Prof.
Muir Russell KCB, DL, FRSE
(The University of Glasgow)
01/09/2008, 10:20
Chris Parkes
(Department of Physics and Astronomy)
01/09/2008, 10:35
At 17:30 on Friday 22nd August LHCb reconstructed in its Vertex
Locator (VELO) the first particles from interactions of the LHC beam. The
observation was made during an LHC synchronization test. This test
collided the proton beam with an absorber 200m from LHCb. The resulting
particles from the very first event were reconstructed in the LHCb VELO.
Prof.
Harry van der Graaf
01/09/2008, 10:50
100 years ago, in Manchester, Hans Geiger operated the first gaseous
detector, which was the basis for 'wire chambers', widely applied as
track imaging in particle physics experiments.
In wire chambers gas amplification occurs, close to the wire surface,
due to he strong (1/R) electric field. This enables the detection of the
few single electrons created in the gas by ionisation...
Atsuhiko Ochi
(Department of Physics)
01/09/2008, 11:30
A novel MPGD "Micro-Mesh Micro-Pixel Chamber (M^3-PIC) has been developed for particle imaging and/or TPC readout. The M^3-PIC consists of a Micropixel chamber (u-PIC) and a thin micro mesh film. A point-like electric field is formed around the anode electrode which provides a higher gas gain and more stable operation than existing MPGDs. In addition, ion back flow (IBF) into the detection...
Dr
Dominic Duxbury
(RAL, STFC)
01/09/2008, 11:50
The HOTWAXS detector has been available for use by the scientific community at the Daresbury SRS for the last 18 months on stations 9.3 and 2.1. A second system has also recently been commissioned on station I22 of the Diamond light source and is in routine use. The detector is based on Microstrip Gas Chamber (MSGC) technology and offers high counting rate, parallax free, photon counting...
Vladimir Peskov
(Pole Universitaire Leonardo de Vinci)
01/09/2008, 12:10
We have developed a new generation of GEM-like detectors with double layered electrodes instead of commonly used metallic ones: with an inner layer consisting of thin metallic strips and an outer layer made of resistive grid manufactured by a screen printing technology. By measuring signals induced by avalanches on the inner strips one can obtain 2-D information about the position of the...
Dr
Christopher Saunter
(University of Durham)
01/09/2008, 14:30
Applications in Astronomy and Astrophysics
Oral Contribution
Adaptive Optics systems measure and correct dynamic optical distortions,
often atmospheric turbulence, to improve overall system performance. Such
systems have grown from their astronomical inception in 1953 to cover many
fields including ophthalmology, high power lasers, communication, optical
storage and astronomy.
There are many different systems but common to all is the need to...
Dr
Ives Derek
01/09/2008, 14:50
Applications in Astronomy and Astrophysics
Oral Contribution
Electron multiplication CCDs have been commercially available for the last few years but have yet to make wide impact in the astronomical community. They have specifically been designed to use an avalanche gain process during the serial charge transfer to give sub-electron read out noise. In all other respects they are identical to the very latest generation of CCDs. They have been used with...
Dr
Adam Woodcraft
01/09/2008, 15:10
Applications in Astronomy and Astrophysics
Oral Contribution
Sub-mm astronomy has seen an explosive growth in recent years. This has been driven by improvements in detector technology, and in particular the move from single pixel instruments to ones containing arrays of hundreds and even thousands of pixels. Sub-mm detectors are different from those used in astronomy at most other wavelengths in that they are not produced commercially. Instead,...
Lawrence Jones
(STFC Rutherford Appleton Laboratory)
01/09/2008, 15:30
Applications in Astronomy and Astrophysics
Oral Contribution
HEXITEC is a collaborative project with the aim of developing a new range of detectors for high energy X-ray imaging. High energy X-ray imaging has major advantages over current lower energy imaging for the life and physical sciences including improved phase contrast images on larger, higher density samples and with lower accumulated doses. However, at these energies conventional silicon based...
Prof.
Jürgen Knödlseder
01/09/2008, 16:20
Detectors for Astrophysics and Astro-Particle Physics
Keynote talk
Position Sensitive Detectors play a key role in X-ray and Gamma-ray Astronomy
as they allow imaging and spectroscopy of astrophysical sources throughout
the Universe. At these high energies, photons are generally characterized
individually, requiring sensitive and rapid low-noise charge amplifiers to extract
the information. In this review I will describe the detector technologies that...
Prof.
Herman Wellenstein
01/09/2008, 17:00
Detectors for Astrophysics and Astro-Particle Physics
Oral Contribution
We developed a TPC with optical readout with the goal of detecting the sense and direction of the elastic recoils generated by Dark Matter interactions. The detector, filled with CF4 gas at low pressure, is equipped with a mesh-based amplification region that allows for a 2D imaging of the recoils in a CCD camera. The third coordinate of the recoil is provided by PMTs. The sense of the...
Henrique Araujo
(Unknown)
01/09/2008, 17:20
Detectors for Astrophysics and Astro-Particle Physics
Oral Contribution
ZEPLIN-III is a position-sensitive liquid xenon time projection chamber which is currently collecting data in a deep underground laboratory at Boulby in North Yorkshire, UK. It's science goal is the direct detection of Galactic dark matter particles and it is specifically designed to be sensitive to neutralinos predicted by supersymmetry. We will present results on instrument performance...
