proton beam aperture
Date: 2001
Inventory Number: 2002-1-0030a
Classification: Aperture
Maker: Elliot Hammerman
Cultural Region:
City of Use:
Dimensions:
27.9 lb. (12.7 kg)
Overall - Storage: 19 x 19 x 4.4 cm (7 1/2 x 7 1/2 x 1 3/4 in.)
the instrument: 19 x 19 x 19 x 4.4 cm (7 1/2 x 7 1/2 x 7 1/2 x 1 3/4 in.)
Material:
Description:
The brass aperture has an irregular hole drilled through the center. Holes are drilled on the faces in order to mate the aperture with the range compensator (2002-1-0030b).
Along the side, it is marked in purple ink, "PA1/ WED 12/12" (twice). A green circular sticker is scotch-taped to the side with the label, "Alt / 10/21/01." There is also a cross.
On the front face, there is an obliterated inscription and the engraved markings, "PA1 T[hole]P WED 12 FA." PA1 stands for Posterior Anterior One.
Along the side, it is marked in purple ink, "PA1/ WED 12/12" (twice). A green circular sticker is scotch-taped to the side with the label, "Alt / 10/21/01." There is also a cross.
On the front face, there is an obliterated inscription and the engraved markings, "PA1 T[hole]P WED 12 FA." PA1 stands for Posterior Anterior One.
In Collection(s)
Signedunsigned
FunctionA brass aperture was used to shape the transverse cross-section of the proton beam used to treat a tumor or other tissue in a medical patient.
Historical AttributesThis aperture was used to treat a tumor in a patient at the Harvard Cyclotron Laboratory in 2001.