Unnamed: 0 int64 0 41k | title stringlengths 4 274 | category stringlengths 5 18 | summary stringlengths 22 3.66k | theme stringclasses 8
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9,900 | Characterising a Si(Li) detector element for the SIXA X-ray spectrometer | physics.ins-det | The detection efficiency and response function of a Si(Li) detector element
for the SIXA spectrometer have been determined in the 500 eV to 5 keV energy
range using synchrotron radiation emitted at a bending magnet of the electron
storage ring BESSY, which is a primary radiation standard. The agreement
between the meas... | physics |
9,901 | The ring imaging Cherenkov detector for the BRAHMS experiment at RHIC | physics.ins-det | A ring imaging Cherenkov counter, to be read out by four 100-channel PMTs, is
a key element of the BRAHMS experiment. We report here the most recent results
obtained tested at the BNL AGS using several radiator gases, including the
heavy fluorocarbon C4F10. Ring radii were measured for different particles
(pions, muons... | physics |
9,902 | Characterisation of low pressure VPE GaAs diodes before and after 24 GeV/c proton irradiation | physics.ins-det | GaAs Schottky diode detectors have been fabricated upon Low Pressure Vapour
Phase Epitaxial GaAs. The devices were characterised before and after a $1.25
\times 10^{14}$~cm$^{-2}$ 24GeV/c proton fluence. The as fabricated Ti-GaAs
barrier height was measured, via two electrical methods, to be $0.81\pm0.005$
and $0.85\pm... | physics |
9,903 | The effects of radiation on Gallium Arsenide radiation detectors | physics.ins-det | Semi-insulating, undoped, Liquid Encapsulated Czochralski (SI-U LEC) GaAs
detectors have been irradiated with 1MeV neutrons, 24GeV/c protons, and
300MeV/c pions. The maximum fluences used were 6, 3, and 1.8~10$^{14}$
particles/cm$^{2}$ respectively. For all three types of irradiation the charge
collection efficiencies ... | physics |
9,904 | Recent results on GaAs detectors - 137 | physics.ins-det | The present understanding of the charge collection in GaAs detectors with
respect to the materials used and its processing are discussed. The radiation
induced degradation of the charge collection efficiency and the leakage current
of the detectors are summarised. The status of strip and pixel detectors for
the ATLAS e... | physics |
9,905 | An optical readout for a fibre tracker | physics.ins-det | The performance of 16 and 64 channel photomultipliers coupled to
scintillating fibres has been tested. The devices are sensitive to single
photoelectrons, show little gain losses for magnetic fields up to 100 Gauss and
have moderate optical cross-talk. The maximum channel to channel gain
variations reach a factor two f... | physics |
9,906 | The GRAAL high resolution BGO calorimeter and its energy calibration and monitoring system | physics.ins-det | We describe the electromagnetic calorimeter built for the GRAAL apparatus at
the ESRF. Its monitoring system is presented in detail. Results from tests and
the performance obtained during the first GRAAL experiments are given. The
energy calibration accuracy and stability reached is a small fraction of the
intrinsic de... | physics |
9,907 | Radiation Induced Damage in GaAs Particle Detectors | physics.ins-det | The motivation for investigating the use of GaAs as a material for detecting
particles in experiments for High Energy Physics (HEP) arose from its perceived
resistance to radiation damage. This is a vital requirement for detector
materials that are to be used in experiments at future accelerators where the
radiation en... | physics |
9,908 | Preliminary Results for LP VPE X-Ray Detectors | physics.ins-det | Thick epitaxial layers have been grown using Low Pressure Vapour Phase
Epitaxy techniques with low free carrier concentrations . This type of material
is attractive as a medium for X-ray detection, because of its high conversion
efficiency for X-rays in the medically interesting energy range. | physics |
9,909 | AC-coupled GaAs microstrip detectors with a new type of integrated bias resistors | physics.ins-det | Full size single-sided GaAs microstrip detectors with integrated coupling
capacitors and bias resistors have been fabricated on 3'' substrate wafers.
PECVD deposited SiO_2 and SiO_2/Si_3N_4 layers were used to provide coupling
capacitaces of 32.5 pF/cm and 61.6 pF/cm, respectively. The resistors are made
of sputtered C... | physics |
9,910 | Electrode thickness measurement of a Si(Li) detector for the SIXA array | physics.ins-det | Cathode electrodes of the Si(Li) detector elements of the SIXA X-ray
spectrometer array are formed by gold-palladium alloy contact layers. The
equivalent thickness of gold in one element was measured by observing the
characteristic L-shell X-rays of gold excited by monochromatised synchrotron
radiation with photon ener... | physics |
9,911 | An effective method to read out large scintillator areas with precise timing | physics.ins-det | Using scintillator tile technology several square meters of plastic
scintillator are read out by only two photomultiplier with a time precision of
about 1.5 nsec.