Prof.
Andrew Holland
01/09/2008, 17:40
Detectors for Astrophysics and Astro-Particle Physics
Oral Contribution
Prof.
Carlo Fiorini
(Politecnico di Milano and INFN Italy)
01/09/2008, 18:00
Detectors for Astrophysics and Astro-Particle Physics
Oral Contribution
In this work, we present the results of the experimental characterization of the DRAGO gamma camera, developed within an Italian INFN project. This camera, based on the Anger camera topology, is based on a monolithic array of 77 Silicon Drift Detectors (SDDs), with an active area of 6.7 cm2, coupled to a single CsI(Tl) scintillator crystal, 5mm thick. The use of an array of SDDs allows to...
Jacques Ball
(DAPNIA)
02/09/2008, 09:40
Micromegas detectors on bulk are used in a new design of the central tracker for the future CLAS12 spectrometer in Hall B at Jefferson Lab. Performances, mechanical designs and behaviour in magnetic field are shown.
Prof.
Alex Elliott
02/09/2008, 11:50
Applications in Nuclear Medicine and Radiology
Keynote talk
The use of imaging techniques in medicine continues to expand. Over the last decade, there has been a 30% increase in the number of investigations, with CT scans rising by almost three fold. The use of x-ray film has given way to the digital detector and companies strive for continuous improvement in both resolution and sensitivity. The latter is particularly important in terms of reducing...
Prof.
Vicente Herrero-Bosch
02/09/2008, 12:30
Applications in Nuclear Medicine and Radiology
Oral Contribution
PESIC is an integrated front-end for multianode photomultiplier based nuclear imaging devices. Its architecture has been designed to improve time behavior and increase spatial resolution. Its preamplying stage introduces two main benefits: digitally programmable gain adjustment for every photomultiplier output, and isolation from other front-end electronics by means of current buffers. This...
Dr
Martinez-Davalos
02/09/2008, 13:50
Applications in Nuclear Medicine and Radiology
Oral Contribution
A computed microtomography system (microCT) based on a CMOS flat panel detector (FPD) has been recently developed at Instituto de Fisica, UNAM, and is currently being characterised. The initial tests include the measurement of X-ray spectra using a CdTe detector, and the determination of the image transfer characteristics of the flat panel detector, such as linearity of response, MTF, noise...
Mr
Andrea Mattera
02/09/2008, 14:10
Applications in Nuclear Medicine and Radiology
Oral Contribution
Boron Neutron Capture Therapy (BNCT) is a radiotherapic technique exploiting the alpha particles produced after the irradiation of the isotope 10 of boron with thermal neutrons in the capture reaction ^{10}B(n,alpha)^{7}Li. It is used to treat tumours that for their features (radioresistance, extension, localization near vital organs) cannot be treated through conventional photon-beams...
Prof.
Robert Ott
(Institute of Cancer Research)
02/09/2008, 14:30
Applications in Nuclear Medicine and Radiology
Oral Contribution
Three different Active Pixel Sensors provided through the MI-3 collaboration have been tested to assess their application to Nuclear Medicine Imaging. When coupled to a phosphor such as CsI(Tl) these sensors have the potential for high resolution imaging of radiotracers such as Tc-99m. The work carried out so far shows that the noise levels in the APS sensors needs to be as low as possible so...
John Osmond
02/09/2008, 14:50
Applications in Nuclear Medicine and Radiology
Oral Contribution
The intelligence, read-out speed, radiation hardness and large size of CMOS active pixel sensors (APS) gives them a potential advantage over current radiotherapy verification systems. This work investigates the feasibility of using an APS to image the megavoltage treatment beam produced by a linear accelerator, and demonstrates the logic which may be used to evaluate treatment and track motion....
Mr
Nestor Ferrando
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
Indirect position detectors based on scintillator crystals don't have a spacial uniformity in their response. This happens due to crystal irregularities and gain differences between the photomultiplier anodes. In order to solve this, PESIC, an integrated front-end for multianode photomultiplier based nuclear imaging devices was created. One of its main features is the digitally programmable...
Mr
Hugo Natal da Luz
02/09/2008, 15:10
Gas Pixel Detectors
Poster
The Micro Hole & Strip Plate (MHSP) operating in a CF4 atmosphere aiming neutron imaging will be presented. Recent results of the MHSP operation in pure xenon have shown position resolutions of around 300 μm and gas gains well above 10^4 for tetrafluoromethane (CF4) at atmospheric pressure. CF4 combined with 3He is generally known as an efficient gas for proton and tritium stopping, produced...
Dr
Antonio Ranieri
(INFN Bari)
02/09/2008, 15:10
Novel Gas-based Detection Techniques
Poster
A mixed analog-digital ASIC prototype named GASTONE (GEM Amplifier Shaper Tracking ON Events) designed in the CMOS AMS 0.35um technology has been developed to specifically readout the cylindrical GEM inner tracking detector built as improvement of the KLOE apparatus at the e+e- DAFNE collider. The analog part of the ASIC is characterized by a very low power dissipation of 1.32 mW/channel for...
Dr
Goran Panjkovic
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
The hybrid charge amplifiers have been around for some time and it seems they are approaching their technological maturity, but not the extinction yet. In this paper the design methodology is formalized and key design constraints are defined and discussed. Further, considering that components used in such preamplifiers are also reaching their technological maturity, it is possible to predict...
