C. Regenfus

Publication List Details

Period

1995 - 2009

Number

173

Co-Authors

Evidence for $\pi K$-atoms with DIRAC (2009)

Adeva, B., Afanasyev, L., Allkofer, Y., Amsler, C., Anania, A., Benelli, A., ...

We present evidence for the first observation of electromagnetically bound $\pi^\pm K^\mp$-pairs ($\pi K$-atoms) with the DIRAC experiment at the CERN-PS. The $\pi K$-atoms are produced by the 24...

Development of wavelength shifter coated reflectors for the ArDM argon dark matter detector (2009)

Lightfoot, P. K., Mavrokoridis, K., Regenfus, C., Amsler, C., Badertscher, A., ...

To optimise the design of the light readout in the ArDM 1-ton liquid argon dark matter detector, a range of reflector and WLS coating combinations were investigated in several small setups, where...

Performance studies of the CMS Strip Tracker before installation (2009)

Adam, W, Bergauer, T, Dragicevic, M, Friedl, M, Frühwirth, R, Hansel, S, ...

In March 2007 the assembly of the Silicon Strip Tracker was completed at the Tracker Integration Facility at CERN. Nearly 15% of the detector was instrumented using cables, fiber optics, power...

The Argon Dark Matter Experiment (ArDM) (2008)

Regenfus, C.

The ArDM experiment, a 1 ton liquid argon TPC/Calorimeter, is designed for the detection of dark matter particles which can scatter off the spinless argon nuclei. These events producing a recoiling...

Production of Slow Protonium in Vacuum (2008)

Zurlo, N., Amoretti, M., Amsler, C., Bonomi, G., Carraro, C., Cesar, C. L., ...

We describe how protonium, the quasi-stable antiproton-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion H$_2^+$ in a nested Penning trap...

Design and performance of the silicon sensors for the CMS barrel pixel detector (2008)

Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., Cucciarelli, S., ...

The CMS experiment at the (LHC) includes a hybrid silicon pixel detector for the reconstruction of charged tracks and of the interaction vertices. The barrel region consists of n-in-n sensors with...

8 Meson Spectroscopy at LEAR with the Crystal Barrel 2 Meson Spectroscopy at LEAR with the Crystal Barrel (2007)

C. Amsler, M. Buchler, P. Giarritta, M. Heinzelmann, F. Ould-saada, C. Pietra, ...

The Crystal Barrel experiment started data taking in late 1989 and was completed in autumn 1996 with the closure of LEAR. We collected very large samples of pp annihilations at low energy. The total...

18 Particle Physics at LHC/CMS 4 Particle Physics at LHC/CMS (2007)

C. Amsler, M. Glattli, R. Kaufmann, F. Ould-saada, P. Robmann, C. Regenfus, ...

and the CMS collaboration. In 1995 the Physik-Institut of the University of Zurich joined the CMS collaboration at the Large Hadron Collider. We participate (i) in the development and construction of...

J. Adomeit, B. Kammle, J. Meier, P. Schmidt, R. Seibert, U. Strohbusch (2007)

A. Abele, S. Bischoff, P. Blum, N. Djaoshvili, D. Engelhardt, ...

We present a measurement and partial wave analysis of the final state KLK \Sigma ß \Upsilon of ¯ pp annihilation at rest in liquid hydrogen. This reaction is important for the study of the ¯ KK...

EPJ manuscript No. (2007)

Will Be Inserted, C. Amsler, M. Benayoun, S. Bischo, P. Blum, ...

The three reactions pp ! # ## in proton-antiproton annihilation in #ight at 900 MeV=c are used to search for isoscalar 0 and 2 mesons in the mass range 1000 , 2000 MeV, in particular the f0#1710#....

Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum (2007)

Zurlo, N., Amoretti, M., Amsler, C., Bonomi, G., Carraro, C., Cesar, C. L., ...

We present evidence showing how antiprotonic hydrogen, the quasistable antiproton-proton (pbar-p) bound system, has been synthesized following the interaction of antiprotons with the hydrogen...

Luminescence quenching of the triplet excimer state by air traces in gaseous argon (2007)

Amsler, C., Boccone, V., Buchler, A., Chandrasekharan, R., Regenfus, C., Rochet, J.

While developing a liquid argon detector for dark matter searches we investigate the influence of air contamination on the VUV scintillation yield in gaseous argon at atmospheric pressure. We...

