A5101598958- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- CCD and CMOS Imaging Sensors
- Advanced Optical Sensing Technologies
- Nuclear Physics and Applications
- Astrophysics and Cosmic Phenomena
- Advanced Semiconductor Detectors and Materials
- Analog and Mixed-Signal Circuit Design
- Radiation Effects in Electronics
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Ultrasound and Hyperthermia Applications
- Semiconductor Quantum Structures and Devices
- Image Processing Techniques and Applications
- Spectroscopy and Laser Applications
- Computational Physics and Python Applications
- Pulsars and Gravitational Waves Research
- Silicon and Solar Cell Technologies
- Advanced Optical Imaging Technologies
Heidelberg University
2014-2024
Kirchhoff (Germany)
2009-2023
Tsinghua University
2019
Institute of High Energy Physics
2016-2017
Chinese Academy of Sciences
2016-2017
Beijing Shijingshan Hospital
2017
University of Chinese Academy of Sciences
2017
Anhui Provincial Hospital
2012-2015
Peng Huanwu Center for Fundamental Theory
2003
We propose an experiment (Mu3e) to search for the lepton flavour violating decay mu+ -> e+e-e+. aim ultimate sensitivity of one in 10^16 mu-decays, four orders magnitude better than previous searches. This is made possible by exploiting modern silicon pixel detectors providing high spatial resolution and hodoscopes using scintillating fibres tiles precise timing information at particle rates.
An analog hadron calorimeter (AHCAL) prototype of 5.3 nuclear interaction lengths thickness has been constructed by members the CALICE Collaboration. The AHCAL consists a 38-layer sandwich structure steel plates and highly-segmented scintillator tiles that are read out wavelength-shifting fibers coupled to SiPMs. signal is amplified shaped with custom-designed ASIC. A calibration/monitoring system based on LED light was developed monitor SiPM gain measure full response curve in order correct...
The Mu3e experiment aims to find or exclude the lepton flavour violating decay $\mu \rightarrow eee$ at branching fractions above $10^{-16}$. A first phase of using an existing beamline Paul Scherrer Institute (PSI) is designed reach a single event sensitivity $2\cdot 10^{-15}$. We present overview all aspects technical design and expected performance phase~I detector. high rate up $10^{8}$ muon decays per second low momenta electrons positrons pose unique set challenges, which we tackle...
Time of flight (TOF) measurements in positron emission tomography (PET) are very challenging terms timing performance, and should ideally achieve less than 100 ps FWHM precision. We present a time-based differential technique to read out silicon photomultipliers (SiPMs) which has 20 electronic jitter. The novel readout is fast front end circuit (NINO) based on first stage current mode amplifier with Ω input resistance. Therefore the inputs connected differentially SiPM's anode cathode ports....
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded high granularity calorimeters. Pairs overlaid pion showers from CALICE 2007 beam are reconstructed by PandoraPFA program developed to implement PFA for future lepton collider. Recovery neutral hadron's energy vicinity charged hadron is studied. impact two overlapping on resolution investigated. dependence confusion error distance between 10 GeV and derived...
The energy resolution of a highly granular 1 m3 analogue scintillator-steel hadronic calorimeter is studied using charged pions with energies from 10 GeV to 80 at the CERN SPS. for single hadrons determined be approximately 58%/sqrt(E/GeV}. This improved 45%/sqrt(E/GeV) software compensation techniques. These techniques take advantage event-by-event information about substructure showers which provided by imaging capabilities calorimeter. reconstruction either corrections based on local...
Abstract The CALICE collaboration is developing highly granular electromagnetic and hadronic calorimeters for detectors at future energy frontier electron-positron colliders. After successful tests of a physics prototype, technological prototype the Analog Hadron Calorimeter has been built, based on design construction techniques scalable to collider detector. consists steel absorber structure active layers small scintillator tiles that are individually read out by directly coupled SiPMs....
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For calorimeter, one option a highly granular sampling calorimeter with steel as absorber scintillator layers active material. High granularity obtained by segmenting into small tiles individually read out via silicon photo-multipliers (SiPM). A prototype has been built, consisting thirty-eight sensitive layers, segmented about...
The EndoTOFPET-US project aims to develop a multimodal detector foster the development of new biomarkers for prostate and pancreatic tumors. will consist two main components: an external plate, PET extension endoscopic ultrasound probe. plate is array LYSO crystals read out by silicon photomultipliers (SiPM) coupled Application Specific Integrated Circuit (ASIC). internal probe be highly integrated miniaturized made fully digital SiPM featuring photosensor elements readout in same chip....
STiC is an application specific integrated circuit (ASIC) for the readout of silicon photomultipliers. The chip has been designed to provide a very high timing resolution time-of-flight applications in medical imaging and particle physics. It dedicated particular EndoToFPET-US project, which developing endoscopic PET detector combined with ultrasound early pancreas prostate cancer detection. This system aims spatial 1 mm 200 ps FWHM. analog frontend can use either differential or single...
