We have developed and constructed the field cage of a prototype Time Projection Chamber for research and development studies for a detector at the International Linear Collider. This prototype has an inner diameter of 72 cm and a length of 61 cm. The design of the field cage wall was optimized for a low material budget of 1.21 % of a radiation length and a drift field homogeneity of Delta(E)/(E) less or equal 10^-4. Since November 2008 the prototype has been part of a comprehensive test beam setup at DESY and used as a test chamber for the development of Micro Pattern Gas Detector based readout devices.
Cite
@article{arxiv.1006.3220,
title = {A Lightweight Field Cage for a Large TPC Prototype for the ILC},
author = {Ties Behnke and Klaus Dehmelt and Ralf Diener and Lea Hallermann and Takeshi Matsuda and Volker Prahl and Peter Schade},
journal= {arXiv preprint arXiv:1006.3220},
year = {2011}
}