Two examples are discussed to build a detector based on this technology to
search for cosmic muons and neutrinos. | physics |
9,912 | A 10 MHz beam counter and a multiplicity detector for the E864 spectrometer | physics.ins-det | The E864 experiment at BNL requires a beam counter and multiplicity detector
system that can perform at an incident beam rate of 10^7 Au ions per second. We
have developed and tested a 150 micrometer thick quartz Cherenkov beam counter
and a scintillator based multiplicity-trigger counter during the first run of
this e... | physics |
9,913 | Thin gap parallel mesh chamber: a sparkless high-rate detector | physics.ins-det | In this work we describe a parallel geometry gaseous detector constituted by
a thin (0.6 mm) amplifying gap preceded by a drift region. The gap is delimited
by a metal plate and by a wire mesh. The detector can count up to a rate of
10^7 Hz/mm2 at gain 1000 and retains at lower counting rates the high gains
(close to 1... | physics |
9,914 | Energy calibration of the NaI(Tl) calorimeter of the SND detector using cosmic muons | physics.ins-det | The general purpose spherical nonmagnetic detector (SND) is now taking data
at VEPP-2M $e^+e^-$ collider in BINP (Novosibirsk) in the centre of mass energy
range of $0.2 \div 1.4$ GeV. The energy calibration of the NaI(Tl) calorimeter
of the SND detector with cosmic muons is described. Using this method, the
energy res... | physics |
9,915 | Energy calibration of the NaI(Tl) calorimeter of the SND detector using $e^+e^- \to e^+e^-$ events | physics.ins-det | Calibration of the three layer NaI(Tl) spherical calorimeter of the SND
detector using electron -- positron scattering events is described. Energy
resolution of $5 % (FWHM/2.36)$ for 500 MeV photons was achieved. | physics |
9,916 | Carbon Coated Gas Electron Multipliers | physics.ins-det | Gas electron multipliers (GEMs) have been overcoated with a high resistivity
10e14 - 10e15 Ohms / square amorphous carbon layer. The coating avoids charging
up of the holes and provides a constant gain immediately after switching on
independent of the rate. The gain uniformity across the GEM is improved.
Coating opens ... | physics |
9,917 | Optical vernier technique for in-situ measurement of the length of long Fabry-Perot cavities | physics.ins-det | We propose a method for in-situ measurement of the length of kilometer size
Fabry-Perot cavities in laser gravitational wave detectors. The method is based
on the vernier, which occurs naturally when the laser incident on the cavity
has a sideband. By changing the length of the cavity over several wavelengths
we obtain... | physics |
9,918 | New Developments in Hybrid Photon Detectors | physics.ins-det | New developments in HPD design are presented, triggered by applications in
high energy physics and astrophysics. The presented HPD designs are based on
three innovations. (i) In order to achieve the highest possible surface
coverage in a RICH detector, we introduced a photoelectron focussing method
which is efficient t... | physics |
9,919 | Sonoluminescence as Instrument for the Measurement of Time Parameters of Fast Photomultipliers | physics.ins-det | The apparatus description for control of the time parameters of
photomultipliers with high time resolution is described. For generation of
ultrashort light flashes have been used sonoluminescence effect -- emission of
the light flashes which is appearing at the stressed interior of collapsing air
microbubble by sound w... | physics |
9,920 | A handy method to monitor outputs from a pulsed light source and its application to photomultiplier's rate effect studies | physics.ins-det | In order to study photomultiplier's short-term gain stability at high
counting rate, we constructed an LED pulsed light source and its output monitor
system. For the monitor system, we employed a photon counting method using a
photomultiplier as a monitor photon detector. It is found that the method
offers a simple way... | physics |
9,921 | Solution to the ion feedback problem in Hybrid Photon Detectors and Photo Multiplier Tubes | physics.ins-det | A general solution to the positive ion feedback problem in Hybrid Photon
Detectors (HPD), photo multipliers (PM) and other similar detectors was found
in the insertion of a permanent electrostatic potential barrier which prevents
drift of positive ions from the anode, or the first dynode, towards the
photocathode. In t... | physics |
9,922 | Magnetic field profiling for selected-states magnetic-resonance spectroscopy (SSMRS) and Stern-Gerlach spectroscopy (MGRS) in condensed matter | physics.ins-det | A method was presented of profiling the magnetic field, with a zero vector of
magnetic flux density $B_{r}$ and strong gradient G, enabling conditions for
the Stern-Gerlach spectroscopy to be accomplished in condensed matter (the
method has been called magnetic field gradient spectroscopy - MGRS), as well
the previousl... | physics |
9,923 | Polarization of the Tagged Compton Backscattered Laser Photons. Results of Monte Carlo Simulation | physics.ins-det | Polarization characteristics of the gamma beam obtained by the Compton back
scattering of laser photons on high energy electrons are evaluated by
Monte-Carlo simulations.
