The new collector for the electron cooling device at LEAR

An important aspect of the low-energy physics programme at LEAR is the use of electron cooling for phase-space compression of the circulating ion beam [1–3]. In order to improve the reliability of the cooling device, a new electron beam collector has been developed in a collaboration between CERN and CAPT (Centre of Applied Physics and Technology) Lipetsk. The collector is designed to recuperate 3.3 A of 35 keV electrons with an efficiency better than 99.99%. It was constructed at the INP (Institute of Nuclear Physics) Novosibirsk workshop in accordance with a design produced by CAPT and the electron cooling team at CERN. The vacuum and electrical test of the collector were performed at Lipetsk. The device is now installed at LEAR and has undergone first reception tests in the machine.