Post on 06-Jan-2018
description
Chicago Projects/Facilities
Simon Swordy - University of Chicago28th January 2009, PEBS meeting CERN
First measurement of positrons in cosmic rays(DeShong, Hildebrand and Meyer, 1964)
Showed mostly secondary origin
(flew mid-1980s)
HEAT - eplus/minus
HEAT eplus-minus 1994
(Collaboration of ~5 US institutions includingChicago, Michigan, Indiana, Wash U. UC Irvine)
140 Multi-wireProportional Chambersmeasure energy loss to identify particlespecies.
Superconducting Magnet Spectrometer with Drift Tube Hodoscope (continuous tracking) measures rigidity. This determines the particle’s charge sign and momentum.
10 kG field MDR extends to ~350 GV
65 m tracking accuracy
Time-of-FlightScintillatorstrigger data acquisition,measure particle charge and determine direction of travel.
1 METER
HEAT pbar
Version for 1997 flight
Prep and Launch of 1997 version, note payload size relative to balloon
Heavy nucleus rings from 1991 flight - note this carbon here has totalenergy ~12*390 GeV = 4.6TeV. Also note background is easily identifiable
TRACER – high energy composition
Chicago Electronics Shop
Large experience in HEP detector systems (CDF, ATLAS, DoubleChooz…etc)
New leader (as of early 2008); Jean-Francois Genat from Paris-6/Saclay
Already working with DRS4 switched capacitor chip
Local balloon program engineer – Casey Smith
CREST
Cosmic Ray Electron Synchrotron Telescope (reverse side)
Chicago High Bay
CREAM-I TRD in transit in Chicago high bay