It is assumed that outgoing photons are tagged; the energy dispersion of the
tagging photons and emittance of the initial electrons are taken into ... | physics |
9,924 | An Integrated Circuit for Signal Processing of the AMS RICH Photmultipliers Tubes | physics.ins-det | An analog integrated circuit has been designed, in a BiCMOS 0.8 micron
technology, for the feasability study of the signal processing of the AMS RICH
photomultiplier tubes. This low power, three channel gated integrator includes
its own gate and no external analog delay is requiered. It processes PMT pulses
over a dyna... | physics |
9,925 | Design and Operation of Front-End Electronics for the HERA-B Muon Detector | physics.ins-det | We have implemented a cost-effective design for the readout electronics of
both the anode wires and the cathode pads of large area proportional wire
chambers for the HERA-B muon system based on the ASD-08 integrated circuit. To
control and monitor the large number of readout channels, we have built a
distributed contro... | physics |
9,926 | Imaging Hybrid Photon Detectors with Minimized Dead Area and Protection Against Positive Ion Feedback | physics.ins-det | Imaging Hybrid Photon Detectors (HPD) have been developed for integration in
large area Cherenkov detectors for high energy physics and astrophysics. The
presented designs - developed particularly for the experiments MAGIC, LHCb and
AQUA-RICH - comprise very good imaging properties, protection against positive
ion feed... | physics |
9,927 | Taber Vibration Isolator for Vacuum and Cryogenic Applications | physics.ins-det | We present a procedure for the design and construction of a passive,
multipole, mechanical high-stop vibration isolator. The isolator, consisting of
a stack of metal disks connected by thin wires, attenuates frequencies in the
kilohertz range, and is suited to both vacuum and cryogenic environments. We
derive an approx... | physics |
9,928 | The Electronics of the H1 Lead/Scintillating-Fibre Calorimeters | physics.ins-det | The electronic system developed for the SpaCal lead/scintillating-fibre
calorimeters of the H1 detector in operation at the HERA ep collider is
described in detail and the performance achieved during H1 data-taking is
presented. The 10 MHz bunch crossing rate of HERA puts severe constraints on
the requirements of the e... | physics |
9,929 | A proposal for a new type of thin-film field-emission display by edge breakdown of MIS structure | physics.ins-det | A new type of field emission display(FED) based on an edge-enhance electron
emission from metal-insulator-semiconductor (MIS) thin film structure is
proposed. The electrons produced by an avalanche breakdown in the semiconductor
near the edge of a top metal electrode are initially injected to the thin film
of an insula... | physics |
9,930 | The Micro Slit Gas Detector | physics.ins-det | We describe the first tests with a new proportional gas detector. Its
geometry consists in slits opened in a copper metallized kapton foil with 30
micron anode strips suspended in these openings. In this way the multiplication
process is similar to a standard MSGC. The fundamental difference is the
absence of an insula... | physics |
9,931 | Getting Physics Data From the CMS ECAL Construction Database | physics.ins-det | CMS ECAL physicists must be able to extract physics characteristics from the
ECAL construction database for the calibration of sets of detector components.
Other applications, such as geometry for simulation and physics event
reconstruction, will also need to extract data from the construction database.
In each case, a... | physics |
9,932 | Review of Cosmic Ray experiments with underground detectors | physics.ins-det | The most important underground detectors addressing Cosmic Ray physics are
described, with a special emphasis on the description of the used technology. | physics |
9,933 | Monitoring the Stability of the ALEPH Vertex Detector | physics.ins-det | The ALEPH Silicon Vertex Detector features an optical fibre laser system to
monitor its mechanical stability. The operating principle and the general
performance of the laser system are described. The experience obtained during
1997 and 1998 operations confirms the important role that such a system can
have with respec... | physics |
9,934 | Extruded Plastic Scintillation Detectors | physics.ins-det | As a way to lower the cost of plastic scintillation detectors, commercially
available polystyrene pellets have been used in the production of scintillating
materials that can be extruded into different profiles. The selection of raw
materials is discussed. Two techniques to add wavelength shifting dopants to
polystyren... | physics |
9,935 | The X-ray CCD camera of the MAXI Experiment on the ISS/JEM | physics.ins-det | MAXI, Monitor of All-sky X-ray Image, is the X-ray observatory on the
Japanese experimental module (JEM) Exposed Facility (EF) on the International
Space Station (ISS). MAXI is a slit scanning camera which consists of two kinds
of X-ray detectors: one is a one-dimensional position-sensitive proportional
counter with a ... | physics |
9,936 | Physics of Particle Detection | physics.ins-det | In this review the basic interaction mechanisms of charged and neutral
particles are presented. The ionization energy loss of charged particles is
fundamental to most particle detectors and is therefore described in more
detail. The production of electromagnetic radiation in various spectral ranges
leads to the detecti... | physics |
