Position Dependence of Charge Collection in Prototype Sensors for the CMS Pixel Detector

ArXiv physics/0312009 (2003)

Authors:

T Rohe, D Bortoletto, V Chiochia, LM Cremaldi, S Cucciarelli, A Dorokhov, M Konecki, K Prokofiev, C Regenfus, DA Sanders, S Son, T Speer, M Swartz

An aging study of industrially produced micro-patterned gas detectors

IEEE Nuclear Science Symposium Conference Record 5 (2003) 3723-3725

Authors:

PS Barbeau, J Collar, J Miyamoto, I Shipsey

Abstract:

Micropatterned gas detectors like GEMs and MICROMEGAS are being considered for time projection chambers (TPC) for linear collider experiments. These devices are made mainly of Kapton insulators and thick copper layers. Because in the micropatterned gas detectors a dense plasma of avalanche electrons and ions are created in a small volume, aging due to polymerization is a concern. A shot-term aging study on a single GEM foil produced by 3M using reel-to-reel flex circuit technology is reported.

Negative ion drift gas mixtures in GEM detector application to axion → γγ search

IEEE Nuclear Science Symposium Conference Record 2 (2003) 870-872

Authors:

R Ayad, I Shipsey, J Miyamoto, CJ Martoff, R Ayad, M Katz-Hyman, G Bonvicini

Abstract:

We report on preliminary tests of a 2×2 cm2 GEM detector in a negative ion drift chamber. Stability and gas gain results for several negative ion gas mixtures are reported. The micro-structured detectors work reliably in negative ion gas mixtures based on CS2 and achieve gains comparable with those obtained in conventional electron drift gases.

An aging study of a MICROMEGAS with GEM preamplification

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 515:1-2 (2003) 261-265

Authors:

S Kane, J May, J Miyamoto, I Shipsey

Heavy flavor properties of jets produced in $p\bar{p}$ interactions at $sqrt{s}=$ 1.8 TeV

ArXiv hep-ex/0311051 (2003)