Laurence Carson
(Unknown)
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
Pion/kaon discrimination in the LHCb experiment will be provided by two Ring Imaging Cherenkov (RICH) counters. These use arrays of 484 Hybrid Photon Detectors (HPDs) to detect the Cherenkov photons emitted by charged particles traversing the RICH. The HPD consists of a vacuum tube with a multi-alkali S20 photocathode deposited on the inside surface of a quartz entrance window, with the...
Dr
James Milnes
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
The Image-Charge technique used with image tubes provides several operational and practical benefits by serving to isolate the electronic image readout from the detector. The simple dielectric interface between detector and readout provides vacuum isolation and no vacuum electrical feed-throughs are required. Since the readout is mechanically separate from the detector, an image tube of...
Mr
Craig Brown
02/09/2008, 15:10
Applications in Space Science
Poster
Improving the quantum efficiency (QE) and spectral resolution of X-ray sensitive charge-coupled devices (CCDs) for astronomy and planetary science applications is the primary focus of this work. These improvements are aimed at broadening the energy response of the detectors from 0.2 keV to >15 keV). Extending a the high energy response of a MOS (metal-oxide semiconductor) CCD can be achieved...
Mr
Xavier Francois Navick
02/09/2008, 15:10
Detectors for Astrophysics and Astro-Particle Physics
Poster
For events produced by betas, X and gammas rays underneath the surface of ionization and heat detectors, the collection of free charge carriers is poor. This is a strong limiting factor for Dark Matter research as WIMPs. For such events, electron recoils can indeed mimic nuclear recoils which generated by WIMPs. The solution is to localize of the interaction. This is the reason position...
Dr
Andrew Blue
(University of Glasgow)
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
This work will report on the first work on the characterisation of a backthinned Vanilla - a 512x512 (25um squared) active pixel sensor. For some time, it has been predicted that the removal of the supporting substrate section of the sensor to allow detection via direct backside illumination would result in many potential benefits to applications in fields such as particle physics (lower mass)...
Mr
Yury Prokazov
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
We describe position and time sensitive photon counting microchannel plate detector with improved quadrant anode readout system. The technique relies on a combination of the four planar elements pattern and an additional fifth electrode. The charge cloud induced by the event is split between the electrodes. The measured charge values uniquely define the position of the initial event. Quadrant...
Dr
Bo Kyung Cha
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
We have manufactured thallium doped cesium iodide (CsI:Tl) scintillator thin films by the thermal deposition method. The scintillation characteristics of the CsI:Tl thin films was studied by the X-ray induced luminescence and photoluminescence(PL) for different Tl doping concentrations between 0.1~10.0mol%. The wavelength of the main emission peak was about 550nm for both studies, but the...
Dr
Alexadner Klyachko
02/09/2008, 15:10
Novel Gas-based Detection Techniques
Poster
The development and testing of a large area high count rate position-sensitive neutron detector based on Gas Electron Multiplier (GEM) is reported. With the use of 3He:CF4 gas mixture at atmospheric pressure, the detector is anticipated to have ~50% efficiency for cold neutrons, 5-10 mm spatial resolution, and to handle up to 10^6 cm-2s-1 count rates, sufficient for intended applications with...
Mr
David Hall
02/09/2008, 15:10
Novel Photon Detection Systems
Poster
The technology behind the Electron-Multiplying Charge Coupled Device (EMCCD) was successfully exploited by e2v technologies in the late 1990s. Since then, many uses have been found for these low light level (L3) devices including surveillance and many scientific applications. The EMCCD increases or "multiplies" the charge signal by the phenomenon of impact ionisation (or avalanche...
Mr
Neil Murray
02/09/2008, 15:10
Applications in Space Science
Poster
The CCD247 is the 2nd generation of high resistivity device to be manufactured in e2v technologies plc development programme. Intended for infrared astronomy, the latest devices are fabricated on high resistivity (~8 kΩcm) bulk silicon, allowing for a greater device thickness whilst maintaining full depletion when ‘thinned’ to a thickness of 150 μm. In the case of the front illuminated...
Alan Litke
(Santa Cruz Institute for Particle Physics (SCIPP))
02/09/2008, 16:10
The back of the eye is lined by an extraordinary biological position
sensitive detector, the retina. This living neural network is able to
extract vital information about the external visual world, and transmit this
information in a timely manner to the brain. In this talk, after a brief
introduction to retinal architecture, I will describe how we measure the
functional properties of the...
Jerome Baudot
(Institut de Recherches Subatomiques (IReS))
02/09/2008, 16:50
CMOS sensors are developed for high energy physics. They offer a unique optimization with respect to granularity, thickness, readout speed, radiation tolerance and power consumption. We focus here on photon imaging.
After a presentation of the general achievements of the MIMOSA sensors, we discuss the sensor ability to detect X rays of a few keV. We then turn to the back-thinned version of...
Dr
Deborah Gunning
(The University of Glasgow)
02/09/2008, 17:30
Position-sensitive biological neural networks, such as the brain and retina, require position-sensitive detection methods to identify, map and study their behaviour. Traditionally, planar microelectrodes have been employed to record the cells electrical activity, with device limitations arising from the electrodes 2-D nature. Described here is the development and characterisation of an array...
Prof.
