POWER OF ATTORNEY
For Executing Reports under Section 16(a)
with respect to securities of
AXCELIS TECHNOLOGIES INC.
	The undersigned hereby constitutes and appoints each of Mary G. Puma, Lynnette C.
Fallon, Matthew C. Dallett and Stanley Keller, each acting singly, the undersigned's true and
lawful attorney-in-fact, from the date hereof until this Power of Attorney is revoked, to:
(1)	execute, for and on behalf of the undersigned, Forms 3, 4 and 5 with respect to securities
of Axcelis Technologies, Inc. in accordance with Section 16(a) of the Securities Exchange
Act of 1934 and the rules thereunder, it being understood that the documents executed
by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney
shall be in such form and shall contain such terms and conditions as such attorney-in-fact
may approve in his or her discretion; and
(2)	do and perform any and all acts, for and on behalf of the undersigned, that may be
necessary or desirable to complete the execution of any such Form 3, 4 or 5 and the
timely filing of such form with the United States Securities and Exchange Commission
and any other authority.
	The undersigned hereby grants to each such attorney-in-fact full power and authority to
do and perform all and every act and thing whatsoever requisite, necessary and proper to be done
in the exercise of any of the rights and powers herein granted, as fully for all intents and purposes
as the undersigned might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or his or her substitute
or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the foregoing attorneys-
in-fact, in serving in such capacity at the request of the undersigned, are not assuming any of the
undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.
	IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed this 2nd day of February, 2011.



						/s/Edward H. Braun___________________
						Edward H. Braun