Design and performance of the silicon sensors for the CMS barrel pixel detector (2007)

Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., Cucciarelli, S., ...

The CMS experiment at the LHC includes a hybrid silicon pixel detector for the reconstruction of charged tracks and of the interaction vertices. The barrel region consists of n-in-n sensors with...

CMS physics technical design report, volume II: Physics performance (2007)

Bayatian, G. L., Chatrchyan, S., Hmayakyan, G., Sirunyan, A. M., Adam, W., Bergauer, T., ...

CMS is a general purpose experiment, designed to study the physics of pp collisions at 14 TeV at the Large Hadron Collider ( LHC). It currently involves more than 2000 physicists from more than 150...

Simulation of Heavily Irradiated Silicon Pixel Detectors (2006)

Swartz, M., Chiochia, V., Allkofer, Y., Amsler, C., Bortoletto, D., Cremaldi, L., ...

We show that doubly peaked electric fields are necessary to describe grazing-angle charge collection measurements of irradiated silicon pixel sensors. A model of irradiated silicon based upon two...

Extraction of electric field in heavily irradiated silicon pixel sensors (2006)

Dorokhov, A., Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., ...

A new method for the extraction of the electric field in the bulk of heavily irradiated silicon pixel sensors is presented. It is based on the measurement of the Lorentz deflection and mobility of...

Extraction of electric field in heavily irradiated silicon pixel sensors (2006)

Dorokhov, A., Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., ...

A new method for the extraction of the electric field in the bulk of heavily irradiated silicon pixel sensors is presented. It is based on the measurement of the Lorentz deflection and mobility of...

A double junction model of irradiated silicon pixel sensors for LHC (2006)

Chiochia, V., Swartz, M., Allkofer, Y., Bortoletto, D., Cremaldi, L., Cucclarelli, S., ...

In this paper, we discuss the measurement of charge collection in irradiated silicon pixel sensors and the comparison with a detailed simulation. The simulation implements a model of radiation damage...

Observation, modeling, and temperature dependence of doubly peaked electric fields in irradiated silicon pixel sensors (2006)

Swartz, M., Chiochia, V., Allkofer, Y., Bortoletto, D., Cremaldi, L., Cucciarelli, S., ...

We show that doubly peaked electric fields are necessary to describe grazing-angle charge collection measurements of irradiated silicon pixel sensors. A model of irradiated silicon based upon two...

A double junction model of irradiated silicon pixel sensors for LHC (2006)

Chiochia, V., Swartz, M., Allkofer, Y., Bortoletto, D., Cremaldi, L., Cucclarelli, S., ...

In this paper, we discuss the measurement of charge collection in irradiated silicon pixel sensors and the comparison with a detailed simulation. The simulation implements a model of radiation damage...

Extraction of electric field in heavily irradiated silicon pixel sensors (2006)

Dorokhov, A., Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., ...

A new method for the extraction of the electric field in the bulk of heavily irradiated silicon pixel sensors is presented. It is based on the measurement of the Lorentz deflection and mobility of...

Study of K anti-K resonances in anti-p p ---> K+ K- pi0 at 900-MeV/c and 1640-MeV/c (2006)

Crystal Barrel Collaboration, Amsler, C., Baker, C. A., Barnett, B. M., Batty, C. J., Benayoun, M., ...

ProminentK ¯ K resonances observed in the in-flight annihilation of ¯ pp intoK+K−π0 include f2(1270), f0(1500), f 2 (1525), φ(1680)/ρ(1700) and a state at 1750 MeV/c2...

High Efficiency Detection of Argon Scintillation Light of 128nm Using LAAPDs (2005)

Chandrasekharan, R., Knecht, A., Messina, M., Regenfus, C., Rubbia, A.

The possibility of efficient collection and detection of vacuum ultraviolet light as emitted by argon, krypton, and xenon gas is studied. Absolute quantum efficiencies of large area avalanche...

Observation, modeling, and temperature dependence of doubly peaked electric fields in irradiated silicon pixel sensors (2005)

Swartz, M., Chiochia, V., Allkofer, Y., Bortoletto, D., Cremaldi, L., Cucciarelli, S., ...

We show that doubly peaked electric fields are necessary to describe grazing-angle charge collection measurements of irradiated silicon pixel sensors. A model of irradiated silicon based upon two...

