In this paper, we present a Chinese word segmentation system which is consisted of four components, i.e. basic segmentation, named entity recognition, error-driven learner and new word detector. The basic segmentation and named entity recognition, implemented based on conditional random fields, are used to generate initial segmentation results. The other two components are used to refine the re...

The effect of annealing on track density in unirradiated CR-39 and gamma irradiated CR-39 neutron detectors was investigated. One group of CR-39 detectors (25.4 x 12.7 x 0.635 mm) was irradiated with 1.3 kGy of 6oCo gamma rays. The other group of detectors was not irradiated with gamma radiation. The two sets of detectors were then annealed at temperatures ranging from room temperature (2OOC) t...

We have developed a new technique that allows the trajectories of ionizing particles to be imaged with very high spatial and temporal resolution. This technique, developed for future experiments in high-energy physics, may also be applied in other fields. Central to the technique is a detector consisting of a bundle of thin, glass capillaries filled with a liquid scintillator of high refractive...

The DELPHI experiment at LEP is the first collider experiment with hybrid pixel detectors contributing to its track reconstruction. The pixel detector has been installed in 1996 with the final DELPHI Silicon Tracker, an assembly of microstrip, ministrip and pixel detectors optimized for the operation at LEP2. It was completed for the physics period in 1997. The pixel detector comprises 1.2 mill...

For the high granularity and energy resolution, Silicon Strip Detector (SSD) is widely applied in assembling telescopes to measure charged particles heavy ion reactions. In this paper, we present a novel method achieve track recognition SSD of Compact Spectrometer for Heavy Ion Experiment (CSHINE). Each telescope consists single-sided silicon strip detector (SSSSD) double-sided (DSSSD) backed b...

We have developed a novel data acquisition system for measuring tracking parameters of a silicon detector in a particle beam. The system is based on a commercial Analog-to-Digital VME module and a PC Linux based Data Acquisition System. This DAQ is realized with C++ code using object-oriented techniques. Track parameters for the beam particles were reconstructed using off-line analysis code and...

car body acceleration is an important factor affecting track safety and ride comfort, which are two primary aspects of railway systems. though track level is an important source of wagon body acceleration, no quantitative relation between them is available and the aim of this paper is to propose a method to address this issue. to do so, car body acceleration is determined using a 10 dof simulat...

This paper reports the measurement of high energy neutron component (E > 50 MeV) carried out at the Indus-1 (450 MeV) and Indus-2 (2.5 GeV) electron accelerators (RRCAT, Indore, India). The study is based on the registration of neutron induced fission fragments from bismuth radiators in the adjoint solid polymeric track detectors. These bismuth fission detector (BFD) stacks are exposed at the i...

Events recorded in Au+Au collisions at a beam energy of 1.23 GeV/u have the highest multiplicities measured with HADES [1]. The track reconstruction and particle identification in the high track density environment are challenging. In case of dileptons: (i) A Ring Imaging Cherenkov detector (RICH) [2] is essential since it is the most important detector component for single lepton identificatio...

The silicon pixel detector is the innermost component of the CMS tracking system, providing high precision space point measurements of charged particle trajectories. The current pixel detector is designed to operate at a maximum luminosity of 1 × 1034cm−2s−1. Before 2018 the instantaneous luminosity of the LHC is expected to reach 2 × 1034cm−2s−1, which will significantly increase the number of...