Design and Performance of a New 307 Mpixel Ccd Vertex Detector*
نویسنده
چکیده
During the past year, the SLD Collaboration completed construction and began operation of a new vertex detector (VXD3) with 307,000,000 CCD pixels. This upgrade will improve the SLD measurement of the polarization-enhanced forwardbackward asymmetry for band cquarks and the precision of the measurement of the b-fraction in hadronic Z decays and opens the possibility to observe ~~-m.ixing. Full separation of primary, secondary and tertiary vertices is accessible.
منابع مشابه
VXD 3 : the SLD Vertex Detector Upgrade Based on a 307 MPixel CCD System
The SLD upgrade CCD vertex detector (VXD3) is described. Its 307 million pixels are assembled from 96 3.2 Mpixel CCDS of 13 cm2 each. The system has evolved from the pioneering CCD vertex detector VXD2, which has operated in SLD since 1992. The CCDS of VXD3 are mounted on beryllium ladders in three cylinders, providing three space point measurements along each track of about 5 microns resolutio...
متن کاملCurrent Performance of the SLD VXD3
During 1996, the SLD collaboration completed construction and began operation of a new charge-coupled device (CCD) vertex detector (VXD3). Since then, its performance has been studied in detail and a new topological vertexing technique has been developed. In this paper, we discuss the design of VXD3, procedures for aligning it, and the tracking and vertexing improvements that have led to its wo...
متن کاملThe SLD VXD3 Detector and Its Initial Performance*
The SLD collaboration completed construction of a new CCD vertex detector (VXD3) in January 1996 and started data taking in April 1996 with the new system. VXD3 is an upgrade of the original CCD vertex detector, VXD2, which had successfully operated in SLD for three years. VXD3 consists of 96 large area CCDs, each having 3.2 million 20pmx 20pm pixels. By reducing the detector material and lengt...
متن کاملMonolithic CMOS Pixel Detector for ILC Vertex Detection
Studies in the U.S., Europe, and Asia, have demonstrated the power of a pixel vertex detector in experiments at a future high energy linear collider. Silicon CCDs (Charged Coupled Devices) [1] seemed like the vertex detector sensors of choice for the International Linear Collider (ILC) until the accelerator technology decision. With the choice of a cold TESLAlike superconducting technology for ...
متن کاملBeam tests of a CCD tracker for vertex detector application
We have studied the performance of a CCD tracker using minimum ionizing particles (MIP’s) from KEK PS beam line. The detector consists of three layers of CCD sensors manufactured by Hamamatsu Photonics, which suppress the dark current at surface by one order of magnitude compared with that of the conventional ones. We have observed MIP’s can be detected with sufficient signal to noise ratio eve...
متن کامل