A double junction model of irradiated silicon pixel sensors for LHC (2005)

Chiochia, V., Swartz, M., Allkofer, Y., Bortoletto, D., Cremaldi, L., Cucciarelli, S., ...

In this paper we discuss the measurement of charge collection in irradiated silicon pixel sensors and the comparison with a detailed simulation. The simulation implements a model of radiation damage...

Cold-Antimatter Physics (2005)

Amoretti, ATHENA Collaboration: M., Amsler, C., Bonomi, G., Bowe, P. D., Canali, C., Carraro, C., ...

The CPT theorem and the Weak Equivalence Principle are foundational principles on which the standard description of the fundamental interactions is based. The validity of such basic principles should...

Fluence dependence of charge collection of irradiated pixel sensors (2005)

Rohe, T., Bortoletto, D., Chlochia, V., Cremaldi, L. M., Cucciarelli, S., Dorokhov, A., ...

The barrel region of the CMS pixel detector will be equipped with "n-in-n" type silicon sensors. They are processed on diffusion oxygenated float zone (DOFZ) material, use the moderated...

Simulation of heavily irradiated silicon pixel sensors and comparison with test beam measurements (2005)

Chiochia, V., Swartz, M., Bortoletto, D., Cremaldi, L., Cucciarelli, S., Dorokhov, A., ...

Charge collection measurements performed on heavily irradiated p-spray DOFZ pixel sensors with a grazing angle hadron beam provide a sensitive determination of the electric field within the...

The effect of highly ionising particles on the CMS silicon strip tracker (2005)

Adam, W., Bergauer, T., Friedl, M., Fruehwirth, R., Hrubec, J., Krammer, M., ...

Inelastic nuclear collisions of hadrons incident on silicon sensors can generate secondary highly ionising particles (HIPs) and deposit as much energy within the sensor bulk as several hundred...

The effect of highly ionising particles on the CMS silicon strip tracker (2005)

Adam, W., Bergauer, T., Friedl, M., Fruehwirth, R., Hrubec, J., Krammer, M., ...

Inelastic nuclear collisions of hadrons incident on silicon sensors can generate secondary highly ionising particles (HIPs) and deposit as much energy within the sensor bulk as several hundred...

Simulation of heavily irradiated silicon pixel sensors and comparison with test beam measurements (2005)

Chiochia, V., Swartz, M., Bortoletto, D., Cremaldi, L., Cucciarelli, S., Dorokhov, A., ...

Charge collection measurements performed on heavily irradiated p-spray DOFZ pixel sensors with a grazing angle hadron beam provide a sensitive determination of the electric field within the...

Fluence dependence of charge collection of irradiated pixel sensors (2005)

Rohe, T., Bortoletto, D., Chlochia, V., Cremaldi, L. M., Cucciarelli, S., Dorokhov, A., ...

The barrel region of the CMS pixel detector will be equipped with "n-in-n" type silicon sensors. They are processed on diffusion oxygenated float zone (DOFZ) material, use the moderated p-spray...

The effect of highly ionising particles on the CMS silicon strip tracker (2005)

Adam, W., Bergauer, T., Friedl, M., Fruehwirth, R., Hrubec, J., Krammer, M., ...

Inelastic nuclear collisions of hadrons incident on silicon sensors can generate secondary highly ionising particles (HIPs) and deposit as much energy within the sensor bulk as several hundred...

The effect of highly ionising particles on the CMS silicon strip tracker (2005)

Adam, W., Bergauer, T., Friedl, M., Fruehwirth, R., Hrubec, J., Krammer, M., ...

Inelastic nuclear collisions of hadrons incident on silicon sensors can generate secondary highly ionising particles (HIPs) and deposit as much energy within the sensor bulk as several hundred...

Extraction of electric field in heavily irradiated silicon pixel sensors (2004)

Dorokhov, A., Allkofer, Y., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., ...

A new method for the extraction of the electric field in the bulk of heavily irradiated silicon pixel sensors is presented. It is based on the measurement of the Lorentz deflection and mobility of...

Fluence Dependence of Charge Collection of irradiated Pixel Sensors (2004)

Rohe, T, Bortoletto, D, Chiochia, V, Cremaldi, L M, Cucciarelli, S, Dorokhov, A, ...

The barrel region of the CMS pixel detector will be equipped with ``n-in-n'' type silicon sensors. They are processed on DOFZ material, use the moderated p-spray technique and feature a bias grid....

