Charge

The report of the International Linear Collider Technical Review Committee was the first attempt to gather in one document the current status of all major positron-electron linear collider projects in the world. The report was the result of a collaborative effort of scientists from many laboratories working together during that year.

Original Charge

A first and preliminary organizational meeting of the Interlaboratory Collaboration was held on October 18, 1993, during LC93 at SLAC. At that time, DESY, KEK and SLAC presented drafts of proposals for Memoranda of Understanding, and various discussions took place on how this international collaboration might be orchestrated. The first official meeting of the Collaboration Council was held in June 1994 at EPAC 94 in London. The Council, as one of its first missions, decided to create a Technical Review Committee and asked its members to prepare a report, in accordance with the following charge:

"The Technical Review Committee is to consider the goal to design, build, and operate a TeV-scale linear electron-positron collider capable of satisfying the need to explore the particle physics of this energy range. Specifically, the Committee is to examine accelerator designs and technologies suitable for a collider that will initially have center-of-mass energy of 500 GeV and luminosity in excess of , and be built so that it can be expanded in energy and luminosity to reach 1 TeV center-of-mass energy with luminosity of . The Committee should consider construction and operation of both the initial facility and the upgrade path to 1 TeV. The Committee is also asked to comment on the potential of technologies to reach higher energies and luminosities, and to provide alternative physics capabilities, for example gamma-gamma collisions. The Technical Review Committee is to identify the accelerator physics and technological requirements for each approach to provide particle physics opportunities at the energy and luminosity goals stated above. The report of the Committee should contain a brief commentary of the status of and expected progress toward understanding and achieving the most important of these requirements. The Committee should attempt to identify areas of possible further collaboration in the world-wide linear collider R&D program. A draft of the Committee report should be submitted to the Collaboration Council shortly after the LC95 meeting scheduled for March 1995 in Japan."

As a result of deliberations at the ICFA meeting of February 8 and 9, 2001 at DESY, Professor H. Sugawara as chairman of ICFA requested that the International Linear Collider Technical Review Committee (ILC-TRC) reconvene its activities to produce a second report.

Second Charge

	To assess the present technical status of the four LC designs at hand, and their potentials for meeting the advertised parameters at 500 GeV c.m. Use common criteria, definitions, computer codes etc., for the assessments
	To establish, for design, the R&D work that remains to be done in the next few years to prepare a Conceptual Design Report from which final costs can be calculated and construction can proceed
	To assess the potential of each design for reaching higher energies above 500 GeV c.m., and the R&D work needed to reach this potential
	To suggest future areas of collaboration