Skip to main content
Advanced Search
Image Not Available for masking aperture
masking aperture
Image Not Available for masking aperture

masking aperture

Inventory Number2025-04-0017b
Classification(not assigned)
UserMade by Harvard Cyclotron Laboratory 1937 - 2002
UserMade by Massachusetts General Hospital 1811-present
DescriptionFaraday cup (a): large green metal box, counts protons by counting charge coming off the beam
Masking aperture (b): metal wedge; counts protons over square cm
ProvenanceBuilt at the Harvard Cyclotron Laboratory (HCL) 1987; transferred by Ethan Cascio to Massachusetts General Hospital (MGH) in 2002; deposited at CHSI 2/26/2025
Image Not Available for Faraday cup
Faraday cup
Harvard Cyclotron Laboratory
Object number: 2025-04-0017a
control console from Harvard Cyclotron Laboratory
control console from Harvard Cyclotron Laboratory
Harvard Cyclotron Laboratory
Date: 1947-2002
Object number: 2003-1-0291
octagonal ivory diptych sundial
octagonal ivory diptych sundial
French
Date: 1624
Object number: 7841
Harvard Project Physics scaler
Harvard Project Physics scaler
Damon Engineering, Inc.
Date: 1962-1972
Object number: 2006-1-0086
steel dividers and calipers with various attachments
steel dividers and calipers with various attachments
German
Date: circa 1550
Accessories: 3/16 in. drill bit secured to one arm and one pivoted brace
Object number: DW0728
digital millisecond timer
digital millisecond timer
Ralph Gerbrands Company
Date: circa 1950
Accessories: round-base attachment Gray power cord Pair of green wires
Object number: WJ1058
Image Not Available for collimating apertures
collimating apertures
Harvard Cyclotron Laboratory
Object number: 2025-04-0011s
Image Not Available for current integrator
current integrator
Harvard Cyclotron Laboratory
Object number: 2025-04-0014
Image Not Available for precision lead absorber/scatterer set
precision lead absorber/scatterer set
Harvard Cyclotron Laboratory
Object number: 2025-04-0015
Harvard cyclotron bulletin board
Harvard cyclotron bulletin board
Harvard Cyclotron Laboratory
Date: 1960-1980
Object number: 2003-1-0309
powers of 10 poster
powers of 10 poster
Lucia Eames
Date: 1997
Object number: 1998-1-1138
Image Not Available for frequency meter
frequency meter
Harvard Cyclotron Laboratory
Object number: 2025-04-0008