SiGe BiCMOS for Liquid Argon Front End Electronics May 4, 2007 Mitch Newcomer, Sergio Rescia

LAr Signal Processing for SLHC It’s likely that front end boards for LAr will need to be redesigned to meet radiation tolerance, rate and shaping requirements for SLHC. SiGe bipolar is being explored for the inner detector offers a potentially ideal technology for a next generation front end. Low rb  good noise performance Hi Gm/Ic  best current gain vs power technology. Mixture of bipolar with CMOS  excellent for analog design Lateral PNP’s ?? Possibly rad hard enough for LAr. 3 May 2007 LAr Upgrade work FY08

LAr Upgrade FEB baseline design 3 May 2007 LAr Upgrade work FY08

FY07 - 08 Objectives Design work First Round : Prototype run: Finish qualifying round of Radiation Studies with SCT. Study radiation effects on matching, noise on selected technology. Design work First Round : Building Blocks: current sources / references… Preamp topologies Shaper block Input protection Prototype run: Shared IBM run with SCT (8WL thru MOSIS $90K) IHP?? 3 May 2007 LAr Upgrade work FY08

BNL Finish 8WL irradiation Help develop noise testing program Examine/develop Preamp topologies and associated test structures. Organize prototype run 3 May 2007 LAr Upgrade work FY08

Preliminary work on Preamp 3 May 2007 LAr Upgrade work FY08

Spice Simulations 3 May 2007 LAr Upgrade work FY08

Preamp Linearity Optimization 3 May 2007 LAr Upgrade work FY08

BNL manpower Analog Design SiGe Device Measurement Sergio Rescia (EE) - 35% JF Pratte (EE) - 25% SiGe Device Measurement R. Hackenberg - 20% (Meas. Firm/soft ware) J. Kierstead - 10% ( Gamma irradiation) S. Rescia - 15% ( Measurement/ Org.) Technician - 20% 3 May 2007 LAr Upgrade work FY08

Penn Investigate Noise in SiGe Bipolar Devices with BNL. Understand / Design input protection structures. Study/design SiGe BiCMOS Shaping Blocks. Facilitate front end Preamp Design. Measure fabricated devices. 3 May 2007 LAr Upgrade work FY08

Shaper Design Work Reduce Power 3 May 2007 LAr Upgrade work FY08

SiGe Resources People Mitch Newcomer 25 % Nandor Dressnandt 20 % Student (EE) 50 % Travel $3K 3 May 2007 LAr Upgrade work FY08

Nevis Setting up a device measurement facility to participate in radiation testing program. Postdoc arrives in May: will get started with visit to Penn to go over parametric testing. Tasks: Proton exposure at Mass General. Measure devices pre/post rad … 3 May 2007 LAr Upgrade work FY08

FY08 Preliminary Budget 3 May 2007 LAr Upgrade work FY08