collimating apertures
Inventory Number2025-04-0011s
Classification(not assigned)
Maker
Harvard Cyclotron Laboratory
1937 - 2002
User
Francis H. Burr Proton Therapy Center, Massachusetts General Hospital
founded 2001
User
Ethan W. Cascio
born 1960
DescriptionMetal discs with holes of different sizes.
From Ethan Cascio, the Radiation Effects Test Program Manager at The Francis H. Burr Proton Therapy Center at Massachusetts General Hospital: These are "various collimating apertures (we had LOADS of these in different size etc.)"
From Ethan Cascio, the Radiation Effects Test Program Manager at The Francis H. Burr Proton Therapy Center at Massachusetts General Hospital: These are "various collimating apertures (we had LOADS of these in different size etc.)"
ProvenanceHarvard Cyclotron Laboratory, Cambridge, MA, 1960s-2002; The Francis H. Burr Proton Therapy Center at Massachusetts General Hospital, Boston, 2002-2021; transfer to CHSI, 2021.
Harvard Cyclotron Laboratory
Date: 1947-2002
Object number: 2003-1-0291
William A. Baker
Date: after 1979
Object number: 1998-1-0980
J. Duboscq-Soleil
Date: 1850
Object number: 2008-1-0098
Harvard Cyclotron Laboratory
Object number: 2025-04-0011r
American
Date: 1875-1925
Object number: 1998-1-0466
Harvard College Observatory
Date: circa 1931
Object number: 1996-1-0539
Reynolds Metal Company
Date: circa 1944
Accessories: see Description for itemized list
Object number: 1997-1-0796a