منابع مشابه
Operation of a double-phase pure argon Large Electron Multiplier Time Projection Chamber: comparison of single and double phase operation
We constructed and operated a double phase (liquid-vapour) pure argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC) with a sensitive area of 10x10 cm2 and up to 30 cm of drift length. The LEM is a macroscopic hole electron multiplier built with standard PCB techniques: drifting electrons are extracted from the liquid to the vapour phase and driven into the holes of the LEM whe...
متن کامل3 GEM Operation in Negative Ion Drift Gas Mixtures
The first operation of GEM gas gain elements in negative ion gas mixtures is reported. Gains up to several thousand were obtained from single-stage GEMs in CS 2 vapor at low pressure, and in mixtures of CS 2 with Argon and Helium, some near 1 bar total pressure.
متن کاملThick GEM versus thin GEM in two-phase argon avalanche detectors
The performance of thick GEMs (THGEMs) was compared to that of thin GEMs in two-phase Ar avalanche detectors, in view of their potential application in coherent neutrino-nucleus scattering, dark-matter search and in other rare-event experiments. The detectors comprised a 1 cm thick liquid-Ar layer followed by either a double-THGEM or a triple-GEM multiplier, operated in the saturated vapor abov...
متن کاملOrbicularis-levator fixation in double-eyelid operation.
One of the characteristic features of the East Asian person's eyelids is the lack of a supratarsal fold. A relaxed upper eyelid skin, due to the lack of supratarsal fixation, causes coverage of the tarsal margin of the upper eyelid. Thus the palpebral fissure looks smaller, giving a slit-eye appearance. Unlike those lids with a natural supratarsal crease, the levator palpebrae muscle and/or apo...
متن کاملOperation of a single-GEM in noble gases at high pressures
We report the performance of a single-Gas Electron Multiplier (GEM) operating in pure Ar, Xe, and in Ar-50lmbar Xe mixtures, in the range of 1–7lbar. The maximum gain and voltage that can be applied to the GEM are investigated as a function of filling pressure and compared to the results obtained with triple-GEM and MHSP (Micro Hole and Strip Plate) multipliers. The maximum gain achieved at 1lb...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2009
ISSN: 0168-9002
DOI: 10.1016/j.nima.2008.08.017