TPC Development at Cornell
The Cornell group is working with LC-TPC
collaborators to develop the “Large Prototype”
TPC for studies of gas-amplification devices,
and alignment, calibration and track finding/fitting
procedures.
Daniel Peterson
22-October-2007
a model of the endplate
and detector modules
This prototype will be operated at the EUDET
facility at DESY.
Cornell is developing and constructing the
endplate as well as the detector module support.
Providing the required panel locating precision
has required studies of the manufacturing
process including the machining and stress relief steps.
Bulk Micromegas
Purdue-3M Micromegas
triple-GEM
Collaborating with Purdue University, the Cornell
group is performing tests of gas-amplification devices
in a prototype TPC. The TPC has a 64cm drift
and accepts various gas-amplification devices
up to 10cm square.
Recent measurements have been made with a
“Bulk Micromegas” developed by the Orsay group,
a Micromegas developed by Purdue and the
3M corporation, and a triple-GEM (CERN).
Spatial resolutions for the “Bulk Micromegas” and
triple-GEM are compared (right).
a model of a detector
module including the
mechanical frame
details of the TPC assembly,
including GEM modules and
the field cage
measurements during studies
of the manufacturing process