Machine
Parameters
of the KEKB (May 13 2005)
|
|
LER |
HER |
|
|
Horizontal Emittance |
18 |
24 |
nm |
|
Beam current |
1730 |
1261 |
mA |
|
Number of bunches |
1388 |
|
|
|
Bunch current |
1.25 |
0.909 |
mA |
|
Bunch spacing |
2.1 |
m |
|
|
Bunch trains |
1 |
|
|
|
Total RF volatage Vc |
8.0 |
15.0 |
MV |
|
Synchrotron tune |
-0.0249 |
-0.0226 |
|
|
Betatron tune |
45.505/43.535 |
44.511/41.577 |
|
|
beta's at IP |
59/0.65 |
56/0.62 |
cm |
|
Estimated vertical beam size at IP |
2.1 |
2.1 |
mm |
|
beam-beam parameters
|
0.110/0.092 |
0.073/0.056 |
|
|
Beam lifetime |
140@1700 |
179@1261 |
min.@mA |
|
Luminosity (Belle CsI) |
15.62 |
1033/cm2/sec |
|
|
Luminosity records*) per day / 7days/ 30days |
1.178/7.358/29.02 |
/fb |
|
*) as of May 13 2005