Palladino, Ch. Weinheimer, K. Hoshino, R. Gurin, Rudolf Oldeman, D. De Pedis, H. I. Jang, Henry T. Wong, J. W. E. Uiterwijk, R. Beyer, A. Artamonov, M. A. Mazzoni, Y. Ishii, A. S. Ayan, A. Maslennikov, G. Brooijmans, A. Kayis, F. Garufi, P. Lendermann, E. Di Capua, R. Ferreira, T. Yoshida, M. Messina, I. G. Park, G. Iovane, A. Meyer-Sievers, W. Flegel, C. S. Yoon, F. Cassol, Denis Favart, G. Romano, R. Tzenov, H. Øverȧs, R. van Dantzig, A. Di Bartolomeo, M. Serin-Zeyrek, Alexandre Rozanov, S. Simone, G. Fiorillo, H. Meinhard, S. Di Liberto, J. Konijn, V. Epstein, B. Van de Vyver, J. Hérin, A. Mailov, P. Zucchelli, J. S. Song, Shigeki Aoki, H. Shibuya, M. Kazuno, C. Luppi, J. L. Visschers, R. Meijer Drees, T. Patzak, K. Niu, T. Toshito, I. Tezuka, T. Okusawa, P. Strolin, T. Wolff, L. Casagrande, Gulsen Onengut, J. Y. Kim, P. Gorbunov, M. de Jong, J. Goldberg, Osamu Sato, L. Vivolo, Cristiano Bozza, Ramazan Sever, G. Piredda, Yoshihiro Sato, P. Righini, D. Bonekämper, M. T. Muciaccia, N. Armenise, Toshiyuki Nakano, S. Ricciardi, M. Gruwe, Inanc Birol, Antonio Ereditato, V. Shamanov, G. Stefanini, C.A.F.J. van der Poel, E. Eskut, Gaston Wilquet, P. Tolun, Makoto Kobayashi, and P. F. Loverre

Subjects
Physics, Nuclear and High Energy Physics, biology, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Oscillation, Detector, Chorus, biology.organism_classification, Nuclear physics, Nuclear magnetic resonance, Muon spectrometer, Magnet, High Energy Physics::Experiment, Sensitivity (control systems), Neutrino oscillation, Instrumentation
Abstract

A new experimental apparatus, designed principally for a high sensitivity search for ν μ → ν τ oscillation, has been successlly constructed and made operational by the CHORUS Collaboration for the CERN-WA95 experiment. It consists of a large emulsion target, a scintillating fiber tracker system with optoelectronics read-out, an air-core magnet, a set of trigger hodoscopes, a calorimeter based on the lead/scintillating-fiber technique, and a muon spectrometer. The design, construction and performance of the entire apparatus and of the different detectors are described.

Published
1997

10. CHORUS scintillating fiber tracker and optoelectronics readout system

Author

Maarten de Jong, Toshiyuki Nakano, M. Gruwe, Katsu Nakamura, K. Winter, F. Riccardi, Pierre Vilain, J. Konijn, Ch. Weinheimer, G. Brooijmans, Vincent Lemaitre, Gaston Wilquet, D. Rondeshagen, D. Macina, P. Annis, Jean-Paul Fabre, G. Stefanini, J. Panman, R. Meijer Drees, E. Niu, Kerstin Hoepfner, W. Flegel, G. Grégoire, H. Meinhard, Kazuo Niwa, Shigeru Aoki, L. Michel, P. Lendermann, Makoto Kobayashi, J. Hérin, C. Mommaert, Jürgen Brunner, Henry T. Wong, R. Ferreira, D. Frekers, Makoto Nakamura, M. Vander Donckt, and Osamu Sato

Subjects
Physics, Large Hadron Collider, Scintillating fiber, biology, Physics::Instrumentation and Detectors, business.industry, Detector, Chorus, Physics::Optics, Image intensifier, biology.organism_classification, law.invention, Optics, law, Optoelectronics, High Energy Physics::Experiment, business, Image resolution
Abstract

An essential component of the CERN WA95/CHORUS experiment is a scintillating fiber tracker system made up of more than one million scintillating fibers, for the precise track reconstruction of particles. The design and construction of the tracker system as well as its opto-electronics readout are discussed. Performances of the detector are presented.

Published
1995

11. Performance and calibration of the CHORUS scintillating fiber tracker and opto-electronics readout system

Author

H. Meinhard, G. Stefanini, Jean-Paul Fabre, Gaston Wilquet, K. Nakamura, P. Lendermann, M. Gruwe, Makoto Kobayashi, D. Rondeshagen, Kerstin Hoepfner, C. Mommaert, Osamu Sato, Toshiyuki Nakano, P. Annis, J. Panman, M. Nakamura, D. Frekers, J. Konijn, R. Ferreira, E. Niu, M. Vander Donckt, Henry T. Wong, M. de Jong, D. Macina, F. Riccardi, L. Michel, W. Flegel, G. Grégoire, G. Brooijmans, J. Hérin, Jürgen Brunner, Vincent Lemaitre, K. Winter, Kimio Niwa, Shigeki Aoki, Pierre Vilain, and R. Meijer Drees

Subjects
Physics, Nuclear and High Energy Physics, Optical fiber, Large Hadron Collider, business.industry, Physics::Instrumentation and Detectors, Track (disk drive), Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Physics::Optics, Particle detector, law.invention, law, Scintillation counter, Measuring instrument, Calibration, Optoelectronics, High Energy Physics::Experiment, business, Instrumentation, Particle Physics - Experiment
Abstract

An essential component of the CERN WA95/CHORUS experiment is a scintillating fiber tracker system for precise track reconstruction of particles. The tracker design, its opto-electronics readout and calibration system are discussed, Performances of the detector are presented.