9,937 | Quality control of GEM detectors using scintillation techniques | physics.ins-det | Non destructive quality control of microstructures at the manufacturing stage
is an important issue in the foreseen use of huge numbers of such gaseous
detectors in the future high luminosity colliders. In this work we report on
the use of the scintillation light emitted by the avalanches in GEM channels
for checking d... | physics |
9,938 | The solar neutrino project HELLAZ : status report on the hardware and the simulation | physics.ins-det | We report the status of the solar neutrino project called HELLAZ. In a high
pressure and cooled TPC filled with helium, the detection of each ionisation
electron of the track produced by the recoil electron from elastic scattering
induced by solar neutrinos, will yield the low energy, high resolution solar
neutrino spe... | physics |
9,939 | Design Patterns for Description-Driven Systems | physics.ins-det | In data modelling, product information has most often been handled separately
from process information. The integration of product and process models in a
unified data model could provide the means by which information could be shared
across an enterprise throughout the system lifecycle from design through to
productio... | physics |
9,940 | Rare-earth loaded liquid scintillator (for LENS experiment) | physics.ins-det | Rare-earth (Yb/Gd) complexes with neutral organophosphorus ligands are
briefly discussed for their application in liquid scintillation technique. To
evaluate the principle feasibility of a high rare-earth loaded scintillator,
the ytterbium chloride complexes with tri-isoamylphosphine oxides were
synthesized. Relative s... | physics |
9,941 | A measurement of the absolute neutron beam polarization produced by an optically-pumped 3He spin filter | physics.ins-det | The capability of performing accurate measurements of neutron beam
polarization opens a number of exciting opportunities in fundamental neutron
physics and in neutron scattering. At the LANSCE pulsed neutron source we have
measured the neutron beam polarization with absolute accuracy of 0.3% in the
neutron energy range... | physics |
9,942 | X-ray Measurement of the subpixel structure of the XMM EPIC MOS CCD | physics.ins-det | We report here the results of a mesh experiment to measure the subpixel
structure of the EPIC MOS CCDs on board the XMM X-ray observatory. The pixel
size is 40$\mu$m square while the mesh hole spacing is 48$\mu$m, a combination
quite different from our standard mesh experiment. We have verified that this
combination fu... | physics |
9,943 | A Compact 3H(p,gamma)4He 19.8-MeV Gamma-Ray Source for Energy Calibration at the Sudbury Neutrino Observatory | physics.ins-det | The Sudbury Neutrino Observatory (SNO) is a new 1000-tonne D2O Cerenkov solar
neutrino detector. A high energy gamma-ray source is needed to calibrate SNO
beyond the 8B solar neutrino endpoint of 15 MeV. This paper describes the
design and construction of a source that generates 19.8-MeV gamma rays using
the 3H(p,gamma... | physics |
9,944 | High Precision Ionization Chamber for Relative Intensity Monitoring of Synchrotron Radiation | physics.ins-det | A single channel, high precision ionization chamber has been built for
monitoring the relative intensity of X-rays in the energy range above 5 keV. It
can be used in experiments, such as EXAFS, where simultaneous high precision
monitoring of the relative intensity during the actual experiment is required.
In this paper... | physics |
9,945 | Test of CsI(Tl) crystals for the Dark Matter Search | physics.ins-det | Searches for weakly interacting massive particles(WIMP) can be based on the
dete ction of nuclear recoil energy in CsI(Tl) crystals. We demonstrate that
low energy gamma rays down to few keV is detected with CsI(Tl) crystal
detector. A clear peak at 6 keV is observed using X-ray source. Good energy
resolution and linea... | physics |
9,946 | A fast programmable trigger for isolated cluster counting in the BELLE experiment | physics.ins-det | We have developed a fast programmable trigger processor board based on a
field programmable gate array and a complex programmable logic device for use
in the BELLE experiment. The trigger board accommodates 144 ECL input signals,
2 NIM input signals, 24 ECL output signals, and the VME bus specification. An
asynchronous... | physics |
9,947 | The preliminary results of fast neutron flux measurements in the DULB laboratory at Baksan | physics.ins-det | One of the main sources of a background in underground physics experiments
(such as the investigation of solar neutrino flux, neutrino oscillations,
neutrinoless double beta decay, and the search for annual and daily Cold Dark
Matter particle flux modulation) are fast neutrons originating from the
surrounding rocks. Th... | physics |
9,948 | Measurement of Carbon Disulfide Anion Diffusion in a TPC | physics.ins-det | A Negative Ion Time Projection Chamber was used to measure the field
dependence of lateral and longitudinal diffusion for CS$_2$ anions drifting in
mixtures of CS$_2$ and Ar at 40 Torr. Ion drift velocities and limits on the
capture distance for electrons as a function of field and gas mixture are also
reported. | physics |
9,949 | Tumour Therapy with Particle Beams | physics.ins-det | Photons are exponentially attenuated in matter producing high doses close to
the surface. Therefore they are not well suited for the treatment of deep
seated tumours. Charged particles, in contrast, exhibit a sharp increase of
ionisation density close to the end of their range, the so-called Bragg-peak.
