Work in progress ..Work in progress ..

Beam tracking with SAD through ATF combined optics: extraction line and proposed KEK final focus

Three tracking routines (good agreement)

Mauro Pivi, Okugi-san, Andrei Seryi

DX

(m

)

BXBY

1/

2 (m

)

SAD: Combined extraction line and final focusSAD: Combined extraction line and final focus

Beam tracking with SADBeam tracking with SAD

Not yet combined: only final focus

As expected

Beam tracking with SADBeam tracking with SAD

All line combined: extraction + final focus

DP (%) sigx (m) sigy (m) sigx/sigx0 sigy/sigy 0.0 3.8504E-06 34.615E-09 1.00 1.000.1 4.8265E-06 41.496E-09 1.25 1.190.15 1.7741E-05 63.499E-09 4.6 1.80.2 9.1840E-05 1.0823E-07 24.1 3.17

Is real effect ? Need to re-check combined optics ?!

MADMAD

Bandwidth at “IP”: BX and BY vs energy spread DP

SADSAD