A prototype silicon-tungsten electromagnetic calorimeter for an ILC detector was tested in 2007 at the CERN SPS test beam. Data were collected with electron and hadron beams energy range 8 to 80 GeV. The analysis described here focuses on interactions of pions calorimeter. One main objectives CALICE program is validate Monte Carlo tools available design a full-sized detector. Si-W are therefore confronted predictions various physical models implemented GEANT4simulation framework.
Calorimeters with a high granularity are fundamental requirement of the Particle Flow paradigm. This paper focuses on prototype hadron calorimeter analog readout, consisting thirty-eight scintillator layers alternating steel absorber planes. The plates finely segmented into tiles individually read out via Silicon Photomultipliers. presented results based data collected pion beams in energy range from 8 GeV to 100 GeV. fine segmentation sensitive and sampling frequency allow for an excellent...
STiC is a mixed-mode Application Specific Integrated Circuit (ASIC) for Silicon Photomultiplier (SiPM) readout with very high timing resolution. It designed the Time-of-Flight (ToF) measurement in Positron Emission Tomography (PET) and energy physics experiments. dedicated particularly to EndoTOFPET-US project, which developing building multi-modal instrument combing ToFPET ultrasound endoscopy development of new biomarkers pancreas prostate oncology. A 64-channel prototype (STiC v3) has...
A first prototype of a scintillator strip-based electromagnetic calorimeter was built, consisting 26 layers tungsten absorber plates interleaved with planes 45×10×3 mm3 plastic strips. Data were collected using positron test beam at DESY momenta between 1 and 6 GeV/c. The prototype׳s performance is presented in terms the linearity resolution energy measurement. These results represent an important milestone development highly granular calorimeters strip technology. number possible design...
Silicon photomultiplier timing chip (STiC) is a 64-channel mixed-mode application-specific integrated circuit in the 0.18-μm CMOS technology from Univited Microelectronics Corporation (UMC) for silicon (SiPM) readout with very high resolution. It designed time-of-flight measurements positron emission tomography and high-energy physics experiments. In order to achieve best performance without compromising charge/energy measurement, novel time-based signal processing technique called...
MuTRiG is a mixed signal Silicon Photomultiplier readout ASIC designed in UMC 180 nm CMOS technology for precise timing and high event rate applications energy physics experiments medical imaging. It dedicated to the of scintillating fiber detector tile Mu3e experiment. The chip extends excellent performance STiCv3 with fast digital applications. fully differential SiPM channels 50 ps time binning TDCs are complemented by an upgraded logic 1.28 Gbps LVDS serial data link. design...
Time of flight (TOF) measurements in positron emission tomography (PET) are very challenging terms timing performance, and should achieve ideally less than 100 ps FWHM precision. We present a time-based differential technique to read out SiPMs that has 25 rms electronic jitter. The novel readout is fast front end circuit (NINO) based on first stage current mode amplifier with 20 ¿ input resistance. Therefore the inputs connected differentially SiPM's anode cathode ports. leading edge output...
A prototype module for an International Linear Collider (ILC) detector was built, installed, and tested between 2006 2009 at CERN Fermilab as part of the CALICE test beam program, in order to study possibilities extending energy sampling behind a hadronic calorimeter providing muon tracking. The "tail catcher/muon tracker" (TCMT) is composed 320 extruded scintillator strips (dimensions 1000 mm x 50 5 mm) packaged 16 one-meter square planes interleaved steel plates. were read out with...
Lepton colliders are considered as options to complement and extend the physics programme at Large Hadron Collider. The Compact Linear Collider (CLIC) is an e+e− collider under development aiming centre-of-mass energies of up 3 TeV. For experiments CLIC, a hadron sampling calorimeter with tungsten absorber proposed. Such provides sufficient depth contain high-energy showers, while allowing compact size for surrounding solenoid. A fine-grained prototype plates scintillator tiles read out by...
STiC is a mixed mode 16-channel ASIC chip in UMC 0.18 /Lm CMOS technology aiming at Silicon Photomultiplier (SiPM) readout with optimal timing resolution. It designed for ToF measurements HEP and medical imaging applications dedicated particular to the ENDOToFPET·US project, which aims providing powerful endoscopic Time· of-Flight PET system early prostate pancreas cancer diagnostics. The goal of this provide spatial resolution order 1 mm Time-of-Flight 200 ps FWHM. has differential...
We investigate the three dimensional substructure of hadronic showers in CALICE scintillator-steel calorimeter. The high granularity detector is used to find track segments minimum ionising particles within showers, providing sensitivity spatial structure and details secondary particle production cascades. multiplicity, length angular distribution identified are compared GEANT4 simulations with several different shower models. Track also provide possibility for in-situ calibration highly...