A Test System for the Hera-b Online Trigger and Reconstruction Farm

نویسنده

  • A. Gellrich
چکیده

For the HERA-B experiment a processor farm for the third level trigger and full event reconstruction is planned. It will consist of more than 100 processor nodes, receiving data via high speed data links from a switching network. In 1996, a VME-based system (test farm) was built to test a possible implementation. In parallel, investigations of alternative, non-VME-based solutions for the processor nodes which might ooer a better price/performance ratio have been started.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Test System for the HERA - B L 3 / L 4 Processor FarmR

For the HERA-B experiment, which will start taking data in 1998, a multi-processor system (processor farm) is planned to perform the third level trigger task and the full event reconstruction online. To study possible architectures and implementations of hardware and software, it is foreseen to build a test system for the processor farm in 1996. If the system can be completed in time, a rst tes...

متن کامل

1 Design and Simulation of the on - Line Trigger and Reconstruction Farm for the Hera - B Experiment

The common third level trigger and forth level reconstruction farm for the future HERA-B experiment will have to perform full on-line event reconstruction and calibration for an expected input rate of 2000 events/s. More than a hundred powerful RISC processors connected in a network capable of distributing several hundreds of MB/s with low latency are likely to be necessary for this task. Prope...

متن کامل

HERA-B Framework for Online Calibration and Alignment

This paper describes the architecture and implementation of the HERA-B framework for online calibration and alignment. At HERA-B the performance of all trigger levels, including the online reconstruction, strongly depends on using the appropriate calibration and alignment constants, which might change during data taking. A system to monitor, recompute and distribute those constants to online pr...

متن کامل

A Prototype System for the Processor Farm of theHERA - B Experiment at HERA

For the HERA-B experiment at HERA multi-processor systems (farms) for the last levels of the trigger and data acquisition system are planned. Based on implementation studies a concept for a prototype system was derived which will be set up in 1997. It will contain already the main components of the nal system. The hardware decision for the processor nodes will be mainly innuenced by the price/p...

متن کامل

Higher Level Trigger Systems for the HERA-B experiment

The HERA-B experiment[1, 2] is designed for observation of CP violation in the B-meson system at the HERA machine in DESY. The data acquisition and triggering system must cope with a half million detector channels, a 40 MHz interaction rate and a signal to background ratio of 10 10. A highly selective multi-level trigger and high bandwidth data acquisition system has been designed and is curren...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996