Optical quality assurance of GEM foils

Beam Performance of Tracking Detectors with Industrially Produced GEM Foils

Three Gas-Electron-Multiplier tracking detectors with an active area of 10 cm × 10 cm and a two-dimensional, laseretched orthogonal strip readout have been tested extensively in particle beams at the Meson Test Beam Facility at Fermilab. These detectors used GEM foils produced by Tech-Etch, Inc. They showed an efficiency in excess of 95% and spatial resolution better than 70 μm. The influence o...

Optical characterization of Bangerter foils.

PURPOSE Optical penalization is emerging as an alternative to patching for the treatment of amblyopia. Bangerter foils offer a form of optical penalization that is distinctly different from standard techniques making use of atropine or spectacle lens manipulation, or both, to produce defocus. The authors examined the optical properties of Bangerter foils and compared them with the effect of def...

Quality Assurance Whose Quality and Whose Assurance?

Government involvement in quality assurance is becoming the trend in many countries, including New Zealand. What values underpin the systems that evolve in each country, and who has given legitimacy to them? In the context of the prevailing ideology of early childhood, this paper unpacks quality assurance in Australia and comments on the assumptions, taken for granted premises and values which ...

Quality Assurance

Quality assurance.

Any facility or program operated by the Office of Mental Health shall restrict the use of personal cell phones, recording devices, and wireless devices on the grounds of such facility or program, as set forth in this policy directive, provided, however, that the use of personally owned cell phones, recording devices, and wireless devices within forensic and secure facilities or units shall be i...