4

Material: mild steel

Operating pressure (mm Hg) 10^-5

Vacuum pumps: six 20-in. oil-diffusion pumps with 8-in. boosters:
one Beach-Russ 750-cfm; one Kinney 300-cfm; two
Kinney 105-cfm.

Pumping speed of oil-diffusion pumps (liters/sec) 20,000

_Magnet_

Core diameter (in.) 184
Pole-tip diameter (in.) 188.75
Pole gap at center (in.) 14
Magnetic field strength (gauss)
at center 23,400
at radius of 82.2 in., where n = 0.2 22,275
Weight of steel (tons) 4,000
Magnet coils Main coils Auxiliary coils
---------- ---------------
material solid copper hollow copper
(1/4 x 4 in.) (1-3/16 x 1-1/16 in.)
weight of copper (tons) 300 40
number of turns (total) 2,600 425
ampere turns 1.9 x 10^6 1.1 x 10^6
current (amp) 1600 2800
voltage (v) 550 560
power (kw) 900 1600
coolant oil water

_Radiofrequency system_

Dee system
number of dees 1
size
length (in.) 126
width (in.) 180
height (in.) 48
material: 1/64-in.-thick copper, stretched over a stainless
steel frame
dee aperture (in.) 4-3/16

Oscillator
type: self-excited grounded-grid 10
tube: one Machlett ML5681
dc input, operating condition (kw) 10
dee bias, maximum dc (v) 2000

Protons Deuterons Alpha particles
------- --------- ---------------
rf duty cycle (%) 38 28 28
dee-to-ground voltage,
peak (kv) 9 6 6

Frequency-modulation system
type: vibrating-reed (tuning-fork) capacitor
number of units: two (two blades each)
blades
size
width (in.)