A 10 MHz Beam Counter and a Multiplicity Detector for the E864 Spectrometer

نویسندگان

  • P. Haridas
  • I. A. Pless
  • G. Van Buren
  • K. Barish
  • R. D. Majka
چکیده

The E864 experiment at BNL requires a beam counter and multiplicity detector system that can perform at an incident beam rate of 10 Au ions per second. We have developed and tested a 150 m thick quartz Cherenkov beam counter and a scintillator based multiplicity-trigger counter during the rst run of this experiment in 1994. We obtained a time resolution of 78 ps for the beam counter at an incident beam rate 5 10 Hz and 100 ps at a rate of 1 10 Hz. Pulse height discrimination is used to obtain a minimum bias and a 10% centrality trigger from the multiplicity detectors. The multiplicity counter has a time resolution of 250 ps.

برای دانلود رایگان 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

ar X iv : n uc l - ex / 0 20 90 15 v 1 2 3 Se p 20 02 1 Leptonic Observables in Ultra - Relativistic Heavy Ion Collisions

We report on leptonic observables by the PHENIX experiment from data taken during Run II at the Relativistic Heavy Ion Collider (RHIC). We show first results on φ −→ K + K − , e + e − , low and intermediate mass dielectron continuum, single electrons from charm, and J/ψ yields in proton-proton and Au-Au collisions at √ s N N = 200 GeV. The PHENIX experiment was designed with the specific capabi...

متن کامل

Measurement of stereotactic beam data of 9 MV X-rays using diode detector

Background: Radiosurgery is a focal brain irradiation technique that delivers, usually in a single session, high dose of ionizing radiation. The presence of lateral electronic disequilibrium and steep dose gradients in small fields demands special attention to the selection of a suitable detector with respect to its size, composition and response. Materials and Methods : Small circular fields w...

متن کامل

Creation and measurement of broadband squeezed vacuum from a ring optical parametric oscillator.

We report a 65 MHz-bandwidth triangular-shaped optical parametric oscillator (OPO) for squeezed vacuum generation at 860 nm. The triangle structure of our OPO enables the round-trip length to reach 45 mm as a ring cavity, which provides a counter circulating optical path available for introducing a probe beam or generating another squeezed vacuum. Hence our OPO is suitable for the applications ...

متن کامل

The HADES Upgrade: first Results

During the year 2010 the HADES Upgrade project has been finalized and the spectrometer has been commissioned in three test beam times at the end of the year. The HADES upgrade program had the following main goals: (1) The installation of a new Resistive Plate Chamber (RPC) detector to increase the time resolution and granularity of the time-of-flight system at the lower polar angles (θ < 45). (...

متن کامل

Introducing New Structures for D-Type Latch and Flip-Flop in Quantum-Dot Cellular Automata Technology and its Use in Phase-Frequency Detector, Frequency Divider and Counter Circuits

Quantum-dot cellular automata (QCA) technology is an alternative to overcoming the constraints of CMOS technology. In this paper, a new structure for D-type latch is presented in QCA technology with set and reset terminals. The proposed structure, despite having the set and reset terminals, has only 35 quantum cells, a delay equal to half a cycle of clocks and an occupied area of ​​39204 nm2. T...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998