Fluence Dependence of Charge Collection of irradiated Pixel Sensors (2004)

Rohe, T., Bortoletto, D., Chiochia, V., Cremaldi, L. M., Cucciarelli, S., Dorokhov, A., ...

The barrel region of the CMS pixel detector will be equipped with ``n-in-n'' type silicon sensors. They are processed on DOFZ material, use the moderated p-spray technique and feature a bias grid....

ATHENA : First Production of Cold Antihydrogen and Beyond (2004)

Kellerbauer, A G, Amoretii, M, Amsler, Claude, Bonomi, G, Bowe, P, Canali, C, ...

Atomic systems of antiparticles are the laboratories of choice for tests of CPT symmetry with antimatter. The ATHENA experiment was the first to report the production of copious amounts of cold...

ATHENA -- First Production of Cold Antihydrogen and Beyond (2004)

Kellerbauer, ATHENA Collaboration: A., Amoretti, M., Amsler, C., Bonomi, G., Bowe, P. D., Canali, C., ...

Atomic systems of antiparticles are the laboratories of choice for tests of CPT symmetry with antimatter. The ATHENA experiment was the first to report the production of copious amounts of cold...

Type inversion in irradiated silicon: a half truth (2004)

Swartz, M., Bortoletto, D., Chiochia, V., Cremaldi, L., Cucciarelli, S., Dorokhov, A., ...

Charge collection measurements performed on heavily irradiated p-spray dofz pixel sensors with a grazing angle hadron beam provide a sensitive determination of the electric field within the...

Production of Cold Antihydrogen with ATHENA for Fundamental Studies (2004)

Kellerbauer, A G, Kellerbauer, A G, Amoretti, M, Amsler, Claude, Bonomi, G, Bowe, P, ...

Since the beginning of operations of the CERN Antiproton Decelerator in July 2000, the successful deceleration, storage and manipulation of antiprotons has led to remarkable progress in the...

Production of Cold Antihydrogen with ATHENA for Fundamental Studies (2004)

Kellerbauer, ATHENA Collaboration: A., Amoretti, M., Amsler, C., Bonomi, G., Bowe, P. D., Canali, C., ...

Since the beginning of operations of the CERN Antiproton Decelerator in July 2000, the successful deceleration, storage and manipulation of antiprotons has led to remarkable progress in the...

The ATHENA Antihydrogen Apparatus (2004)

Amoretti, M, Amsler, Claude, Bonomi, G, Bouchta, A, Bowe, P, Carraro, C, ...

The ATHENA apparatus that recently produced and detected the first cold antihydrogen atoms is described. Its main features, which are described herein, are: an external positron accumulator, making...

The First Cold Antihydrogen (2004)

Fujiwara, M C, Amoretti, M, Amsler, Claude, Bonomi, G, Bouchta, A, Bowe, P, ...

Antihydrogen, the atomic bound state of an antiproton and a positron, was produced at low energy for the first time by the ATHENA experiment, marking an important first step for precision studies of...

The First Cold Antihydrogen (2004)

Fujiwara, M. C., Amoretti, M., Amsler, C., Bonomi, G., Bouchta, A., Bowe, P. D., ...

Antihydrogen, the atomic bound state of an antiproton and a positron, was produced at low energy for the first time by the ATHENA experiment, marking an important first step for precision studies of...

Three Dimensional Annihilation Imaging of Antiprotons in a Penning Trap (2004)

Fujiwara, M. C., Amoretti, M., Bonomi, G., Bouchta, A., Bowe, P. D., Carraro, C., ...

We demonstrate three-dimensional annihilation imaging of antiprotons trapped in a Penning trap. Exploiting unusual feature of antiparticles, we investigate a previously unexplored regime in particle...

Detection of antihydrogen annihilations with a Si-micro-strip and pure CsI detector (2004)

Johnson, I, Amoretti, M, Amsler, Claude, Bazzano, G, Bonomi, G, Bouchta, A, ...

In 2002, the ATHENA collaboration reported the creation and detection of cold (~15 K) antihydrogen atoms [1]. The observation was based on the complete reconstruction of antihydrogen annihilations,...

Position dependence of charge collection in prototype sensors for the CMS pixel detector (2004)

Rohe, T., Bortoletto, D., Chiochia, V., Cremaldi, L. M., Cucciarelli, S., Dorokhov, A., ...

