The BABAR Calorimeter Light Pulser System
نویسنده
چکیده
To make precision measurements with a CsI(Tl) calorimeter in a high luminosity environment requires that the crystals are well calibrated and continually monitored for radiation damage. This should not effect the total integrated luminosity which is particularly important for the BABAR calorimeter to enable it to make CP violation measurements in the B meson system. To achieve this goal a fibre-optic light pulser system was designed using xenon flash lamps as the light source. A novel light distribution method was developed using an array of graded index microlenses. Some initial results from performance studies are presented. 1)On behalf of the BABAR collaboration.
منابع مشابه
Design and Performance of the Level 1 Calorimeter Trigger for the BaBar Detector
Since May 1999 the BaBar detector has been taking data at the PEP-II asymmetric electron-positron collider at the Stanford Linear Accelerator Center, California. This experiment requires a very large data sample and the PEP-II accelerator uses intense beams to deliver the high collision rates needed. This poses a severe challenge to the BaBar trigger system, which must reject the large rate of ...
متن کاملCalibration and monitoring for crystal calorimetry
Crystal calorimetry provides excellent energy resolution in high energy and nuclear physics. The light output of heavy crystal scintillators, however, suffers from not negligible damage in radiation environment. A precision calibration and monitoring thus is crucial for maintaining crystal precision in situ. The performance of calibration and monitoring approaches used by BaBar, CLEO and L3 exp...
متن کاملPrecision Calibration of the DØ HCAL in Run II
Most of the physics analyses at a hadron collider rely on a precise measurement of the energy of jets in the final state. This requires a precise in situ calibration of the calorimeter with the final detector setup. We present the basic procedure and results of the in situ gain calibration of the D0 HCAL in Run II. The gain calibration works on top of the pulser-based calibration of the readout...
متن کاملThe CsI ( Tl ) Calorimeter of the BaBar Detector
The Asymmetric B-Factory at the Stanford Linear Accelerator Center will study the B-B meson system with focus on CP violation. Its detector BaBar contains a high-resolution CsI(Tl) calorimeter, which is currently under construction. The nal design of the calorimeter (from the crystals to the calibration system) will be presented in this report. Invited talk presented at the 7th International Co...
متن کاملDesign and application of the reconstruction software for the BaBar calorimeter
The BaBar high energy physics experiment will be in operation at the PEP-II asymmetric e+e− collider in Spring 1999. The primary purpose of the experiment is the investigation of CP violation in the neutral B meson system. The electromagnetic calorimeter forms a central part of the experiment and new techniques are employed in data acquisition and reconstruction software to maximise the capabil...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000