The IP parameters are calculated using the program lcopt, written by K. Yokoya, and verified with GuineaPig and analytic expressions. Parameters are listed for repetition rates of 120 Hz. The luminosity values have roughly 5% dilution to account for beam jitter and IP tuning.
The present parameters were derived at the 11/2001 ISG meeting at KEK. These parameters have been used for the TRC comparison and the USLCTOS study. The parameters are also described in the NLC configurations documents. The 2003 configuration is located at: http://www-project.slac.stanford.edu/lc/local/documentation/2003_Doc.htm
| High Energy IP Parameters | ||||
| Stage 1 | Stage 2 | |||
| CMS Energy (GeV) | 500 | 1000 | ||
| Site | US | Japan | US | Japan |
| Luminosity (1033) | 20 | 25 | 30 | 25 |
| Repetition Rate (Hz) | 120 | 150 | 120 | 100 |
| Bunch Charge (1010) | 0.75 | 0.75 | ||
| Bunches/RF Pulse | 192 | 192 | ||
| Bunch Separation (ns) | 1.4 | 1.4 | ||
| Loaded Gradient (MV/m) | 50 | 50 | ||
| Injected gex / gey (10-8) | 300 / 2 | 300 / 2 | ||
| gex at IP (10-8 m-rad) | 360 | 360 | ||
| gey at IP (10-8 m-rad) | 4 | 4 | ||
| bx / by at IP (mm) | 8 / 0.11 | 13 / 0.11 | ||
| sx / sy at IP (nm) | 243 / 3.0 | 219 / 2.1 | ||
| qx / qy at IP (nm) | 32 / 28 | 17 / 20 | ||
| sz at IP (um) | 110 | 110 | ||
| Uave | 0.14 | 0.29 | ||
| Pinch Enhancement | 1.51 | 1.47 | ||
| Beamstrahlung dB (%) | 5.4 | 8.9 | ||
| Photons per e+/e- | 1.3 | 1.3 | ||
| Two Linac Length (km) | 14 | 28 | ||
Low energy IP parameters from 2003 configuration document.
Created: 07/03/98 by Tor Raubenheimer Modified: 05/06/04 by Tor Raubenheimer