This paper reports on the sensor R&D activity for the CMS pixel detector. Devices featuring several design and technology options have been irradiated up to a proton fluence(1) of I X 10(15)...

Tests of silicon sensors for the CMS pixel detector (2004)

Dorokhov, A., Amsel, C., Bortoletto, D., Chiochia, V., Cremaldi, L., Cucciarelli, S., ...

The tracking system of the CMS experiment, currently under construction at the Large Hadron Collider (LHC) at CERN (Geneva, Switzerland), will include a silicon pixel detector providing three spacial...

Sensor Development for the CMS Pixel Detector (2003)

Rohe, T, Bortoletto, Daniela, Chiochia, V, Cremaldi, L M, Cucciarelli, S, Dorkhov, A, ...

This paper reports on a current R&D activity for the sensor part of the CMS pixel detector. Devices featuring several design and technology options have been irradiated up to a proton fluence of 1E15...

Sensor Development for the CMS Pixel Detector (2003)

Rohe, T, Bortoletto, Daniela, Chiochia, V, Cremaldi, L M, Cucciarelli, S, Dorkhov, A, ...

This paper reports on a current R&D activity for the sensor part of the CMS pixel detector. Devices featuring several design and technology options have been irradiated up to a proton fluence of 1E15...

Position Dependence of Charge Collection in Prototype Sensors for the CMS Pixel Detector (2003)

Rohe, T., Bortoletto, D., Chiochia, V., Cremaldi, L. M., Cucciarelli, S., Dorokhov, A., ...

This paper reports on the sensor R&D activity for the CMS pixel detector. Devices featuring several design and technology options have been irradiated up to a proton fluencec of 1E15 n_eq/cm**2 at...

Tests of silicon sensors for the CMS pixel detector:: measurements and results (2003)

Dorokhov, A, Amsler, Claude, Bortoletto, Daniela, Chiochia, V, Cremaldi, L M, Cucciarelli, S, ...

The tracking system of the CMS experiment, currently under construction at the Large Hadron Collider (LHC) at CERN (Geneva, Switzerland), will include a silicon pixel detector providing three spacial...

Tests of silicon sensors for the CMS pixel detector (2003)

Dorokhov, A., Amsler, C., Bortoletto, D., Chiochia, V., Cremaldi, L., Cucciarelli, S., ...

The tracking system of the CMS experiment, currently under construction at the Large Hadron Collider (LHC) at CERN (Geneva, Switzerland), will include a silicon pixel detector providing three spacial...

Positron plasma diagnostics and temperature control for antihydrogen production (2003)

Amoretti, M, Amsler, Claude, Bonomi, G, Bouchta, A, Bowe, P, Carraro, C, ...

Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the plasma density and temperature. We discuss non-destructive...

Positron plasma diagnostics and temperature control for antihydrogen production (2003)

Amoretti, ATHENA Collaboration: M., Amsler, C., Bonomi, G., Bouchta, A., Bowe, P. D., Carraro, C., ...

Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the plasma density and temperature. We discuss non-destructive...

First Production and Detection of Cold Antihydrogen Atoms (2003)

Fujiwara, M C, Amoretti, M, Amsler, Claude, Bonomi, G, Bouchta, A, Bowe, P, ...

The ATHENA experiment recently produced the first atoms of cold antihydrogen. This paper gives a brief review of how this was achieved.

First Production and Detection of Cold Antihydrogen Atoms (2003)

Fujiwara, M. C., Amoretti, M., Amsler, C., Bonomi, G., Bouchta, A., Bowe, P., ...

The ATHENA experiment recently produced the first atoms of cold antihydrogen. This paper gives a brief review of how this was achieved.

Production and detection of cold antihydrogen atoms (2002)

Amoretti, M, Amsler, Claude, Bonomi, G, Bouchta, A, Bowe, P, Carraro, C, ...

A theoretical underpinning of the standard model of fundamental particles and interactions is CPT invariance, which requires that the laws of physics be invariant under the combined discrete...

Producing Slow Antihydrogen for a Test of CPT Symmetry with ATHENA (2002)

Fujiwara, M C, Amoretti, M, Amsler, Claude, Bendiscioli, G, Bonomi, G, Bouchta, A, ...

The ATHENA experiment at the Antiproton Decelerator facility at CERN aims at testing CPT symmetry with antihydrogen. An overview of the experiment, together with preliminary results of development...