Research & Development for the BTeV Program

这项提案要求支持BTeV的研发工作，BTeV是Fermilab最近批准的一个项目。合作的大学团体需要研发支持，以确保BTeV探测器与欧洲竞争对手欧洲核子研究中心实验室的LHCb同时运行。BTeV是一个旨在挑战标准模型(SM)对b夸克和c夸克系统中CP破坏、混合和罕见衰变的解释的程序。要利用Tevatron对撞机产生的大量b夸克和c夸克，需要一个高度专业化的探测器，不受用于研究高横向动量物理的中心几何结构的限制，也不受电子-正电子对撞机中相对较低的b夸克和c夸克产生率的限制。BTeV的主要特点包括：(1)位于红外区的偶极子，使BTeV能有效地接受BTeV；(2)基于平面像素阵列的精确顶点探测器；(3)1级分离的顶点触发器，使BTeV对大多数终态(包括纯强子模式)有效；(4)使用环形成像切伦科夫探测器进行出色的带电粒子识别；(5)高质量的铅钨状态电磁量热计，能够用单光子重建终态；P0‘S，h’s或h‘S，(6)使用稻草管和硅微带探测器的精确跟踪，它提供了优异的动量和质量分辨率，(7)使用能够提供双分子触发器的专用探测器出色地识别µ子，以及(8)非常高速和高通量的数据采集系统，它不需要将实验调到特定的最终状态。

This proposal requests support for R&D work on BTeV, a recently approved program at Fermilab. The collaborating university groups need R&D support to ensure that the BTeV detector is running at the same time as the European competition, LHCb at the CERN laboratory. BTeV is a program designed to challenge the Standard Model (SM) explanation of CP violation, mixing and rare decays in the b-quark and the c-quark systems. Exploiting the large numbers of b-quarks and c-quarks produced at the Tevatron collider requires a highly specialized detector, unconstrained by a central geometry that is prescribed to study high-transverse-momentum physics, and not limited by the relatively low production rate of b-quarks and c-quarks in electron-positron colliders. BTeV excels in several crucial areas including triggering on decays with purely hadronic final states, charged particle identification, electromagnetic calorimetry, and proper time resolution.Key features of BTeV include: (1) a dipole located at the IR, which gives BTeV an effective "two arm" acceptance, (2) a precision vertex detector based on planar pixel arrays, (3) a detached vertex trigger at level 1 that makes BTeV efficient for most final states, including purely hadronic modes, (4) excellent charged particle identification using a Ring Imaging Cherenkov Detector, (5) a high quality lead-tungstate electromagnetic calorimeter capable of reconstructing final states with single photons, p0's, h's, or h''s and of identifying electrons, (6) precision tracking using straw tubes and silicon microstrip detectors, which provide excellent momentum and mass resolution, (7) excellent identification of muons using a dedicated detector with the ability to supply a dimuon trigger, and (8) a very high speed and high throughput data acquisition system which eliminates the need to tune the experiment to specific final states.