Roger Eccleston
03/09/2008, 09:00
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Keynote talk
The development of new synchrotron light and neutron sources and the concomitant
increase in experimental complexity places challenging demands on detector
technologies. For any given instrument, combinations of one or more of; high count rate,
high spatial resolution, high temporal resolution and wide bandwidth are required. A
survey of some of the technologies currently being developed...
Dr
Julien Marchal
03/09/2008, 09:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
A wide range of area and linear detectors have been commissioned on the synchrotron X-ray beamlines operating at the Diamond Light Source in UK. In addition to mature technologies such as Image-Plates, CCD/scintillator detectors, Multi-Wire and Micro-Strip Gas detectors, more recent detectors based on semiconductor pixel/strip sensors coupled to CMOS read-out chips are also in use for routine...
Prof.
Conny Hansson
03/09/2008, 10:00
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
A prototype X-ray imaging system, using the principle of tomographic energy dispersive diffraction imaging (TEDDI) has been developed at the University of Manchester's School of Materials. The non-destructive 3D imaging system makes use of a state of the art collimator array and a pixelated Si energy resolving detector. A proof of concept for the system has successfully been carried out using...
Dr
Giulio Pellegrini
(Centro Nacional de Microelectronica CNM-IMB-CSIC)
03/09/2008, 10:20
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
A novel ultra thin silicon detector called U3DTHIN has been designed and built for applications that range from neutral particle analyzers (NPA) used in Corpuscular Diagnostics of High Temperature Plasma to very low X-Ray spectroscopy. The main purpose of this detector is to provide a state-of-the-art solution for the upgrade of the current detector system of the NPAs at JET and also to pave...
Mr
Walter McNeil
03/09/2008, 11:10
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
Performance of a 4 cm long 32 pixel perforated diode neutron detector array is compared to an identical array of thin-film coated diodes. The perforated neutron detector design has been adapted to a 1-D pixel array capable of 120 micrometer spatial resolution and counting efficiency greater than 15%. Deep vertical trenches filled with ^6LiF provide outstanding improvement in efficiency over...
Dr
Dave Langstaff
(University of Wales, Aberystwyth)
03/09/2008, 11:30
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
We report on progress made on the Aberystwyth University Electron Counting Detector array since the last PSD conference. A new detector with 1,536 pixels across an active area of 38mm x 5mm is presented. Also presented are applications of the existing detector in photoelectron spectroscopy, showing how the improvement in detection technology enables fresh insights into the fabrication of...
Dr
Christopher Hall
03/09/2008, 11:50
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Oral Contribution
This paper presents the results of a trade study which looks at current and future requirements for detectors in coherent x-ray diffractive imaging. Several technologies are assessed against criteria, and observations about the challenges to soft x-ray detector science are discussed.
Jan Olzem
(I. Physikalisches Institut (B))
03/09/2008, 15:10
The all-silicon design of the CMS Tracker poses new challenges in aligning the system with more than 15000 independent modules. For optimal track-parameter resolution, the position and orientation of its modules need to be determined with a precision of better than few dozens of micrometers. Starting with the survey measurements and corrections provided by the hardware alignment system, we can...
Prof.
Bhattacharya Sudeb
(Saha Institute of Nuclear Physics, Kolkata, India)
03/09/2008, 15:10
In this paper we would like to present a comparative study of the Resistive Plate Chambers (RPC) made of different grades of Bakelite paper laminates, produced and commercially available in India. The chambers, operated in the streamer mode using argon, tetrafluroethane and isobutene in 34:59:7 mixing ratio, are tested for the efficiency and stability with cosmic rays. A particular grade of...
Teppo Maenpaa
(Helsinki Institute of Physics)
03/09/2008, 15:10
We present a cosmic rack, the FinnCRack. This device is a silicon strip detector based telescope that measures tracks of cosmic particles. FinnCRack is constructed using components of the Tracker Outer Barrel (TOB) of the CMS experiment at the CERN LHC. The FinnCRack provides temperature and humidity control. The data is analyzed using the official CMS analysis software package, CMSSW. The...
Andrea Zoboli
(Universita degli Studi di Trento)
03/09/2008, 15:10
Double-sided Double-Type Column 3D detectors (3D-DDTC) have been fabricated at Fondazione Bruno Kessler (former IRST). These sensors have columnar electrodes etched perpendicularly to the wafer surface from both sides and not fully penetrating into the substrate, so that the fabrication process is simpler than for standard 3D detectors. Compared to the previously developed 3D...
Sergei Movchan
(Joint Institute for Nuclear Research (JINR))
03/09/2008, 15:10
The P326 proposal of a new experiment NA62 aiming to perform precise measurement of the very rare kaon decay $K^+ \to \pi^+ \nu \bar{\nu}$ branching ratio at CERN is described. About 80 $K^+ \to \pi^+ \nu \bar{\nu}$ events with 10% of background is planned to obtain in two years of data taking. To reconstruct charged pion tracks with high efficiency and high resolution a single magnet...
Themis Bowcock
(Department of Physics)
03/09/2008, 15:10
New results on the performance of n+n and n+p LHCb VELO sensors are presented. Special attention is given to the study of systematic biases in reconstructed cluster positions due to irradition, and their potential impact on LHC physics.
