From the Director
Dear CHESS Community,
2018 has been an incredibly busy, exciting, and productive year for CHESS, filled with amazing scientific and technical accomplishments. In the first half of the year, CHESS operated at full speed, providing jam-packed schedule of user operations. In the second half of the year, we performed the implementation phase of the CHESS-U upgrade project. We began by demolishing the entire CHESS experimental floor and the portions of CESR contained in Wilson Labs (that is, the portions not in the tunnel). We then upgraded the electrical power and cooling infrastructure for the facility, upgraded the RF power infrastructure, and rebuilt CESR and the CHESS experimental floor.
This project is a stunning example of Cornell’s ability to perform major scientific development projects both swiftly and economically. The project was meticulously planned and the only slippage in the schedule was caused by unanticipated delays in obtaining building permits and an associated requirement to install additional fire and life safety upgrades. Nevertheless, all the infrastructure, accelerator systems, and personnel and equipment safety systems will be in place and we will begin injecting current into CESR on January 15, 2019.
We anticipate that CESR commissioning (minimum performance = 6.0Gev, 50mA and feedback operating) will take up to ten (10) weeks. Thus, on April 1
st we are planning to begin installing insertion devices (undulators) and commissioning x-ray beamlines. Each sector will take two to three weeks to commission and the various sectors will be commissioned sequentially. After commissioning, beamlines will be available for “commissioning projects” to developing experimental capabilities as the subsequent beamlines are being commissioned. These projects will be performed by expert users collaborating with CHESS scientists. Note that commissioning activities will almost certainly limit CESR currents, the amount of CESR operations, and, at times, access to the experimental floor.
Early in the first quarter of 2019, CHESS will publish preliminary descriptions of the new beamlines and indicate which are likely to be part of the national user facility and which will be operated for partners to guide users’ proposal development efforts.
CHESS will publish the expected capabilities of the new beamlines and issue a call for general user proposals as soon as our funding partners finalize their commitments and define their beamline access policies.
CHESS-U has transformed CHESS’s performance. We’re looking forward to the exciting science that will be performed here in the very near future.
Warmest wishes for a joyous holiday season and a happy new year.