multi wire drift chambers

This results in higher resolution and wider wire spacing than can be obtained with simple planar or cylindrical multiwire proportional chambers. Drift chamber – field formation Introduce field wires to avoid low field regions, i.e. Georges Charpak Nobel Prize 1992 Invention of the Multi-wire Proportional Chamber (MWPC) A “drift chamber” is an adaptation of a “multi-wire proportional chamber” in which the fast timing information is measured to derive precision position information. An array comprising eight multiwire drift chambers has been developed and installed in the g-2 muon storage ring at CERN with the main objectives being to measure the circulating beam profile and the momenta of decay electrons. Who? adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A long drift-times Uniform drift field requires: Gap length/wire spacing ≈ 1 i.e. Multiwire and drift chambers have been operated with a variety of gas fillings from PHYSICS 61B at University of California, Irvine Abstract. Constructional design features include narrow framework and an extremely thin curved end member, the latter having been converted into a sensitive drift space.

Next: Drift Tube Previous: Drift Angle Drift Chamber A multiwire chamber in which spatial resolution is achieved by measuring the time electrons need to reach the anode wire, measured from the moment that the ionizing particle traversed the detector. for typical convenient wire spacing one needs thick chambers O(cm) Adjustable field multi-wire drift chamber: introduction of voltage divider via cathode wire … An array comprising eight multiwire drift chambers has been developed and installed in the g-2 muon storage ring at CERN with the main objectives being to measure the circulating beam profile and the momenta of decay electrons.

The principle of operation of a multiwire drift chamber is shown in Figure 6.6.

The general concept of the upgrade is based on the Trigger and Readout Board (TRB). In this context, a fast and reliable data acquisition of the 24 Multiwire Drift Chambers (MDCs) is developed. Drift chambers Measure arrival time of electrons at sense wire relative to a time t 0. anode TDC Start Stop DELAY scintillator drift low field region drift high field region

D. Peterson, DR101: Drift Chambers, 01-November-2004 3 Why?