Fabian Georg Huegging
(Unknown)
03/09/2008, 15:10
Hybrid pixel detectors which will be operated in experiments after the luminosity upgrade of LHC, have to survive very high radiation doses up to $10^{16}~$1~MeV n$_{eq}$ per cm$^2$. Therefore, new sensor concepts exceeding the radiation tolerance of the currently used DOFZ planar n-in-n silicon sensors are under investigation. Among them are 3D active edge silicon detectors, single crystal or...
Vasilii Kushpil
(Academy of Sciences of the Czech Republic (ASCR))
03/09/2008, 15:10
This paper will describe a new electronic module for conversion of parallel data flow to serial stream in USB2 full handshake mode (named in this paper as converter). The converter is used for investigation of active pixel sensors in NPI of ASCR and in LBL APS group. Readout DAQ software can be run on Win XP OS and Linux OS using this converter. GUI example for DAQ was prepared in Lab Windows...
Ioana Maria Anghel
(University of Illinois at Chicago)
03/09/2008, 15:10
With a total area of more than 200 square meters, about 15000 silicon modules, and nearly 10 million readout channels, the CMS Silicon Strip Tracker is by far the largest silicon strip detector ever built. Together with the pixel detector, it measures the momentum of charged particles, and plays a major role in lepton identification and heavy quark tagging. The detector has been integrated and...
Mr
Philipp Roloff
(Deutsches Elektronen-Synchrotron (DESY))
03/09/2008, 15:10
A high resolution (sigma<3um) beam telescope based on monolithic active pixel sensors is being developed within the EUDET collaboration. EUDET is a coordinated detector R&D programme for a future international linear collider providing test beam infrastructure to detector R&D groups. The telescope consists of six sensor planes with a pixel pitch of 30um and can be operated inside a solenoidal...
Andrew Pickford
(University of Glasgow)
03/09/2008, 15:10
The LHCb experiment is an experiment that will search for new physics in CP violation from heavy flavour decays at the LHC at CERN. Particle identification (pion, kaon and proton discrimination), a crucial requirement of the physics goals of the experiment, will be provided by two Ring Imaging CHerenkov (RICH) detectors. The upstream RICH1 detector incorporates two radiators, aerogel and C4F10...
Pascal Dupieux
(Laboratoire de Physique Corpusculaire (LPC))
03/09/2008, 15:10
The forward muon spectrometer of the ALICE experiment aims at investigating the properties of strongly interacting matter at the extreme energy density reached in heavy ion collisions at LHC. The trigger system of the spectrometer consists of four planes of RPC (Resistive Plate Chamber) detectors operated in streamer mode, 21k front-end channels and fast-decision electronics, covering an area...
Dr
Eugenio Nappi
(INFN Sezione di Bari)
03/09/2008, 16:50
The impressive development of novel photodetectors for Cherenkov imaging devices has allowed to achieve the very demanding hadron identification performance required to study CP violation in B meson decays and to assure a successful operation in the very harsh environment produced by colliding lead nuclei head-on at the unprecedented energies of the LHC collider. However, the design of the...
Peter Hobson
(Detector Development Group)
03/09/2008, 17:10
The Electromagnetic Calorimeter for the Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Collider (LHC) has lead tungstate crystals as the active medium. The photodetectors used to detect the scintillation light must be fast, sensitive, radiation-hard, and operate with significant internal gain in a 4T magnetic field for many years. CMS developed two different technologies to...
Dr
Jon Lapington
(University of Leicester)
03/09/2008, 17:50
High throughput photon counting with high time resolution is a niche application area where vacuum tube technologies can still outperform solid state devices. Applications in the life sciences will benefit greatly from performance enhancements both in event timing accuracy and detector throughput. The goal of the HiContent project is to develop a detector system specifically designed for...
Themis Bowcock
(University of Liverpool)
04/09/2008, 09:00
We summarize the state of position sensitive detectors for particle physics. Particular attention is given to the technologies for the next generation of detector replacements and upgrades for the LHC. The latest developments in radiation hard devices are reported together with recent results on novel devices. A brief review of possible applications of these new technologies to future...
Jovan Mitrevski
(Santa Cruz Inst. for Particle Phys. (SCIPP) - Univ. of Californi)
04/09/2008, 09:40
The ATLAS SemiConductor Tracker (SCT) has been installed, and fully connected to electrical, optical and cooling services. Commissioning has been performed both with calibration data and cosmic ray events. The cosmics were used to align the detector, measure the hit efficiency and set the timing. The SCT is now ready to take data when the LHC turns on this autumn. At the same time, it is clear...
Alexander Dierlamm
(University of Karlsruhe)
04/09/2008, 10:00
The LHC accelerator complex will undergo a program of consolidation and upgrade of various components, with goal of exceeding a peak luminosity of 1034 (original design figure) around the year 2013, to eventually reach values close to 1035. Such luminosity upgrade poses new challenges to the detector operation, both in terms of instantaneous and integrated rates. In CMS the system that have...
Phil Allport
(U. of Liverpool)
04/09/2008, 10:20
Planar, segmented silicon sensors are used for the tracker and vertex detectors for high energy physics experiments at the Large Hadron Collider (LHC) because of their unsurpassed performance in terms of granularity, resolution and speed while offering relatively low mass. The planned luminosity upgrade of the Large Hadron Collider at CERN (Super-LHC, sLHC) will provide a challenging...
