2017 May 17 - June 29
2017 October 11 - December 21
2017 Proposal deadline: 08/01/17
2017 BTR deadline: 09/10/17
There is an on-going major upgrade program for the Cornell High-Energy Synchrotron Source (CHESS) to boost the photon beam brilliance by an order of magnitude. In this project, dubbed CHESS-U, an 80 meter section of the Cornell Electron Storage Ring (CESR) will be replaced by 12 compact double-bend achromats (DBA’s) to lower electron beam emittance by a factor of three. The critical element in the achromat is a 2.3 meter long combined function (CF) dipole magnet which has a curved geometry. In this cost-effective and transversely compact design, the magnet has a “C-shape” core of dimensions 260 x 412 mm and tapered pole shape. This vertically focusing bending magnet will produce a nominal field of 0.651 T and a gradient of 9.365 T/m. This project is currently in the manufacturing phases and is scheduled to have first articles ready for testing by March 2017.
Figure 1: CHESS-U Double Bend Achromat.
Figure 2: CHESS-U Combined Function Magnet.
Figure 3: CHESS-U Quadrupole Magnet.
Figure 4: Quadrupole Magnet Coils.
Figure 5: CHESS-U Steering Magnets.
Figure 6: CHESS-U Girder Assembly.
Figure 7: CHESS-U quadrupole Being Machined on Horizontal Mill.
Figure 8: CHESS-U Combined Function Dipole Iron Being Prepared for Assembly.
Submitted by: Stephen Barrett, CLASSE, Cornell University