About Us

Commissioned in 2002, G-line is the newest experimental area at the CHESS facility, consisting of three independent x-ray stations fed by a single, 49-pole wiggler located in the CESR tunnel.  The high intensity x-ray beam form this wiggler is used by a wide variety of research groups form Cornell University and around the world to study the structure and behavior of matter at the atomic scale.

G-line's two-fold mission is to serve both as a lightning rod for new research directions and a training ground for future leaders in synchrotron-based research.  It explicitly brings together CHESS's strong tradition of synchrotron science and applications development with the Cornell Center for Materials Research (CCMR).

The ~2/m/rad fan of radiation from the CHESS West wiggler is about 50 mm wide by the time it reaches G-cave, where it is split into two components by a pair of synthetic multilayer monochromators.  The southern 25 mm of beam is deflected upwards and eventually becomes the G1 beam.  The northern half is deflected downwards and then guided through a lead-shielded pass-through pipe in G1.  Upon reaching G2 cave, a narrow bandpass transmission crystalline monochromator deflects a small portion of the beam into G2, while the undeflected beam proceeds to G3.

More G-line information.

Last Update: 2006-09-21