Dr
Panja-Riina Luukka
(Helsinki Institute of Physics HIP)
04/09/2008, 11:10
Pad and strip detectors processed on high resistivity n-type magnetic Czochralski silicon were irradiated to several different fluences with protons. The pad detectors were characterized with Transient Current Technique (TCT) and the full-size strip detectors with a reference beam telescope and 225 GeV muon beam. The TCT measurements indicate a double junction structure and space charge sign...
Ulrich Parzefall
(Fakultaet fuer Physik)
04/09/2008, 11:30
The luminosity upgrade of the LHC to the SLHC will mean a massive increase in radiation levels for the tracking detectors close to the interaction point. The development of ultra-radiation hard silicon detectors is required for the innermost tracking layers. One option for radiation-hard silicon sensors is the 3D technology, where columnar electrodes are etched deep into the silicon bulk. This...
Harris Kagan
(Ohio State University)
04/09/2008, 11:50
With the commissioning of the LHC expected in 2008, and the LHC upgrades expected in 2012, ATLAS and CMS are planning for detector upgrades which require radiation hard technologies. Chemical Vapor Deposition (CVD) diamond has been used extensively in beam conditions monitors as the innermost detectors in the highest radiation areas of BaBar, Belle and CDF and is now planned for all LHC...
Dr
Gennaro Ruggiero
(CERN)
04/09/2008, 12:10
Microstrip edgeless silicon detectors have been successfully produced and tested. These detectors are fabricated with standard planar technology, reach full sensitivity in 50 um from the cut edge and can operate with high bias at room temperature.
These detectors employ a newly conceived terminating structure, which, although is extremely reduced with respect to the conventional ones, still...
Ronaldo Bellazzini
(INFN Pisa)
04/09/2008, 13:30
With the Gas Pixel Detector (GPD), the class of micro-pattern gas detectors has reached a complete integration between the gas amplification structure and the read-out electronics. To obtain this goal, three generations of application-specific integrated circuit of increased complexity and improved functionality has been designed and fabricated in deep sub-micron CMOS technology. This...
Galan Lacarra Javier
(Instituto de Fisica Nuclear y Altas Energias - Facultad de Cienc)
04/09/2008, 14:10
A low background Micromegas detector was operating at the sunrise side of the CAST (CERN Axion Solar Telescope) experiment during the first phase of the experiment (2002-2004). This detector, constructed of low radioactivity materials, operated efficiently and achieved a low background level of around 5x10-5 counts/keV/cm2/s in the 2-4 keV region. This performance was accomplished by...
Florian Haas
(Technische Universitat Munchen)
04/09/2008, 14:30
For its physics program with a high-intensity hadron beam of 2 x 10^7 particles per second, the COMPASS experiment at CERN requires tracking of charged particles scattered by very small angles with respect to the incident beam direction. While good resolution in time and space is mandatory, the challenge is imposed by the high beam intensity, requiring radiation-hard detectors which add very...
Ioanis Giomataris
(Centre d'Etudes de Saclay (CEA-Saclay))
04/09/2008, 14:50
A new type of radiation detector based in the spherical geometry is presented. The detector consists of large spherical gas volume with central electrode and radial electric field. Charges deposited in the drift volume are drifting to the central sensor where are amplified and collected. We introduce a new spherical proportional sensor located at the center of curvature acting as a...
Mr
Alexander Grint
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
This work describes the development of a dual layer Compton camera [1] to produce a 3D source image with a greater sensitivity than the mechanical collimation technique [2], presently used for SPECT (Single Photon Emission Computed Tomography) in medicine. The imaging of low energies is of particular importance as the current isotope of choice for SPECT in medicine is 99mTc, emitting photons...
Dr
Eiji Yoshida
(National Institute of Radiological Sciences)
04/09/2008, 15:10
Conventionally, PET scanners are used for the scintillator has high effective atomic number. Recently, novel scintillators like LaBr3 have excellent timing and energy resolutions were developed. LaBr3 has high performance for the PET scanner, but effective atomic number is lower than LSO. On the other hand, we developed the scatter reduction method using depth-of-interaction (DOI) information...
Fernando Mateo
(Universidad Politécnica de Valencia)
04/09/2008, 15:10
Traditionally, the most popular technique to predict the impact position of gamma photons on a PET detector has been Anger’s logic. However, it introduces nonlinearities that compress the light distribution, reducing the useful field of view and the spatial resolution, especially at the edges of the crystal scintillator. In this work we make use of neural networks to address a bias-corrected...
Mr
Matthew Dimmock
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
The PorGamRayS project is developing a proof of principle Portable Gamma Ray Spectrometer to perform Compton imaging in the energy range from 60keV to 2.0MeV. This novel detection system will be used for the remote imaging of the radiation field in a wide range of industrial and environmental applications. It will be constructed from a stack of room temperature semiconductors that will consist...
Dr
Christopher Hall
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
Digital Subtraction Angiography is an important technique used to image arterial blood flow using an introduced contrast agent. A mask image (using no contrast agent) is initially acquired which is subtracted from subsequent images after introduction of the contrast agent, resulting in images of the only the agent used. However, given a detector that measures position and energy rather than...
Dr
Bipin Singh
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
Dedicated high-speed microCT systems are being developed for noninvasive screening of small animals. Such systems require scintillators with high spatial resolution, high light yield, and minimal persistence to ensure ghost free imaging. Unfortunately however, afterglow associated with the microcolumnar CsI:Tl scintillator screens used in current high speed systems introduce image lag, leading...