The depth of th... | physics |
9,950 | The rf control and detection system for PACO the parametric converter detector | physics.ins-det | In this technical note the rf control and detection system for a detector of
small harmonic displacements based on two coupled microwave cavities (PACO) is
presented. The basic idea underlying this detector is the principle of
parametric power conversion between two resonant modes of the system,
stimulated by the (smal... | physics |
9,951 | Efficiency of neutron detection of superheated drops of Freon-22 | physics.ins-det | Neutron detection efficiency of superheated drops of Freon22 for neutrons
obtained from a 3Ci Am-Be neutron source has been reported in this paper.
Neutron detection efficiency of both F-22 and F-12 have been determined from
the measured nucleation rate using the volumetric method developed in our lab.
The result shows... | physics |
9,952 | Study of nucleating efficiency of superheated droplets by neutrons | physics.ins-det | Superheated droplets are proven to be excelent detectors for neutrons and
could be used as a neutron dosimeter. To detect accurately the volume of the
vapour formed upon nucleation and hence to observe the nucleation
quantitatively an air displacement system has been developed. | physics |
9,953 | Photon sensitivity of superheated drop at room temperature | physics.ins-det | It has been reported so far that superheated drop detector made of R-12 at
room temperature are sensitive to neutrons yet insensitive to photons. This
property makes its use as one of the most useful neutron dosimeter. The photon
sensitivity of R12 at room temperature when exposed to 59.54kev photons
obtained from radi... | physics |
9,954 | Superheated drop neutron spectrometer | physics.ins-det | Superheated drops are known to detect neutrons through the nucleation caused
by the recoil nuclei produced by the interactions of neutrons with the atoms
constituting the superheated liquid molecule. A novel method of finding the
neutron energy from the temperature dependence response of SDD has been
developed. From th... | physics |
9,955 | Lorentz angle measurements in irradiated silicon detectors between 77 K and 300 K | physics.ins-det | Future experiments are using silicon detectors in a high radiation
environment and in high magnetic fields. The radiation tolerance of silicon
improves by cooling it to temperatures below 180 K. At low temperatures the
mobility increases, which leads to larger deflections of the charge carriers by
the Lorentz force. A ... | physics |
9,956 | The BaBar Calorimeter Light Pulser System | physics.ins-det | To make precision measurements with a CsI(Tl) calorimeter in a high
luminosity environment requires that the crystals are well calibrated and
continually monitored for radiation damage. This should not effect the total
integrated luminosity which is particularly important for the \babar
calorimeter to enable it to make... | physics |
9,957 | Two large-area anode-pad MICROMEGAS chambers as the basic elements of a pre-shower detector | physics.ins-det | The design of a detector based on MICROMEGAS (MICRO MEsh GAseous Structure)
technology is presented. Our detector is characterized by a large active area
of 398(\times)281 mm(^{2}), a pad read-out with 20(\times)22 mm(^{2})
segmentation, and an uniform amplification gap obtained by insulating spacers
(100 (\mu)m high a... | physics |
9,958 | Elliptical X-Ray Spot Measurement | physics.ins-det | The so-called roll bar measurement uses a heavy metal material, optically
thick to x-rays, to form a shadow of the x-ray origination spot. This spot is
where an energetic electron beam interacts with a high Z target. The material
(the "roll bar") is slightly curved to avoid alignment problems. The roll bar
is construct... | physics |
9,959 | Annealing of radiation induced defects in silicon in a simplified phenomenological model | physics.ins-det | The concentration of primary radiation induced defects has been previously
estimated considering both the explicit mechanisms of the primary interaction
between the incoming particle and the nuclei of the semiconductor lattice, and
the recoil energy partition between ionisation and displacements, in the frame
of the Li... | physics |
9,960 | Fast and Flexible CCD Driver System Using Fast DAC and FPGA | physics.ins-det | We have developed a completely new type of general-purpose CCD data
acquisition system which enables one to drive any type of CCD using any type of
clocking mode. A CCD driver system widely used before consisted of an analog
multiplexer (MPX), a digital-to-analog converter (DAC), and an operational
amplifier. A DAC is ... | physics |
9,961 | Direct measurement of sub-pixel structure of the EPIC MOS CCD on-board th e XMM/NEWTON satellite | physics.ins-det | We have used a mesh experiment in order to measure the sub-pixel structure of
