29 research outputs found
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
CALICE Report to the DESY Physics Research Committee, April 2011
71 pages, many figures See paper for full list of authors -We present an overview of the CALICE activities on calorimeter development for a future linear collider. We report on test beam analysis results, the status of prototype development and future plans
CALICE Report to the DESY Physics Research Committee, April 2011
71 pages, many figures See paper for full list of authors -We present an overview of the CALICE activities on calorimeter development for a future linear collider. We report on test beam analysis results, the status of prototype development and future plans
Response of the CALICE Si-W electromagnetic calorimeter physics prototype to electrons
A prototype siliconÂżtungsten electromagnetic calorimeter (ECAL) for an international linear collider (ILC) detector was installed and tested during summer and autumn 2006 at CERN. The detector had 6480 silicon pads of dimension View the MathML source. Data were collected with electron beams in the energy range 6Âż45 GeV. The analysis described in this paper focuses on electromagnetic shower reconstruction and characterises the ECAL response to electrons in terms of energy resolution and linearity. The detector is linear to within approximately the 1% level and has a relative energy resolution of View the MathML source. The spatial uniformity and the time stability of the ECAL are also addressed
Study of the interactions of pions in the CALICE silicon-tungsten calorimeter prototype
A prototype silicon-tungsten electromagnetic calorimeter for an ILC detector was tested in 2007 at the CERN SPS test beam. Data were collected with electron and hadron beams in the energy range 8 to 80 GeV. The analysis described here focuses on the interactions of pions in the calorimeter. One of the main objectives of the CALICE program is to validate the Monte Carlo tools available for the design of a full-sized detector. The interactions of pions in the Si-W calorimeter are therefore confronted with the predictions of various physical models implemented in the GEANT4 simulation framework
Effects of high-energy particle showers on the embedded front-end electronics of an electromagnetic calorimeter for a future lepton collider
Application Specific Integrated Circuits, ASICs, similar to those envisaged
for the readout electronics of the central calorimeters of detectors for a
future lepton collider have been exposed to high-energy electromagnetic
showers. A salient feature of these calorimeters is that the readout
electronics will be embedded into the calorimeter layers. In this article it is
shown that interactions of shower particles in the volume of the readout
electronics do not alter the noise pattern of the ASICs. No signal at or above
the MIP level has been observed during the exposure. The upper limit at the 95%
confidence level on the frequency of faked signals is smaller than 1x10^{-5}
for a noise threshold of about 60% of a MIP. For ASICs with similar design to
those which were tested, it can thus be largely excluded that the embedding of
the electronics into the calorimeter layers compromises the performance of the
calorimeters
Hadronic energy resolution of a highly granular scintillator-steel hadron calorimeter using software compensation techniques
The energy resolution of a highly granular 1 m3 analogue scintillator-steel
hadronic calorimeter is studied using charged pions with energies from 10 GeV
to 80 GeV at the CERN SPS. The energy resolution for single hadrons is
determined to be approximately 58%/sqrt(E/GeV}. This resolution is improved to
approximately 45%/sqrt(E/GeV) with software compensation techniques. These
techniques take advantage of the event-by-event information about the
substructure of hadronic showers which is provided by the imaging capabilities
of the calorimeter. The energy reconstruction is improved either with
corrections based on the local energy density or by applying a single
correction factor to the event energy sum derived from a global measure of the
shower energy density. The application of the compensation algorithms to Geant4
simulations yield resolution improvements comparable to those observed for real
data.Comment: 26 pages, 14 figure