V. Tocut, LAL/IN2P3 Orsay H. Lebbolo LPNHE/IN2P3 Paris 1 LPNHE PId Front End Chip: PIF V. Tocut, LAL/IN2P3 Orsay H. Lebbolo LPNHE/IN2P3 Paris

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 Requirement reminder Time measurement : 100ps resolution max 1MHz background rate max 50ns double pulse resolution min Charge measurement : (PM monitoring & barycentre) necessary ? yes dynamic range ? ~10 to 20 fine or coarse ? 8 bit dedicated runs ? always H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 Charge Measurement Charge measurements will improve the resolution H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

Proposal #1: Babar like  ‘CFD’ like *16 Charge measurement To ADC IN Low walk discriminator To TDC H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 Proposal #1: In00 Charge Amplifier Sample & Hold Mux Charge output (To ADC) Synchronization with TDC data State Machine Pseudo CFD To TDC H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 CFD Integration Fast comparator  Fast comparator Classical CFD Proposed pseudo CFD Delay + Fraction  Gain + Integrators H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 Spice Simulations H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

Prop. #1: Babar like (cfd) +++ No walk correction if walk < 50ps (depending on PM dynamics) Charge measurement to improve resolution --- Need « Time + charge » data synchronization No PM waveform signal monitoring 2 different chips developed: analog front end -> {PIF }: CFD like and charge measurement  time measurement -> {SCATS} H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

Prop. #2: charge + waveform *16 Charge measurement MUX + S/H To ADC Fast Amplifier IN 16 Low walk discriminator To TDC No waveform monitoring needed !! H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

Proposal #3: Time over Threshold (TOT) SCATS To FPGA IN 8 16 ∆t = f(Q) TOT not enough accurate H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010

H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010 Milestones PIF the Chip : first simulations with CMOS Ams 0.35µ or CMOS XFAB 0.18µm (NDA just signed) H. Lebbolo – V. Tocut, SuperB Workshop, Frascati 09/2010