OUT of DATE!!!
The IP parameters are calculated using the program lcopt, written by K. Yokoya, and verified with GuineaPig and analytic expressions. Parameters are listed for a repetition rate of 120 Hz.
Linac Parameters for the JLC / NLC (2/24/00)
500 GeV |
1 TeV |
|||||
A |
B |
C |
A |
B |
C |
|
CMS Energy (GeV) |
510 |
500 |
482 |
1022 |
1000 |
964 |
Luminosity (10**33) |
5.3 |
5.4 |
5.5 |
10.6 |
10.8 |
11 |
Repetition Rate (Hz) |
120 |
120 |
120 |
120 |
120 |
120 |
Bunch Charge (10**10) |
0.70 |
0.82 |
1.0 |
0.70 |
0.82 |
1.0 |
Bunches/RF Pulse |
95 |
95 |
95 |
95 |
95 |
95 |
Bunch Separation (ns) |
2.8 |
2.8 |
2.8 |
2.8 |
2.8 |
2.8 |
Structures |
||||||
Structure length (m) |
1.8025 |
1.8025 |
||||
Structure Iris (a/ l) |
0.18 |
0.18 |
||||
Fill Time (ns) |
104 |
104 |
||||
Attenuation |
0.475 |
0.475 |
||||
Eff. Shunt Imped. (Mohm/m) |
93.1 |
93.1 |
||||
Beam Shunt Imped. (Mohm/m) |
94 |
94 |
||||
Rf power per structure (MW) |
170 |
170 |
||||
Unloaded Grad. (MV/m) |
73.4 |
73.4 |
73.4 |
73.4 |
73.4 |
73.4 |
Multibunch loading (MV/m) |
7.53 |
8.82 |
10.76 |
7.53 |
8.82 |
10.76 |
Single Bunch loading (MV/m) |
0.3 |
0.4 |
0.5 |
0.3 |
0.4 |
0.5 |
Ave. Rf phase (deg.) |
10 |
10 |
10 |
10 |
10 |
10 |
RF Overhead (%) |
8 |
8 |
8 |
8 |
8 |
8 |
Eff. Gradient (MV/m) |
58.67 |
57.28 |
55.243 |
58.67 |
57.28 |
55.243 |
Pulse Comp. Method |
DLDS |
DLDS |
||||
Pulse Comp. units per sector |
9 |
9 |
||||
Sectors per linac |
11 |
22 |
||||
Structures per sector |
216 |
216 |
||||
Structures per linac |
2376 |
4752 |
||||
Active Linac length (km) |
4.283 |
8.56 |
||||
Filling factor |
86.5% |
86.5% |
||||
Total Linac length (km) |
4.95 |
9.9 |
||||
Klystrons |
||||||
Klystron peak power (MW) |
75 |
75 |
||||
Klystron pulse length (ns) |
3050 |
3050 |
||||
Klystrons per DLDS |
8 |
8 |
||||
Klystrons per linac |
792 |
1584 |
||||
Pulse Compression |
||||||
DLDS feeds |
8 |
8 |
||||
Structures per feed |
3 |
3 |
||||
DLDS power efficiency |
85% |
85% |
||||
Rf pulse length (ns) |
367.3 |
367.3 |
||||
Switching time (ns) |
14 |
14 |
||||
Rf group velocity in waveguide |
0.97c |
0.97c |
||||
Distance between feeds (m) |
56.268 |
56.268 |
||||
AC Power |
||||||
Rf power in structures (MW) |
35.61 |
71.21 |
||||
Modulator efficiency |
80% |
80% |
||||
Klystron efficiency |
57% |
57% |
||||
DLDS power efficiency |
85% |
85% |
||||
Rf switching efficiency |
96% |
96% |
||||
AC power (MW) |
95.7 |
191.3 | ||||