7,937 research outputs found
Technical design and performance of the NEMO3 detector
The development of the NEMO3 detector, which is now running in the Frejus
Underground Laboratory (L.S.M. Laboratoire Souterrain de Modane), was begun
more than ten years ago. The NEMO3 detector uses a tracking-calorimeter
technique in order to investigate double beta decay processes for several
isotopes. The technical description of the detector is followed by the
presentation of its performance.Comment: Preprint submitted to Nucl. Instrum. Methods A Corresponding author:
Corinne Augier ([email protected]
A Calibration System for Compton Polarimetry at Linear Colliders
Polarimetry with permille-level precision is essential for future
electron-positron linear colliders. Compton polarimeters can reach negligible
statistical uncertainties within seconds of measurement time. The dominating
systematic uncertainties originate from the response and alignment of the
detector which records the Compton scattered electrons. The robust baseline
technology for the Compton polarimeters foreseen at future linear colliders is
based on an array of gas Cherenkov detectors read out by photomultipliers. In
this paper, we will present a calibration method which promises to monitor
nonlinearities in the response of such a detector at the level of a few
permille. This method has been implemented in an LED-based calibration system
which matches the existing prototype detector. The performance of this
calibration system is sufficient to control the corresponding contribution to
the total uncertainty on the extracted polarisation to better than .Comment: 27 pages, 17 figure
Infrastructure for Detector Research and Development towards the International Linear Collider
The EUDET-project was launched to create an infrastructure for developing and
testing new and advanced detector technologies to be used at a future linear
collider. The aim was to make possible experimentation and analysis of data for
institutes, which otherwise could not be realized due to lack of resources. The
infrastructure comprised an analysis and software network, and instrumentation
infrastructures for tracking detectors as well as for calorimetry.Comment: 54 pages, 48 picture
Highlights of the SLD Physics Program at the SLAC Linear Collider
Starting in 1989, and continuing through the 1990s, high-energy physics
witnessed a flowering of precision measurements in general and tests of the
standard model in particular, led by e+e- collider experiments operating at the
Z0 resonance. Key contributions to this work came from the SLD collaboration at
the SLAC Linear Collider. By exploiting the unique capabilities of this
pioneering accelerator and the SLD detector, including a polarized electron
beam, exceptionally small beam dimensions, and a CCD pixel vertex detector, SLD
produced a broad array of electroweak, heavy-flavor, and QCD measurements. Many
of these results are one of a kind or represent the world's standard in
precision. This article reviews the highlights of the SLD physics program, with
an eye toward associated advances in experimental technique, and the
contribution of these measurements to our dramatically improved present
understanding of the standard model and its possible extensions.Comment: To appear in 2001 Annual Review of Nuclear and Particle Science; 78
pages, 31 figures; A version with higher resolution figures can be seen at
http://www.slac.stanford.edu/pubs/slacpubs/8000/slac-pub-8985.html; Second
version incorporates minor changes to the tex
Calorimeter R&D for the SuperNEMO Double Beta Decay Experiment
SuperNEMO is a next-generation double beta decay experiment based on the
successful tracking plus calorimetry design approach of the NEMO3 experiment
currently running in the Laboratoire Souterrain de Modane (LSM). SuperNEMO can
study a range of isotopes, the baseline isotopes are 82Se and possibly 150Nd.
The total isotope mass will be 100-200 kg. A sensitivity to neutrinoless double
beta decay half-life greater than 10e26 years can be reached which gives access
to Majorana neutrino masses of 50-100 meV. One of the main challenges of the
SuperNEMO R&D is the development of the calorimeter with an unprecedented
energy resolution of 4% FWHM at 3 MeV (Qbb value of 82Se).Comment: Presented at 13th International Conference on Calorimetry in High
Energy Physics (CALOR08), Pavia, Italy, 26-30 May 200
Two Photon Physics at a Future Linear Collider
Some general considerations on a future linear collider and selected topics
of two photon physics measurements which can be performed at such a collider
are presented. This review discusses the total photon-photon cross section, jet
cross sections, structure functions, charm production, the BFKL Pomeron,
pair production, and Higgs production.Comment: 17 pages, 16 figures, Invited talk at the Workshop on photon
interactions and the photon structure, 10-13 September 1998, Lund, Schweden,
to appear in the Proceeding
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