the EPIC MOS CCDs on-board the XMM/NEWTON satellite. The EPIC MOS CCDs have 40
$\mu$m-square pixels which have an open electrode structure in order to improve
the detection efficiency for low-energy X-rays. We obtained restored pixel
images f... | physics |
9,962 | Measurements of Spatial Resolution of ATLAS Pixel Detectors | physics.ins-det | Standard as well as irradiated silicon pixel detectors developed for the
ATLAS experiment were tested in a beam. Digital and analog resolutions were
determined comparing the positions measured by a microstrip telescope and by
the pixel detector. Digital resolutions of 10 um and analog resolutions of 6 um
(before irradi... | physics |
9,963 | A measurement of Lorentz Angle of radiation-hard Pixel Sensors | physics.ins-det | Silicon pixel detectors developed to meet LHC requirements were tested in a
beam at CERN in the framework of the ATLAS collaboration. The experimental
behaviour of irradiated and not-irradiated sensors in a magnetic field is
discussed. The measurement of the Lorentz angle for these sensors at different
operating condit... | physics |
9,964 | Superconducting Nb-film LC resonator | physics.ins-det | Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been
fabricated and tested in the temperature range 0.05--1 K in magnetic fields up
to 30 mT. Their Q value increases towards decreasing temperature as sqrt(T) and
reaches 10^3 at 0.05 K. As a function of magnetic field Q is unstable and
displays ... | physics |
9,965 | A coupled microwave-cavity system in the Rydberg-atom cavity detector for dark matter axions | physics.ins-det | A coupled microwave-cavity system of cylindrical TM$_{010}$ single-mode has
been developed to search for dark matter axions around 10 $\mu {\rm eV}$(2.4
GHz) with the Rydberg-atom cavity detector at 10 mK range temperature. One
component of the coupled cavity (conversion cavity) made of oxygen-free
high-conductivity co... | physics |
9,966 | Subpixel Spatial Resolution of the X-Ray Charge-Coupled Device Based on the Charge Cloud Shape | physics.ins-det | When an X-ray photon lands into a pixel (event pixel), the primary charge is
mainly collected into the event pixel. If the X-ray landing position is
sufficiently close to the pixel boundary, the primary charge spills over to the
adjacent pixel forming split events. We can easily understand that there are
three paramete... | physics |
9,967 | Discovery of a Planar Waveguide for an X-Ray Radiation | physics.ins-det | A simple model of X-Ray standing waves (XSW) formation in the slit of a
planar waveguide of X-Ray radiation beam for the angle area restricted by the
critical total reflection angle is developed. It is shown that the model is
true for a case of the Bragg reflection. The conditions required for XSW to
appear in the spac... | physics |
9,968 | Properties of Pt Schottky Type Contacts On High-Resistivity CdZnTe Detectors | physics.ins-det | In this paper we present studies of the I-V characteristics of CdZnTe
detectors with Pt contacts fabricated from high-resistivity single crystals
grown by the high-pressure Brigman process. We have analyzed the experimental
I-V curves using a model that approximates the CZT detector as a system
consisting of a reversed... | physics |
9,969 | An insulating grid spacer for large-area MICROMEGAS chambers | physics.ins-det | We present an original design for large area gaseous detectors based on the
MICROMEGAS technology. This technology incorporates an insulating grid,
sandwiched between the micro-mesh and the anode-pad plane, which provides an
uniform 200 $\mu$m amplification gap. The uniformity of the amplification gap
thickness has bee... | physics |
9,970 | High-resolution TOF with RPCs | physics.ins-det | In this work we describe some recent results concerning the application of
Resistive Plate Chambers operated in avalanche mode at atmospheric pressure for
high-resolution time-of-flight measurements. A combination of multiple,
mechanically accurate, thin gas gaps and state-of-the-art electronics yielded
an overall (det... | physics |
9,971 | High pressure operation of the triple-GEM detector in pure Ne, Ar and Xe | physics.ins-det | We study the performance of the triple-GEM (Gas Electron Multiplier) detector
in pure noble gases Ne, Ar and Xe, at different pressures varying from 1 to 10
atm. In Ar and Xe, the maximum attainable gain of the detector abruptly drops
down for pressures exceeding 3 atm. In contrast, the maximum gain in Ne was
found to ... | physics |
9,972 | A Large Area Timing RPC | physics.ins-det | A large area Resistive Plate Chamber (RPC) with a total active surface of
160x10 cm2 was built and tested. The surface was segmented in two 5 cm wide
strips readout on both ends with custom, very high frequency, front end
electronics.
