POWER OF ATTORNEY



Know all by these presents, that the undersigned hereby constitutes and appoints each of Kenneth

J. Galaznik and John B. De Luca signing singly, the undersigned's true and lawful attorney-in-

fact to:



(1) execute for and on behalf of the undersigned, in the undersigned's capacity as an

officer and/or director of American Science and Engineering, Inc. (the

"Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities

Exchange Act of 1934 and the rules promulgated thereunder;



(2) do and perform any and all acts for and on behalf of the undersigned which may

be necessary or desirable to complete and execute any such Form 3, 4 or 5 and

timely file such form with the United States Securities and Exchange

Commission and any stock exchange or similar authority; and



(3) take any other action of any type whatsoever in connection with the foregoing

which, in the opinion of such attorney-in-fact, may be of benefit to, in the best

interest of, or legally required by, the undersigned, 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 such attorney-in-fact's

discretion.



The undersigned hereby grants to each such attorney-in-fact full power and authority to do and

perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the

exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the

undersigned might or could do if personally present, with full power of substitution or revocation,

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, nor is the

Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the

Securities Exchange Act of 1934.



This Power of Attorney shall remain in full force and effect until the undersigned is no longer

required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in

securities issued by the Company, unless earlier revoked by the undersigned in a signed writing

delivered to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as

of this 6th day of September, 2012.





      /s/ Ernest J. Moniz