(19)

(11)

EP 2 203 928 A1

(12)

(43) Date of publication: 07.07.2010 Bulletin 2010/27 (21) Application number: 08842593.9 (22) Date of filing: 22.10.2008

(51) International Patent Classification (IPC):  H01J 37/08(2006.01) (86) International application number: PCT/US2008/012008 (87) International publication number: WO 2009/054966 (30.04.2009 Gazette 2009/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 22.10.2007 US 981576 P (71) Applicant: Axcelis Technologies, Inc. Beverly, MA 01915 (US)	(72) Inventor: DIVERGILIO, William Brookline Massachusetts 02446 (US) (74) Representative: Treeby, Philip David William et al R.G.C. Jenkins & Co 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)