Fermi National Accelerator Laboratory, Tevatron

900

1,800

Proton-antiproton

2 × 10³¹

1986 Illinois

Batavia

Stanford Linear Accelerator Center, SLC

45

90

Electron-positron

1 × 10³⁰

1989 California

Palo Alto

Cornell University, CESR

5

10

Electron-positron

4 × 10³²

1980 New York

Ithaca

CERN, LEP

91

182

Electron-positron

3 × 10³¹

1989 Switzerland

Geneva

KEK, Tristan^a

32

64

Electron-positron

1 × 10³¹

1986 Japan

Tsukuba

Institute of High

Energy Physics, BEPC

2

4

Electron-positron

6 × 10³⁰

1989 China

Beijing

Budker Institute of Nuclear Physics, VEPP-2M

0.7

1.4

Electron-positron

3 × 10³¹

1989 Russia

Novosibirsk

DESY, HERA

30 (electrons)

820 (protons)

310

Electron-proton

3 × 10³⁰

1991

Hamburg, Germany