ILC Beam parameters including 250 GeV ILC

Source: Obtained from Andrei Seryi, 11 March 2008.

Reference: Presentation at TILC08 by Andrei Seri,
http://ilcagenda.linearcollider.org/contributionDisplay.py?contribId=113&sessionId=9&confId=2432
 

  Calib.90 Nom.200 Nom.250 Nom.350 Nominal Upgr.1TeV
Ecms [GeV] 90 200 250 350 500 1000
N 2.0E+10 2.0E+10 2.0E+10 2.0E+10 2.0E+10 2.0E+10
nb 2625 2625 2625 2625 2625 2625
Tsep [ns] 369.2 369.2 369.2 369.2 369.2 369.2
Iave in train [A] 0.0087 0.0087 0.0087 0.0087 0.0087 0.0087
f 2.5 5 5 5 5 4
Electron polarization, % N/A 80 80 80 80 80
Positron polarization, % N/A N/A N/A N/A N/A N/A
Electron E-spread, %(note1) 0.70 0.35 0.28(note2)
0.20 0.14 0.14
Positron E-spread, %(note1) 0.50 0.25 0.18(note2) 0.10 0.07 0.07
IP Parameters            
bx 7.5E-02 2.6E-02 2.2E-02 2.0E-02 2.0E-02 3.0E-02
by 2.0E-03 6.0E-04 5.0E-04 4.0E-04 4.0E-04 3.0E-04
sigx_effective 3.3E-06 1.2E-06 9.5E-07 7.6E-07 6.4E-07 5.5E-07
sigy_effective 3.5E-08 1.3E-08 1.0E-08 7.4E-09 5.7E-09 3.3E-09
gamepsX effective 1.3E-05 1.0E-05 1.0E-05 1.0E-05 1.0E-05 1.0E-05
gamepsY effective 5.4E-08 5.6E-08 5.3E-08 4.7E-08 4.0E-08 3.6E-08
L* [m] 3.5 3.5 3.5 3.5 3.5 3.5
BDS Inc. t-t jitter, sigma 0.5 0.5 0.5 0.5 0.5 0.5
BDS Inc. b-b jitter, sigma 0.1 0.1 0.1 0.1 0.1 0.1
sigz 3.0E-04 3.0E-04 3.0E-04 3.0E-04 3.0E-04 3.0E-04
Dx 0.03 0.13 0.15 0.17 0.17 0.11
Dy 3.3 11.4 14.0 17.5 19.1 18.9
Uave 0.002 0.010 0.016 0.027 0.047 0.109
delta_B 0.0002 0.003 0.006 0.012 0.023 0.050
P_Beamstrahlung [W] 1.9E+02 1.4E+04 3.2E+04 9.0E+04 2.4E+05 8.4E+05
ngamma 0.26 0.74 0.89 1.09 1.29 1.43
Hd 1.9E+00 1.8E+00 1.7E+00 1.7E+00 1.7E+00 1.5E+00
Geo Lum 1.8E+36 2.8E+37 4.2E+37 7.4E+37 1.1E+38 1.8E+38
Lum. (m-2 s-1) 3.3E+36 4.7E+37 7.1E+37 1.2E+38 1.9E+38 2.8E+38

 

(note:1) Energy spread is "RMS energ spread"


(note:2) Energy spread of 250GeV is decided from the following figure, which plot
  the energy dependance of the enrgy spread.  Lines are smooth curves
  drawn by excel.