A scanning beam profile monitor is described that was developed for use along the Stanford two-mile linear accelerator. The maximum beam loss due to scattering caused by this monitor can be made to be a small fraction of that which would be caused by a Cerenkov radiator or scintillating screen. (To be submitted to the Review of Scientific Instruments) * Work supported by the U. S. Atomic Energy...

Nowadays, the MIMO can achieve fifth generation (5G) ultra-high capacity, but it is a great challenge for smartphone antenna to good isolation, high efficiency, and other performance in limited space. The paper designed completed an eight-port dual-polarized high-efficiency shared-radiator working 3.5 GHz (3.4–3.6 GHz) 5G mobile devices. two elements are regarded as one building block share rad...

The new type of ring-imaging Cherenkov detector technology called Dirc (an acronym for Detection of Internally Reflected Cherenkov (Light)) has been used successfully for hadronic particle identification in the BABAR experiment at the B Factory (PEP-II) located at the SLAC National Accelerator Laboratory. This paper describes the R&D for and the construction of the Dirc radiator bars and the pe...

Antennas that are capable to radiate in the Ultra-wideband (UWB) range is a major area of current research. The UWB range is accompanied through the integration of Multiple-InputMultiple-Output (MIMO). In this paper, two circular monopole antennas are acting as the radiating elements. A T-shape stub is placed between the radiator elements to enhance isolation. The proposed antenna is capable of...

A ring-imaging Čerenkov counter read out by a 100-channel PMT of active area 10×10 cm was operated successfully in a test beam at the BNL AGS with several radiator gases, including the heavy fluorocarbon C4F10 . Ring radii were measured for electrons, muons, pions and kaons over the particle momentum range from 2 to 12 GeV/c, and a best resolution of σr/r = 2.3% was obtained.

We understand the real world in terms of objects: When we look at a picture or our surroundings, or when we close our eyes and listen, we organize the information arriving from the outside world in terms of attributes for perceived, independent objects. “Independence” can refer to physical separability (the pen on my desk), behavioral autonomy (the hissing steam valve on the radiator), or more ...

We have observed Cherenkov rings from minimum-ionizing particles using a low-pressure, parallel-plate pad-chamber with a cesium-iodide solid photocathode . This detector is blind to minimum-ionizing particles, and sensitive to Cherenkov photons of wavelengths 170-210 rim. An average of 5 photoelectrons per Cherenkov ring were detected using a 2-cm-thick radiator of liquid C6F14 . This paper rep...

This paper reports the design of a Ka-band Equilateral triangular patch antenna (ETPA) fabricated using postCMOS and post-MMIC compatible process technology. The antenna uses an air-cavity underneath the patch radiator that is supported on thin dielectric membrane. The antenna structure was analysed and optimised using the finite element method (FEM) based Agilent High Frequency Structure Simul...

Methods for investigating the y rays from active isotopes are discussed. A method is described which permits the study of very faint samples. It is possible by this method to obtain information about the intensities as well as the energies of the y rays. Such investiga­ tions necessitate knowledge of the efficiency curve for a secondary-electron radiator. With the aid of the known term schemes ...

The success of the LHCb experiment depends heavily on particle identification over the momentum range 2−100 GeV/c. To meet this challenge, LHCb uses a Ring Imaging Cherenkov (RICH) system composed of two detectors with three radiators. RICH1 has both aerogel and gas (C4F10) radiators, while RICH2 has only a gas (CF4) radiator. The design of RICH1 is almost complete, whereas RICH2 has been const...