Published
1995

12. Scintillating fiber tracker system of the CHORUS experiment

Author

G. Grégoire, Pierre Vilain, Makoto Nakamura, Kazuo Niwa, Jean-Paul Fabre, Vincent Lemaitre, P. Lendermann, Sadao Aoki, L. Michel, W. Flegel, K. Winter, R. Meijerdrees, J. Konijn, G. Stefanini, C. Mommaert, D. Frekers, Henry T. Wong, K. Hoepfner, Gaston Wilquet, and M. Gruwe

Subjects
Physics, Data processing, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Optical engineering, Track (disk drive), Detector, Electrical engineering, Optics, Systems design, High Energy Physics::Experiment, Image sensor, business, Neutrino oscillation
Abstract

The CERN WA95/CHORUS Collaboration has been constructing a detector to search for neutrino oscillations. An essential component of the detector is a scintillating fiber tracker system for precise track reconstruction of particles. An overview of the tracker system design, its opto-electronics readout, data processing and test beam measurements is presented.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Published
1993

13. A broad-range on-line electron spectrometer

Author

J. Konijn, W.L. Posthumus, J.H.S. Andringa, J.L. Maarleveld, G.J. Evens, P.F.A. Goudsmit, H.P. Geerke, and C. Schiebaan

Subjects
Physics, Internal conversion, Electron spectrometer, Spectrometer, Physics::Instrumentation and Detectors, Detector, Solenoid, General Medicine, Atomic physics, Particle detector, Diode, Semiconductor detector
Abstract

Special features of a broad-range high-transmission electron spectrometer, incorporating a solenoid and a Si(Li) detector are described. The source-detector distance is 72 cm. A detector vacuum-lock system makes it possible to maintain the Si(Li) diode at liquid-nitrogen temperature during installation and choose an optimum detector position with respect to the magnetic field. A baffle to separate electrons from positions is described. A brief presentation is given of a cleaning procedure for Si(Li) diodes. An absolute efficiency of 11% of 4π for 481 keV electrons is measured employing a 3 mm thick, 110 mm2 detector. The resolution is 1.3 keV and 2.0 keV fwhm at 92 keV and 975 keV electron energies, respectively. The time spectrum between conversion electrons measured in the solenoid and γ-rays measured with a large-volume Ge(Li) detector shows a slope of a few nanoseconds.

Published
1975

14. A high resolution, large volume Ge(Li)NaI(Tl) compton-suppression spectrometer

Author

P.F.A. Goudsmit, E.W.A. Lingeman, and J. Konijn

Subjects
Physics, Spectrometer, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Resolution (electron density), Analytical chemistry, General Medicine, Radiation, Spectral line, Crystal, Nuclear physics, Full width at half maximum, Electronic anticoincidence
Abstract

A Compton-suppression spectrometer is described, consisting of a NaI(Tl) crystal (⊘ 254 mm, length 229 mm) and a 15% closed-end Ge(Li) detector. The Compton-suppression factor is 9.5; energy resolution and peak-Compton ratio for the 1.33 MeV 60 Co radiation are 1.92 keV fwhm and 420 respectively. In the 100 keV region the resolution is 0.92 keV fwhm. Examples are given of the use for detection of complex γ-ray spectra, of application as an “energy-level spectrometer” and of application for very low-level counting.

Published
1973

15. The decay of 3370As37

Author

J. Konijn, A.P. de Ruiter, and H. Verheul

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Decay scheme, Electron capture, Astrophysics::High Energy Astrophysical Phenomena, Excited state, Detector, Gamma ray, Atomic physics, Spin (physics)
Abstract

The decay of 70 As to 70 Ge was investigated with Ge(Li) detectors. From the single gamma-ray spectrum measured with a 15 cm 3 and a 30 cm 3 Ge(Li) detector, the energies and relative intensities of 66 gamma rays with energies up to 4.4345 MeV were deduced. Several unknown gamma rays were found. With two Ge(Li) detectors (8 cm 3 and 20 cm 3 ), coincidences between the stronger gamma rays were measured. From these data, the decay scheme was constructed and the intensities of the β + and electron capture feeding of the levels deduced. Whenever possible, spin assignments of the excited states of 70 Ge are given.