A timing resolution between 50 and 75 ps sigma with an efficiency for Minimum
Ioniz... | physics |
9,973 | The HERMES Dual-Radiator Ring Imaging Cerenkov Detector | physics.ins-det | The construction and use of a dual radiator Ring Imaging Cerenkov(RICH)
detector is described. This instrument was developed for the HERMES experiment
at DESY which emphasizes measurements of semi-inclusive deep-inelastic
scattering. It provides particle identification for pions, kaons, and protons
in the momentum rang... | physics |
9,974 | Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV | physics.ins-det | An accelerator experiment was performed using a low-energy antiproton beam to
measure antiproton detection efficiency of BESS, a balloon-borne spectrometer
with a superconducting solenoid. Measured efficiencies showed good agreement
with calculated ones derived from the BESS Monte Carlo simulation based on
GEANT/GHEISH... | physics |
9,975 | Decoupled Moderators - Do we always need them? or: A New Approach for Pulse Shaping | physics.ins-det | At a spallation neutron source, the wavelength of a neutron is generally
determined by its time-of-flight (TOF) from the source to the detector. The
achievable precision is ultimately limited by the non-zero emission time-width
of the source/moderator system. Particularly, coupled moderators that are used
to produce hi... | physics |
9,976 | A data capture and production management tool for the assembly and construction of the CMS detectors | physics.ins-det | The CMS experiment will comprise several very large high resolution detectors
for physics. Each detector may be constructed of well over a million parts and
will be produced and assembled during the next decade by specialised centres
distributed world-wide. Each constituent part of each detector must be
accurately meas... | physics |
9,977 | A Component Based Approach to Scientific Workflow Management | physics.ins-det | CRISTAL is a distributed scientific workflow system used in the manufacturing
and production phases of HEP experiment construction at CERN. The CRISTAL
project has studied the use of a description driven approach, using meta-
modelling techniques, to manage the evolving needs of a large physics
community. Interest from... | physics |
9,978 | Object Serialization and Deserialization Using XML | physics.ins-det | Interoperability of potentially heterogeneous databases has been an ongoing
research issue for a number of years in the database community. With the trend
towards globalization of data location and data access and the consequent
requirement for the coexistence of new data stores with legacy systems, the
cooperation and... | physics |
9,979 | The Reification of Patterns in the Design of Description-Driven Systems | physics.ins-det | To address the issues of reusability and evolvability in designing self-
describing systems, this paper proposes a pattern-based, object-oriented,
description-driven system architecture. The proposed architecture embodies four
pillars - first, the adoption of a multi-layered meta-modeling architecture and
reflective me... | physics |
9,980 | Performance of a large limited streamer tube cell in drift mode | physics.ins-det | The performance of a large (3x3 $cm^2$) streamer tube cell in drift mode is
shown. The detector space resolution has been studied using cosmic muons
crossing an high precision silicon telescope. The experimental results are
compared with a GARFIELD simulation. | physics |
9,981 | Fundamentals of Gas Micropattern Detectors | physics.ins-det | We performed a new series of systematic studies of gain and rate
characteristics of several micropattern gaseous detectors. Extending earlier
studies, these measurements were done at various pressures, gas mixtures, at a
wide range of primary charges and also when the whole area of the detectors was
irradiated with a h... | physics |
9,982 | Gain, Rate and Position Resolution Limits of Micropattern Gaseous Detectors | physics.ins-det | In this study we report the results of a systematic study of the gain, rate
and the position resolution limits of various micropattern gaseous detectors.
It was found that at low rates (<1 Hz/mm^2) each detector has it own gain
limit, which depends on the size and design features, as well as on gas
composition and pres... | physics |
9,983 | Detection of the primary scintillation light from dense Ar, Kr and Xe with novel photosensitive gaseous detectors | physics.ins-det | The detection of primary scintillation light in combination with the charge
or secondary scintillation signals is an efficient technique to determine the
events t=0 as well as particle / photon separation in large mass TPC detectors
filled with noble gases and/or condensed noble gases. The aim of this work is
to demons... | physics |
9,984 | Evaluation of various planar gaseous detectors with CsI photocathodes for the detection of primary scintillation light from noble gases | physics.ins-det | Noble gases and liquids are excellent scintillators and this opens a unique
opportunity to directly detect the primary scintillation light produced in
these media by photons or particles. This signal can be used for several
purposes, for example as a start signal for TPCs or for particles
identification. Usually photom... | physics |
9,985 | Sub-nanosecond, time-resolved, broadband infrared spectroscopy using synchrotron radiation | physics.ins-det | A facility for sub-nanosecond time-resolved (pump-probe) infrared
spectroscopy has been developed at the National Synchrotron Light Source of
Brookhaven National Laboratory. A mode-locked Ti:sapphire laser produces 2 ps
duration, tunable near-IR pump pulses synchronized to probe pulses from a
synchrotron storage ring. ... | physics |
9,986 | An All-Cryogenic THz Transmission Spectrometer | physics.ins-det | This paper describes a THz transmission spectrometer for the spectral range
of 2-65 cm^-1 (100 GHz to 2 THz) with a spectral resolution of at least 1.8
cm^-1 (50 GHz) where the source, sample, and detector are all fully contained
in a cryogenic environment. Cyclotron emission from a two-dimensional electron
gas heated ... | physics |
9,987 | Performance of the triple-GEM detector with optimized 2-D readout in high intensity hadron beam | physics.ins-det | Multiple-GEM detectors are considered to be good candidates for tracking
devices in experiments with high hadronic background. We present the results of
the triple-GEM detectors beam test in a high intensity pion beam. The detectors
had an optimized two-dimensional readout with minimized strip capacitance. Such
optimiz... | physics |
9,988 | Development of a Detector Control System for the ATLAS Pixel Detector | physics.ins-det | The innermost part of the ATLAS experiment will be a pixel detector
containing around 1750 individual detector modules. A detector control system
(DCS) is required to handle thousands of I/O channels with varying
characteristics. The main building blocks of the pixel DCS are the cooling
system, the power supplies and t... | physics |
9,989 | Upgrade of the Photon Beamline Control System on the SRS | physics.ins-det | The SRS is a 2GeV synchrotron light source with 14 beamlines serving
approximately 34 experimental stations. Control of the major elements of the
beamlines (vacuum pumps, gauges, valves and radiation stops) is the
responsibility of the main SRS Control System. As part of the long-term upgrade
plan for the SRS Control S... | physics |
9,990 | Distributed Power Supply Control and Monitoring System | physics.ins-det | An extensible power supply control and monitoring system has been developed
at Fermilab's Technical Division as a result of requirements to control and
monior power supplies of various types from within many different applications.
