Mike Harrison | 6 January 2011Is there ever a good time to be proposing the creation of a large and complex science facility? Probably not, but at face value we seem to have chosen a particularly inopportune moment to be raising this issue.
Category: Director's Corner | Tagged: funding, overview
Barry Barish | 16 December 2010Today, I describe the second of the proposed change actions, which has been stated as follows: "We propose to change the main linac tunnel configuration to one with only a single, accelerator-enclosure tunnel, thereby eliminating the support equipment tunnel proposed in the Reference Design. We propose to develop and include in the baseline two novel High-Level RF power source and distribution schemes ("KCS" and "DRFS") that are better suited to a single-tunnel solution than the scheme proposed in the RDR. A fall-back to the RDR HLRF Technology can be adopted should the R&D on KCS or DRFS not be considered successful."
Category: Director's Corner | Tagged: baseline configuration, DRFS, ILC baseline, KCS, main linac tunnel, single tunnel
Barry Barish | 9 December 2010Today, I will describe the first of those proposed change actions completed in recent weeks. [...] The proposal that I have approved sets the average operating gradient of 31.5 MV/m for operation of the main linac cryomodules, with a spread of up to 20 percent. We believe these parameters are realistic and achievable, but represent challenging goals.
Category: Director's Corner | Tagged: gradient, ILC baseline, main linac, operating gradient
Barry Barish | 4 November 2010One of our most visible and important ILC R&D short-term milestones has been to demonstrate production of ILC superconducting radio frequency cavities with gradient of greater than or equal to 35 megavolts per metre (MV/m) and Q0 = 8x10^9 and 50 percent production yield. [...] Today I announce the successful achievement of that important 2010 milestone.
Category: Director's Corner | Tagged: cavity gradient, milestone, quality factor