M Sullivan SuperB Workshop Elba, Italy May 31 - Jun 3, 2008 Machine – Detector M Sullivan SuperB Workshop Elba, Italy May 31 - Jun 3, 2008

New IR design with BaBar

New IR design with luminosity gammas

New IR design with BaBar

New IR design with BaBar BSC envelopes are 15 sigma + 1 mm

Radiative Bhabhas

Engineering questions Transition space from warm bore to cold bore – how much z space is needed Magic flange location (CESR and KEK have done it) Bellows location to relieve stress on detector Be beam pipe Magnet supports Vacuum supports Where can we put pumping? Compensating solenoids Cryostat size Warm bore for the other IR magnets

Detector beam pipe No doubt Be Double layer How thick? The closer to the beam the more cooling we need Most likely need Au coating on inside Thickness TBD Cooling fluid (gas does not cool enough)

MDI Superconducting cryostats Mounted on the detector Connected by magic flange in front of QD0 Probably need to open up forward doors beam aperture How to install a cryostat inside the DIRC tunnel Shielding inside the detector? – PEP-II had 20 cm of Fe Vibration control Fast dither experience at PEP-II very helpful Being mounted to the detector should also help

MDI (2) Services to cryostats Easily removed shielding How to quick disconnect cryostats Rails designed in at the beginning ($) Easily removed shielding SVT cabling and services…How is this done with a magic flange design? Small angle calorimeter? …..

Extra slides

CDR design

Beam parameters used Parameter HER LER Energy (GeV) 7 4 Current (A) 1.44 2.50 Beta X (mm) 20 35 Beta Y (mm) 0.2 0.2 Emittance X (nm-rad) 0.8 2 Emittance Y (pm-rad) 1.4 3.5 Sigma X (m) 7 4 Sigma Y (nm) 30 20

Magnet parameters Quad G (k/m) L(m) from IP (m) QD0 -1633 0.25 0.40 QD0H -1207 0.20 0.75 QF1L 374 0.50 0.90 QF1H 399 0.70 1.15 Dipole B (kG) L(m) from IP (m) B1L -0.77 5.4 10.25 B1H -1.35 5.4 10.25