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Spatial Resolution of a Micromegas-TPC Using the Charge Dispersion Signal | A. Bellerive
; K. Boudjemline
; R. Carnegie
; M. Dixit
; J. Miyamoto
; E. Neuheimer
; A. Rankin
; E. Rollin
; K. Sachs
; J.-P. Martin
; V. Lepeltier
; P. Colas
; A. Giganon
; I. Giomataris
; | Date: |
11 Oct 2005 | Abstract: | The Time Projection Chamber (TPC) for the International Linear Collider will need to measure about 200 track points with a resolution close to 100 $mu$m. A Micro Pattern Gas Detector (MPGD) readout TPC could achieve the desired resolution with existing techniques using sub-millimeter width pads at the expense of a large increase in the detector cost and complexity. We have recently applied a new MPGD readout concept of charge dispersion to a prototype GEM-TPC and demonstrated the feasibility of achieving good resolution with pads similar in width to the ones used for the proportional wire TPC. The charge dispersion studies were repeated with a Micromegas TPC amplification stage. We present here our first results on the Micromegas-TPC resolution with charge dispersion. The TPC resolution with the Micromegas readout is compared to our earlier GEM results and to the resolution expected from electron statistics and transverse diffusion in a gaseous TPC. | Source: | arXiv, physics/0510085 | Services: | Forum | Review | PDF | Favorites |
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