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1. The HERMES spectrometer

Author

K. Ackerstaff, A. Airapetian, N. Akopov, M. Amarian, V. Andreev, E.C. Aschenauer, R. Avakian, H. Avakian, A. Avetissian, B. Bains, S. Barrow, W. Beckhusen, M. Beckmann, St. Belostotski, E. Belz, Th. Benisch, S. Bernreuther, N. Bianchi, J. Blouw, H. Böttcher, A. Borissov, J. Brack, B. Braun, B. Bray, S. Brons, W. Brückner, A. Brüll, H.J. Bulten, G.P. Capitani, P. Carter, P. Chumney, E. Cisbani, S. Clark, S. Colilli, H. Coombes, G.R. Court, P. Delheij, E. Devitsin, C.W. de Jager, E. De Sanctis, D. De Schepper, P.K.A. de Witt Huberts, P. Di Nezza, M. Doets, M. Düren, A. Dvoredsky, G. Elbakian, J. Emerson, A. Fantoni, A. Fechtchenko, M. Ferstl, D. Fick, K. Fiedler, B.W. Filippone, H. Fischer, H.T. Fortune, J. Franz, S. Frullani, M.-A. Funk, N.D. Gagunashvili, P. Galumian, H. Gao, Y. Gärber, F. Garibaldi, G. Gavrilov, P. Geiger, V. Gharibyan, V. Giordjian, F. Giuliani, A. Golendoukhin, B. Grabowski, G. Graw, O. Grebeniouk, P. Green, G. Greeniaus, M. Gricia, C. Grosshauser, A. Gute, J.P. Haas, K. Hakelberg, W. Haeberli, J.-O. Hansen, D. Hasch, O. Hausser, R. Henderson, Th. Henkes, R. Hertenberger, Y. Holler, R.J. Holt, H. Ihssen, A. Izotov, M. Iodice, H.E. Jackson, A. Jgoun, C. Jones, R. Kaiser, J. Kelsey, E. Kinney, M. Kirsch, A. Kisselev, P. Kitching, H. Kobayashi, E. Kok, K. Königsmann, M. Kolstein, H. Kolster, W. Korsch, S. Kozlov, V. Kozlov, R. Kowalczyk, L. Kramer, B. Krause, A. Krivchitch, V.G. Krivokhijine, M. Kueckes, P. Kutt, G. Kyle, W. Lachnit, R. Langstaff, W. Lorenzon, M. Lucentini, A. Lung, N. Makins, V. Maleev, S.I. Manaenkov, K. Martens, A. Mateos, K. McIlhany, R.D. McKeown, F. Meißner, F. Menden, D. Mercer, A. Metz, N. Meyners, O. Mikloukho, C.A. Miller, M.A. Miller, R. Milner, V. Mitsyn, G. Modrak, J. Morton, A. Most, R. Mozzetti, V. Muccifora, A. Nagaitsev, Y. Naryshkin, A.M. Nathan, F. Neunreither, M. Niczyporuk, W.-D. Nowak, M. Nupieri, P. Oelwein, H. Ogami, T.G. O’Neill, R. Openshaw, V. Papavassiliou, S.F. Pate, S. Patrichev, M. Pitt, H.J. Plett, H.R. Poolman, S. Potashov, D. Potterveld, B. Povh, V. Prahl, G. Rakness, V. Razmyslovich, R. Redwine, A.R. Reolon, R. Ristinen, K. Rith, H.O. Roloff, G. Röper, P. Rossi, S. Rudnitsky, H. Russo, D. Ryckbosch, Y. Sakemi, F. Santavenere, I. Savin, F. Schmidt, H. Schmitt, G. Schnell, K.P. Schüler, A. Schwind, T.-A. Shibata, T. Shin, B. Siebels, A. Simon, K. Sinram, W.R. Smythe, J. Sowinski, M. Spengos, K. Sperber, E. Steffens, J. Stenger, J. Stewart, F. Stock, U. Stößlein, M. Sutter, H. Tallini, S. Taroian, A. Terkulov, D. Thiessen, B. Tipton, V. Trofimov, A. Trudel, M. Tytgat, G.M. Urciuoli, R. Van de Vyver, J.F.J. van den Brand, G. van der Steenhoven, J.J. van Hunen, D. van Westrum, A. Vassiliev, M.C. Vetterli, M.G. Vincter, E. Volk, W. Wander, T.P. Welch, S.E. Williamson, T. Wise, G. Wöbke, K. Woller, S. Yoneyama, K. Zapfe-Düren, T. Zeuli, H. Zohrabian, and (Astro)-Particles Physics

Subjects
HERMES experiment, Nuclear and High Energy Physics, Particle physics, semi-inclusive scattering, (e, Physics::Instrumentation and Detectors, Cherenkov detector, CALORIMETERS, FOS: Physical sciences, deep inelastic lepton scattering, (e,e''h), Tracking (particle physics), Particle identification, High Energy Physics - Experiment, INORGANIC MATERIALS, law.invention, High Energy Physics - Experiment (hep-ex), e''h), GAS-MIXTURES, law, Nuclear Experiment, Instrumentation, Physics, Calorimeter (particle physics), Spectrometer, PERFORMANCE, magnetic spectrometer, Deep inelastic scattering, Transition radiation detector, CHAMBERS, High Energy Physics::Experiment
Abstract

