RF Voltage Total RF voltage of 7.52MV gives bunch length of 7mm
Tune scan
Tune scan horizontal ( ps ), vertical ( ps ) and (initialization)
with Qz=-0.07
Dynamic aperture
The dynamic aperture gif ( ps )
and (initialization) .Qx=14.54 Qy=9.61,Qz=-0.07.
The horizontal and vertical tunes are
shifted in order to avoid the synchrobetatron line that shifts with the lower synchrotron tune. (See tune scans)
Dynamic aperture is computed for fractional energy offset of 0%, 0.5% and 1%. Tracking is based on symplectic integration through the same wiggler map as for CESR-c calculations. Particles are considered lost if their amplitude >> the real physical aperture. (This seems to be the way linear collider damping ring people report dynamic aperture.) The smooth yellow curve corresponds to 3sigma, where sigma is the rms size of the "injected" beam, which is again the custom of damping ring afficiondos. The horizontal emittance of the injected beam is assumed to be 1000nm, and fully coupled so that the vertical emittance is half the horizontal (500nm), just like for the real ILC damping rings. (I believe this is also Jeremy's custom.) And that is real physical emittance, not normalized.
Lattice parameters computed by analyzer
/a/lnx113/nfs/acc/user/dlr/bmad/lat/des/CesrTF/ctf_20070620/ctf_20070620.lat
e+ orbit at start (mm/mr) Element: IP_L0 -0.0109 0.0033 0.0000 0.0000 0.0000 0.0000
e+ closed orbit (mm/mr) at end, Element: IP_L0_END -0.0109 0.0033 0.0000 0.0000 0.0000 0.0000
e- closed orbit (mm/mr) at end, Element: IP_L0_END -0.0109 0.0033 0.0000 0.0000 0.0000 0.0000
Horizontal Vertical Longitudinal
Fractional Tune 0.5700 0.6200 -0.0700
Beta* 5.1255 6.7223
Alpha* -0.0006 -0.0023
Eta* -0.0023 0.0000
Etap* 0.0001 0.0000
Full turn Phase 91.5458 60.4443
dBeta*/dE 6.8937 97.7807
Chromaticity -2.9787 -0.5057
sqrt(<(dB/dE)^2>) 335.2653 307.2801
cbar 0.0000 0.0000
0.0000 0.0000
dcbar*/dE 0.0000 0.0000
0.0000 0.0000
Sextupole detuning rates
Alpha_ax = -0.1192E+05
Alpha_ay = 0.9848E+03
Alpha_yy = -0.3021E+04
Qs-2Qx
A_m = -0.2267E+02 B_m = -0.1546E+02 |A_m + B_m| = 0.2745E+02
horizontal emittance = 0.2302E-08 vertical emittance = 0.9424E-45
Energy spread = 0.8098E-03 Bunch length = 0.8967E-02
Revolution 0.3901E+06
Horiz damping time = 0.5643E-01
Vert damping time = 0.5635E-01
Long damping time = 0.2818E-01
i1 = 0.4841E+01 alpha_p = 0.6300E-02
i2 = 0.8069E+00
i3 = 0.1800E+00
i4 = 0.7058E-03
i5a = 0.3155E-03
Synchro-betatron sext growth rate at 0.5+Qs/ 0.8764E+04 0.9229E+04
Synchro-betatron quad growth rate at 0.5+Qs/ 0.2896E+04 0.1325E+05
Synchro-betatron tot growth rate at 0.5+Qs/2 0.9503E+04 0.2032E+05
(6d orbit amp- 4d orbit amp)/6 -0.3541E-09 -0.2369E-09
(d(amp)/d(volt)) x y -0.3548E-09 -0.2375E-09