This system, deployed as a network service, provides uniform programming and
user interf... | physics |
9,991 | Front End CAMAC Controller for SLAC Control System | physics.ins-det | Most of the devices in the SLAC control system are accessed via interface
modules in ~450 CAMAC crates. Low-cost controllers in these crates communicate
via a SLAC-proprietary bit-serial protocol with 77 satellite control computers
("micros") within the accelerator complex. A proposed upgrade replaces the
existing Mult... | physics |
9,992 | Reimplementing the EPICS Static Database Access Library | physics.ins-det | The Static Database Access library was first introduced in EPICS
(Experimental Physics and Industrial Control System) Release 3.11 in 1994. It
provides an application program interface (API) for database configuration
tools written in C to manipulate database record definitions and is used for
various tasks within the ... | physics |
9,993 | EPICS: A Retrospective on Porting iocCore to Multiple Operating Systems | physics.ins-det | An important component of EPICS (Experimental Physics and Industrial Control
System) is iocCore, which is the core software in the IOC (input/output
controller) front-end processors. At ICALEPCS 1999 a paper was presented
describing plans to port iocCore to multiple operating systems. At that time
iocCore only supporte... | physics |
9,994 | The Advanced Photon Source Injector Test Stand Control System | physics.ins-det | The Advanced Photon Source (APS) primary and backup injectors consist of two
thermionic-cathode rf guns. These guns are being upgraded to provide improved
performance, to improve ease of maintenance, and to reduce downtime required
for repair or replacement of a failed injector. As part of the process, an
injector test... | physics |
9,995 | Integrating Externally Developed Systems For SNS Linac Cooling And Vacuum | physics.ins-det | External contractors are developing the local cooling and vacuum control
systems for the Spallation Neutron Source (SNS) linac. Soon these systems will
be integrated into the facility-wide controls system. Allen-Bradley Logix5000
series programmable controllers, populated with appropriate input/output
modules, were sel... | physics |
9,996 | The NIF Integrated Timing System - Design and Performance | physics.ins-det | The National Ignition Facility (NIF) will contain the world's most powerful
laser. NIF requires more than 1500 precisely timed trigger pulses to control
the timing of laser and diagnostic equipment. The Integrated Timing System
applies new concepts to generate and deliver triggers at preprogrammed times to
equipment th... | physics |
9,997 | Readout and Control of a Power-recycled Interferometric Gravitational-wave Antenna | physics.ins-det | Interferometric gravitational wave antennas are based on Michelson
interferometers whose sensitivity to small differential length changes has been
enhanced by adding multiple coupled optical resonators. The use of optical
cavities is essential for reaching the required sensitivity, but sets
challenges for the control s... | physics |
9,998 | Beam Diagnostics Systems For The National Ignition Facility | physics.ins-det | The National Ignition Facility laser focuses 1.8 Mega-joules of ultraviolet
light (wavelength 351 nano-meters) from 192 beams into a
600-micro-meter-diameter volume. Effective use of this output in target
experiments requires that the power output from all the beams match within 8%
over their entire 20-nanosecond wavef... | physics |
9,999 | Implementation of JFPC (Java for Process Control) under Linux - a mechanism to access industrial I/Os in a JAVA/Linux environment | physics.ins-det | Using JAVA for process control requires the access to I/O-Hardware. This
problem is addressed in several ongoing standardisation efforts for Real Time
Java. A spin-off of these standardisation efforts is the Siemens product JFPC
(Java for Process Control), which is based on the ideas of OPC (OLE for Process
Control). I... | physics |
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