The HERMES experiment is collecting data on inclusive and semi-inclusive deep inelastic scattering of polarised positrons from polarised targets of H, D, and He. These data give information on the spin structure of the nucleon. This paper describes the forward angle spectrometer built for this purpose. The spectrometer includes numerous tracking chambers (micro-strip gas chambers, drift and proportional chambers) in front of and behind a 1.3 T.m magnetic field, as well as an extensive set of detectors for particle identification (a lead-glass calorimeter, a pre-shower detector, a transition radiation detector, and a threshold Cherenkov detector). Two of the main features of the spectrometer are its good acceptance and identification of both positrons and hadrons, in particular pions. These characteristics, together with the purity of the targets, are allowing HERMES to make unique contributions to the understanding of how the spins of the quarks contribute to the spin of the nucleon., 37 pages, 32 figures, 4 tables

Published
1998

2. The HERA polarimeter and the first observation of electron spin polarization at HERA

Author

E. Steffens, T. Janke, H.-D. Bremer, H.-Ch. Lewin, P. M. Patel, P.W. Green, W. Brückner, M. Veltri, F. Zetsche, Wolfgang Lorenzon, M. Düren, E. Gianfelice-Wendt, B. Micheel, D. P. Barber, Ch. Büscher, N. Meyners, O. Hausser, K. Zapfe, F. Neunreither, R. D. McKeown, Ross Milner, H. Gressmann, W. Wander, K. J. Coulter, M. Vetterli, H.G. Gaul, K. Rith, D. Westphal, R. Brinkmann, P.P.J. Delheij, M.S. Chapman, Ch. Scholz, L. Losev, W. Vogel, Robert Klanner, M. Lomperski, R. Henderson, M. Böge, W.-D. Nowak, P. Levy, H. Kaiser, A. Mücklich, P. Kitching, and Ralf Kaiser

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Optics, business.industry, Bibliography, Polarimeter, HERA, Polarization (waves), business, Instrumentation
Abstract

Electron spin polarizations of about 8% were observed at HERA in November 1991. In runs during 1992, utilizing special orbit corrections, polarization values close to 60% have been achieved. In this paper the polarimeter, the machine conditions, the data analysis, the first results and plans for future measurements are described.

Published
1993

3. Balint's Syndrome

Author

Françoise Robert, Normand Giard, and Chantal O. Hausser

Subjects
Male, Brain Diseases, medicine.medical_specialty, Eye Movements, medicine.diagnostic_test, business.industry, Computed tomography, Syndrome, General Medicine, Middle Aged, medicine.disease, Fixation (surgical), Bálint's syndrome, nervous system, Neurology, Parietal Lobe, Visual Perception, Humans, Medicine, Occipital Lobe, Neurology (clinical), Radiology, medicine.symptom, business, Simultanagnosia
Abstract

SUMMARY:Balint's syndrome is usually attributed to bilateral parieto-occipital lesions. In several reported cases involvement of the frontal lobes was also documented and could be responsible for the “spasmodic fixation” often recorded in these patients. We report a case of Balint's syndrome in a patient with bilateral frontal and parieto-occipital metastases demonstrated by CTscan and confirmed by postmortem examination.

Published
1980

4. Hydrocephalus and Headaches in Paget’s Disease of the Skull: Complete Relief by Ventriculo-Atrial Shunt

Author

Georges Elie Ouaknine, Jacques Sylvestre, and Chantal O. Hausser

Subjects
Male, medicine.medical_specialty, Ataxia, Disease, Cerebrospinal fluid, Humans, Medicine, Dementia, Aged, business.industry, Skull, Headache, General Medicine, Osteitis Deformans, medicine.disease, Cerebrospinal Fluid Shunts, Surgery, Shunt (medical), Hydrocephalus, Radiography, Shunting, Neurology, Neurology (clinical), Headaches, medicine.symptom, business
Abstract

SUMMARYA 76 year old patient with a long history of headaches was found to have Paget’s disease and communicating hydrocephalus. There were (otherwise) no neurological or musculo-skeletal manifestations of Paget’s disease, but moderate impairment of intellectual function was present. Treatment with disphosphonates did not bring any significant improvement, but three days following a ventriculo-atrial shunting procedure, the patient became headache-free for the first time in several years.In the literature, patients with hydrocephalus have been shown to respond quite unevenly to atrio-ventricular shunting, but in most instances the descriptions concerned advanced cases with well-established symptoms of dementia, ataxia and incontinence. Our case is reported to stress the importance of early diagnosis and management of hydrocephalus in Paget’s disease for the prevention of widespread neurological dysfunction.

Published
1984

5. Falls

Author

M I, Botez and C O, Hausser

Subjects
Adult, Male, Brain Diseases, Epilepsy, Drug-Related Side Effects and Adverse Reactions, Brain Neoplasms, Posture, Middle Aged, Hydrocephalus, Normal Pressure, Syncope, Neurologic Manifestations, Hypotension, Orthostatic, Cataplexy, Muscular Diseases, Accidents, Humans, Female, Aged
Published
1982

6. [Multiple intracranial aneurysms associated with primary hyperaldosteronism]

Author

C O, Hausser, G E, Ouaknine, F, Primeau, and O, Kuchel

Subjects
Male, Radiography, Carotid Arteries, Adolescent, Cerebral Revascularization, Hyperaldosteronism, Hypertension, Humans, Intracranial Aneurysm, Subarachnoid Hemorrhage
Abstract

Multiple intracranial aneurysms have been reported in association with polycystic disease of the kidney, brain tumor, pituitary adenoma and coarctation of the aorta. We report the association of multiple aneurysms with primary hyperaldosteronism due to bilateral adrenal hyperplasia in an 18 year old left-handed man who presented with subarachnoid hemorrhage and arterial hypertension. We report the excellent outcome of this patient in spite of a difficult and surgical management. Ligation of all three intracranial aneurysms was performed after an extra-intracranial arterial bypass was done as a protective measure.

Published
1985

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