The Lepton colliders Data Base M.E. Biagini, LNF-INFN Planning the construction of a collider means, once the energy range is chosen, to fix a goal value for the peak luminosity, and consequently choose a design strategy to reach that goal. In designing a storage ring the operational experience of similar machines is a valuable hint for what nature has allowed in that field. In this respect, a catalogue of characteristics and performances can be a very useful tool when designing new colliders or comparing operating machines performances.

Will very soon available on-line at: Published on: Will very soon available on-line at: http://www.lnf.infn.it/icfa/

Colliders in the DB (up to now) DAFNE (1.02), ADONE (0.6 to 3.1), Frascati National Laboratories, Italy VEPP-2000 (2.), Budker Institute, Novosibirsk, Russia BEPC (2. to 5.), BEPC-II (2. to 4.2), Institute of High Energy Physics, Beijing, China CESR (10.6), CESR-c (3. to 11.), Cornell University, Ithaca, US PEP-II (10.58), Stanford Linear Accelerator Centre, Menlo Park, US KEK-B (10.58), KEK, Tsukuba, Japan LEP-I (88. to 95.), LEP-II (161. to 209.), CERN, Geneva, Switzerland.

DB Structure Sheet 1: General and luminosity parameters. geometric and dynamical parameters. The luminosity data are the most important but also the most critical. A key point is that there should be consistency between peak luminosity, currents and tune shifts. This means that sometimes is not the maximum ever reached tune shift that has to be listed, but the one relative to the peak luminosity quoted. The same for the currents, since the maximum luminosity is often reached at currents lower than the maximum storable. Crossing angle, Piwinski angle, beam sizes in collisions and injection parameters are here. Sheet 2: Lattice parameters: magnetic layout, including fields and gradients, vacuum parameters, impedance and e-cloud instability observation. Sheet 3: Optics parameters: b, h, beam sizes, tunes, and the most important parameters, including bunch length, lifetimes and damping times. Sheet 4: RF related parameters: RF hardware and dynamics.

General Parameters

General Parameters (cont’d)

Lattice Parameters

Lattice Parameters (cont’d)

Optics Parameters

Optics Parameters (cont’d)

RF Parameters

RF Parameters (cont’d)

Future... The more efficient way to proceed is probably that for each collider, or each Laboratory, there is a person in charge of keeping the “dynamical” data updated. We also would like to encourage those designing new accelerators, or upgrading existing ones, to communicate the new data so that they can be included.

Many thanks to... D. Rice for CESR and CERC-c; Huang Nan, Jiuqing Wang for BEPC and BEPC-II; Y. Cai, M.H. Donald, M. Placidi, J.T. Seeman, M.K. Sullivan for PEP-II; Y. Funakoshi for KEK-B; A.A. Valishev for VEPP-2000; H. Burkhardt for LEP-1 and LEP-2; M.A. Preger for Adone; C. Biscari, S. Guiducci, M. Zobov for DAFNE.