Published
1968

16. Efficiency calculations for a circular detector viewing a circular radiator

Author

J. Konijn, A. Lauber, and B. Tollander

Subjects
Physics, Optics, Point source, business.industry, Detector, Perpendicular, Isotropic radiator, Radiator (engine cooling), Neutron detection, General Medicine, business, Finite thickness, Particle detector
Abstract

Consider the following geometrical configuration. Neutrons emanating from an isotropic point source hit a circular target. The secondary particles produced are counted by a circular detector. The planes of the radiator and the detector are both perpendicular to the line through their centers and through the point source. In this article the resulting total and differential detection efficiencies are investigated for different types of angular emission distributions of the secondary particles. Both infinitely thin radiators and radiators of finite thickness are considered. Numerical results have been obtained for different values of the radiator thickness, radiator diameter, detector diameter, target-detector distance and target-neutron source distance.

Published
1965

17. Tracking with capillaries and liquid scintillator

Author

J. Panman, J. Goldberg, F. Garufi, Yu.P. Petukhov, Pierre Vilain, Gianni Penso, V. E. Tyukov, A. Bay, G. Chiodi, A.M. Medvedkov, Henry T. Wong, D. Bonekämper, P. Annis, Salvatore Buontempo, T. Wolff, A. Frenkel, F. Galeazzi, G. Fiorillo, Antonio Ereditato, Jean-Paul Fabre, J. L. Visschers, K. Winter, K. Hoepfner, J. Konijn, I. E. Kreslo, G. Martellotti, E.N. Kozarenko, D. Frekers, D. Rondeshagen, S.V. Golovkin, V.G. Vasil'chenko, Gaston Wilquet, A. Solovjov, B. Liberti, P., Anni, A., Bay, D., Bonekamper, S., Buontempo, G., Chiodi, A., Ereditato, J. P., Fabre, Fiorillo, Giuliana, D., Freker, A., Frenkel, F., Galeazzi, Garufi, Fabio, J., Goldberg, S. V., Golovkin, K., Hoepfner, J., Konijn, E., Kozarenko, I., Kreslo, B., Liberti, G., Martellotti, A., Medvedkov, J., Panman, G., Penso, Y., Petukhov, D., Rondeshagen, A., Solovjov, V., Tyukov, V., Vasil'Chenko, P., Vilain, J. L., Visscher, G., Wilquet, K., Winter, T., Wolff, and H., Wong

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Resolution (electron density), Detector, Image intensifier, Electron, Scintillator, READOUT, Tracking (particle physics), Atomic and Molecular Physics, and Optics, law.invention, Optics, law, Neutrino, LARGE-VOLUME, business, FIBERS, Radiation resistance
Abstract

The technique of glass capillaries filled with liquid scintillator allows the reconstruction of ionizing particle tracks with high spatial resolution. Detectors based on this technique consist of coherent arrays of capillaries having diameters of the order of 20 mu m. Light signals are amplified by an optoelectronic chain composed of a series of image intensifiers: the readout is performed through a CCD. The ongoing research in the field of liquid scintillators has led to excellent results in terms of information density (greater than or equal to 5 hits/mm) and radiation resistance (order of 1 MGy). In this paper new results about the effect of ageing and purification of liquid scintillators will be presented. The RD46 collaboration has developed a completely new detector having a readout chain composed of only one image intensifier followed by a new device: a Megapixel Electron Bombarded CCD. First images of neutrino interactions will be shown, together with preliminary measurements of the resolution of the detector.

18. Experimental results from a large volume active target made of glass capillaries and liquid scintillator

Author

J. Panman, A. Frenkel, Jürgen Brunner, F. Riccardi, S.V. Golovkin, M. de Jong, I. E. Kreslo, Gianni Penso, G. Martellotti, F. Galeazzi, Henry T. Wong, G. Grégoire, K. Harrison, Yu.P. Petukhov, M.R. Mondardini, K. Winter, R. Strack, Kerstin Hoepfner, V. E. Tyukov, V. G. Vasilchenko, L. Michel, J. Konijn, W.P. Siegmund, Pierre Vilain, P. Annis, A. Medvedkov, K. Zymin, Salvatore Buontempo, Jean-Paul Fabre, C. Mommaert, E.N. Kozarenko, A.E. Kushnirenko, Gaston Wilquet, and M.A. Mazzoni

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Detector, Scintillator, Tracking (particle physics), Particle detector, Cross section (physics), Optics, Scintillation counter, Measuring instrument, High Energy Physics::Experiment, Neutrino, business, Instrumentation
Abstract

We are investigating the feasibility of high-resolution tracking with an active target made of glass capillaries filled with organic liquid scintillator. This technique allows real time detection of short-lived particle decays. In this paper, we report on experimental results obtained from an active target having 2 × 2 cm2 cross section and 180 cm length, installed in front of the CHORUS detector and exposed to the CERN Wide Band Neutrino Beam. The detector consists of 5.1 × 105 capillaries with 20 μm inner diameter, read out by a single optoelectronic chain and a Megapixel CCD. Details on tests in the neutrino beam will be reported. First neutrino interactions have been detected.

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