Dr
Christoph Werner Lerche
(Universidad Politecnica de Valencia, Spain)
04/09/2008, 15:10
The center of gravity algorithm leads to strong artifacts for gamma-ray imaging detectors that are based on monolithic scintillation crystals and position sensitive photo-detectors. This is a consequence of using the centroids as position estimates. The charge division circuits which are used to compute the centroids can also be used to compute the standard deviation of the scintillation light...
Mr
Gyuseong Cho
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
Presently the gamma camera system is widely used in various medical diagnostic, industrial and environmental fields. Hence, the quantitative and effective evaluation of its imaging performance is essential for design and quality assurance. The NEMA standards for gamma camera evaluation are insufficient to perform sensitive evaluation. In this study, MTF(modulation transfer function),...
Mr
Khalid Alzimami
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
The utility of 18F-deoxyglucose (18-FDG) in cardiology, oncology, and neurology has generated great interest in a more economical ways of imaging 18FDG than conventional PET scanners. The main thrust of this work is to investigate the potential use of LaBr3:Ce materials in a low-cost FDG-SPECT system compared to NaI(Tl) using GATE Monte Carlo simulation.. System performance at 140 keV and 511...
Dr
Tatsuya Nakamura
04/09/2008, 15:10
Applications in Nuclear Medicine and Radiology
Poster
An effective pixel size of a two-dimensional wavelength shifting fibre (WLSF) neutron image detector was improved from 0.5 mm down to 0.17 mm with implementing a fibre optic taper (FOT). The main part of the prototype detector consisted with a thin ZnS/6LiF screen, the FOT, and the crossed WLSF ribbons for x and y coordinate. The WLSF image detector had 16 x 16 fibre channels and the light...
Dr
Mercedes Rodriguez-Villafuerte
04/09/2008, 17:50
A microPET system for small animal studies is currently being developed at Instituto de Fisica, UNAM. The main goal of this project is to build a cost-effective benchtop system that could be suitable for research purposes. The basic design uses off-the-shelf components and is being assembled using in-house built readout circuits and NIM electronics. In this work we are presenting the initial...
Dr
David Parker
(University of Birmingham)
04/09/2008, 18:10
The technique of positron emission particle tracking (PEPT), developed at Birmingham in the early 1990s, enables a radioactively-labelled tracer particle to be accurately tracked as it moves between the detectors of a positron camera. In 1999 the original Birmingham positron camera, which consisted of a pair of MWPCs, was replaced by a system comprising two NaI(Tl) gamma camera heads...
Norbert Wermes
(Physikalisches Institut)
05/09/2008, 09:00
Pixel Detectors as the current technology of choice for the innermost
vertex detection have now reached a stage where large detectors have
been built for the LHC experiments and a new era of developments,
both for hybrid and for monolithic and semi-monolithic pixel
detectors is in full swing. This is largely driven by the
requirements of the Super-LHC and by collider experiments which...
Dr
Devis Contarato
(Lawrence Berkeley National Laboratory)
05/09/2008, 09:40
A monolithic pixel sensor has been design and fabricated in a novel deep-submicron 0.15 micron Silicon-On-Insulator (SOI) CMOS technology. This combines a thin layer of CMOS electronics isolated from a high-resistivity silicon substrate that can be depleted as in standard reversely-biased silicon detectors. The first prototype chip features arrays of analog and digital pixels of 10 micrometer...
Dr
Peter Kodys
(Charles University)
05/09/2008, 10:00
A new generation of track detectors for high energy physics are being designed for track recognition with submicron precision. Pixel detectors with micron resolution are a basic pre-requisite of such designs. With such precise detectors, however, the determination of spatial resolution becomes complicated because both multiple scattering and intrinsic detector errors contribute equally...
Dr
Gianluca Traversi
(University of Bergamo)
05/09/2008, 10:20
This work aims at discussing the design criteria and the characterization results relevant to a novel kind of monolithic active pixel sensors (MAPS) in deep submicron CMOS technology (130nm minimum feature size) for vertexing applications at the ILC. Compared to other CMOS MAPS, such devices implement pixel-level data sparsification and time stamping, with similar functionalities as in hybrid...
Dr
Alessandro Gabrielli
(Dipartimento di Fisica Università di Bologna)
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
A prototype of a mixed-mode ASIC built up of a fast readout architecture that interfaces with a matrix of 4096 Monolithic Active Pixel Sensor (MAPS), via STM 130nm CMOS technology, was fabricated. Square groups of 16 pixels form a macro-pixel (MP). Each MP can be latched via single pixels (50 by 50 micron) and a time-stamp is associated with the frozen condition. The readout architecture is...
Mr
Dzmitry Maneuski
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
Monolithic active pixel sensor technology is a relatively inexpensive and reliable alternative to that of CCDs. Potential scientific applications of these devices include charged particle detection, indirect X-ray imaging and indirect neutron detection. This paper will report on the characterisation of three different sensor variants from the HEPAPS4 family. The sensors have identical 3MOS...
Dr
Celeste Fleta
(University of Glasgow)
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
3D detectors are photodiode detectors with n- and p-type electrode columns passing through a silicon substrate. Using this structure, the spacing between electrodes can be made much smaller than the substrate thickness, greatly reducing the collection time and operating voltage of the sensor. The structure should also reduce charge sharing between adjacent pixels, improving the image quality....
