Performance
Internal Beams
| Protons | Deuterons | Alpha particles | Helium-3 ions | |
| Maximum energy (Mev) | 730 | 460 | 910 | 1140 |
| Energy spread (Mev) | 55 | |||
| Beam intensity | ||||
| Average current (μa) | 0.75 | 0.75 | 0.25 | |
| Peak current (μa) | 120 | 120 | 40 | |
| Beam radius, maximum (in.) | 82 | 82 | 82 | 82 |
| Time required for acceleration (msec) | 6 | 4.5 | 4.5 | |
| Number of revolutions during acceleration | 75,000 | 60,000 | 60,000 | |
| Distance traveled during acceleration (miles) | 450 | 360 | 360 | |
| Velocity at maximum energy (% of speed of light) | 82 | 60 | 60 | 69 |
| Mass increase at maximum energy (% of rest mass) | 75 | 25 | 25 | 40 |
| Range of full-energy particles (in. of aluminum) | 37 | 12 | 7 |
External Beams
| Physics cave | Meson cave | ||||||
| Protons | Neutrons | π+ | π+ | π- | |||
| Energy (Mev) | 730 | 310 | 100 | 250 | 100 | 300 | |
| Energy spread (Mev) | 14 | 10 | 20 | 10 | 30 | ||
| Beam area (cm2) | 25 | 40 | 100 | 100 | 100 | 100 | |
| Flux (particles/cm2-sec) | 2×1010 | 5×105 | 5×104 | 1000 | 100 | 1500 | 1000 |
Acceleration chamber (vacuum tank)
| Size | |
| length (ft) | 25 |
| width (ft) | 20 |
| height (ft) | 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 (1/4 × 4 in.) | hollow copper (1-3/16 × 1-1/16 in.) |
| weight of copper (tons) | 300 | 40 |
| number of turns (total) | 2,600 | 425 |
| ampere turns | 1.9 × 106 | 1.1 × 106 |
| 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.) | 45 |
| length (in.) | 32 |
| thickness: tapered from 1.4 to 0.06 in. | |
| weight (lb) | 500 |
| vibrational frequency (cps) | 64 |
| electrical capacitance (μμf) | 300 to 6,500 |
| peak-to-peak excursion (in.) | 1 |
| minimum separation of blade and stator (mils) | 50 |
| Protons | Deuterons | Alpha particles | |
| frequency sweep (Mc) | 36-18 | 18-13.5 | 18-13.5 |
Ion source: conventional open-arc type
Beam extractor
LeCouteur-type regenerator combined with magnetic channel
Building and facilities
| Room dimensions | |
| diameter (ft) | 160 |
| height (ft) | 90 |
| Crane | |
| type: radial | |
| capacity (tons) | 30 |
| overhead span (ft) | 77 |
| Concrete shielding: 15 ft thick on sides, 4 ft on top | |
History
| Design started: January 1940. |
| Construction started: August 1940. |
| First operation |
| for deuterons and alpha particles: November 1946. |
| for protons: December 1948. |
| Rebuilt: 1955-1957. |
Pub. No. 2d
5M
June 1964
