Exhibit 99.1


              Ibis Technology to Participate in CIBC World Markets
                     Communications & Technology Conference

    DANVERS, Mass.--(BUSINESS WIRE)--June 1, 2004--Ibis Technology
Corporation (Nasdaq NM: IBIS), a leading provider of SIMOX-SOI
implantation equipment and SIMOX-SOI wafers to the worldwide
semiconductor industry, today announced the company's participation in
the CIBC World Markets Communications & Technology Food Chain
Conference in New York City.
    The CIBC Conference will take place on June 7-8 at The Plaza
Hotel. Ibis Technology is scheduled to present on Tuesday, June 8 at
9:45 a.m. Martin J. Reid, president and chief executive officer, and
William J. Schmidt, chief financial officer, will be presenting for
Ibis Technology.
    The CIBC World Markets Communications & Technology Food Chain
Conference will provide institutional investors with the valuable
insights of approximately 130 public companies in order to discover
the leading companies and sectors best poised to capitalize on the
industry's changes. Presenting companies will span the entire food
chain from communications services and components, hardware, and data
infrastructure to semiconductors, electronics capital equipment, flat
panel display and manufacturing services.
    Additional information about the conference is available on the
CIBC website at http://www.cibcwm.com/conferences/tech04/index.html.

    About Ibis Technology

    Ibis Technology Corporation is a leading provider of oxygen
implanters for the production of SIMOX-SOI
(Separation-by-Implantation-of-Oxygen Silicon-On-Insulator) wafers for
the worldwide semiconductor industry. The company is also a leading
producer of SIMOX-SOI wafers. Headquartered in Danvers, Massachusetts,
the company maintains an additional office in Aptos, California. Ibis
Technology is traded on the Nasdaq National Market under the symbol
IBIS. Information about Ibis Technology Corporation and SIMOX-SOI is
available on Ibis' web site at www.ibis.com.

    CONTACT: Company Contact:
             Ibis Technology Corporation
             William J. Schmidt, 978-777-4247
                 or
             IR Agency Contact:
             Bill Monigle Associates
             Bill Monigle, 603-424-1184