Mr
Troy Unruh
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
Silicon based diodes coated with a thin film of neutron reactive materials have been shown to produce excellent low efficiency neutron detectors. This work employs the same technology, but groups 25 equally sized and spaced diodes on a single 29 mm by 29 mm chip. The 5x5 chips have been fabricated and coated with a thin film of 6LiF for use as a low efficiency neutron beam monitor. The 5x5...
Dr
Anton Tremsin
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
Neutron counting detectors with boron or gadolinium doped microchannel plates (MCPs) proved to have very high detection efficiency, spatial and temporal resolution and have very low readout noise. In this paper we present the results of both theoretical predictions and experimental evaluations of detection efficiency and spatial resolution measured at cold and thermal neutron beamlines. The...
Dr
Marlon Barbero
(Physikalisches Institute, Universitaet Bonn)
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
A new pixel Front-End (FE) IC is being developed in a 130nm technology for use in the upgraded Atlas pixel detector. The new pixel FE will be made of smaller pixels (50x250/200um vs. 50x400um for the present FE, FE-I3), a much improved active area over inactive area ratio, and a new analog pixel chain tuned for low power and new detector input capacitance. The higher luminosity for which this...
Dr
Thalis Anaxagoras
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
We present a parametric CMOS Active Pixel Pixel for the evaluation of noise reduction architectures. The sensor is called e-Le-NA, which stands for Low Noise Active pixel sensor. It consists of fourteen different arrays for characterising and investigating method to reduce the noise in an image sensor. In a MAPS, the dominant source of noise is the reset noise. A conventional technique is to...
Mr
Evan Curwood
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
The emerging interest in coherent x-ray diffractive imaging (CXDI) is placing particular demands on position sensitive x-ray detectors. The technique typically requires a high efficiency, highly pixellated detector with a large dynamic range. CXDI is a good example of where hybrid pixel detectors will be a very competitive technology. The detector development group at the Monash Centre for...
Sung-Woo Kwak
(KINAC)
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
In these days, the threats relating to nuclear and radioactive materials have become a matter of internationally increased grave concern. The mobile radiation detection system has employed a NaI-based radiation detector to monitor in-transit nuclear material. In the design of a radiation detector for prevention of illicit trafficking of nuclear and radioactive materials, the trade-off should...
Mr
Ralf Engels
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
The detector group of the Central Institute of Electronics at the Forschungszentrum Jülich GmbH was founded in 1968. First developments aimed at a detector system with a position sensitive BF3 proportional counter for small angle neutron scattering, which was later used at a beamline of the research reactor FRJ2. At the end of the 70's first measurements were carried out with photomultiplier...
Dr
Masaki Hori
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
Several types of profile monitors used to measure the spatial and temporal profiles of pulsed antiproton beams at the Antiproton Decelerator (AD) facility of CERN is described. These include a highly sensitive, secondary electron emission chamber, a parallel plate ionization chamber, and a Lucite Cherenkov counter. These monitors were recently used in laser spectroscopy experiments of...
Dr
Giullio villani
(Rutherford Appleton Laboratory)
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
An innovative circuit topology for solid-state pixel detectors based on latch up effect is described. This effect, normally considered detrimental in CMOS devices when triggered by SEU or external radiation, is exploited in solid state electronic switches (e.g. thyristor and SCRs). Here it is proposed to use this effect as part of a building block for low power, low noise, fast and much...
Dr
Dave Langstaff
(University of Wales, Aberystwyth)
05/09/2008, 10:40
Pixel Detectors for Charged Particles
Poster
In detectors utilising microchannel plates as an amplification stage, there is a degree of charge cloud spreading within the microchannel plate stack and also between the microchannel plate stack and the readout device. This charge cloud spreading results multiple triggering within event counting detectors, leading to degradation of spatial resolution and statistical noise on the resultant...
Tatsuya Nakamura
(Japan Atomic Energy Agency)
05/09/2008, 10:40
Detectors for Synchrotron Radiation and Spallation Neutron Sources
Poster
An effective pixel size of a two-dimensional wavelength shifting fibre (WLSF) neutron image detector was improved from 0.5 mm down to 0.17 mm with implementing a fibre optic taper (FOT). The main part of the prototype detector consisted with a thin ZnS/6LiF screen, the FOT, and the crossed WLSF ribbons for x and y coordinate. The WLSF image detector had 16 x 16 fibre channels and the light...
Dr
Freya Blekman
(Cornell University)
05/09/2008, 11:30
The CMS Pixel Detector consists of three barrel layers closed by two forward/backward disks on each side of the interaction region, and provides a crucial contribution to pattern recognition, primary and secondary vertices reconstruction, as well as heavy flavour tagging. The sensors are n-on-n, with n+ implants on n bulk silicon, and a cell size of 100x150 um2. The Lorentz drift of electrons...
Dr
David Cussans
(University of Bristol)
05/09/2008, 12:10
The ISIS (In-Situ charge storage Imaging Sensor) is a monolithic active pixel sensor with memory cells in each pixel. The memory cells are implemented as a CCD register. The device is a "burst camera" with charge being clocked simultaneously into the registers in each pixel. This makes the ISIS an excellent sensor for the ILC vertex detector for various reasons. The sensors can be made very...
Prof.
Phil Allport
(U. of Liverpool)
05/09/2008, 12:30
