Solid State Tracking Summary Talk Convenors Marina Artuso

Solid State Tracking Summary Talk Convenors: Marina Artuso and Carl Haber

Introduction • • • Intent was to focus on the three PRD’s identified in the BRN PRD 18: High spatial resolution per-pixel fast timing (~10 ps) timing PRD 19: New materials and processes PRD 20: Low mass scalable components and tracking systems We invited talks based upon a review of the Snowmass LOI and the BRN We reviewed and selected contributed abstracts We convened a special panel of 6 invited experts on electronics for fast timing 17 presentations (PRD 18: 10, PRD 19: 5, PRD 20: 6; note 2 talks fell in all 3 areas) A number of presentations benefited from SBIR and collaboration with industry

PRD 18 Speaker AC-LGAD Bench Beam Seiden X X Apresyan X X X X Jadhav D’Amen X Seidel Radiation Electronics New ideas X X X X Mazza X Schumm X X

From LGAD to AC-LGAD To go from LGAD (Low Gain Avalanche Detector) on the left to AC-LGAD on the right have to remove physical pixelization of LGAD: • Make n++-implant at the junction more resistive and extend it as a continuous sheet over the gain layer across the entire sensor. • Add dielectric layer for isolation and AC-coupling into readout pads, which are connected to the electronics. Results in 100% fill factor. • Simplification of design and production (no p-stop, JTE, inter-pad gap). Seiden Result: • Can use sparse readout with pulse sharing between ~ 4 pads for precision spatial resolution. Sparse metallization results in lower capacitance, and lowered power by limiting channel count. The signal (defined by peak height) summed over the pads is very close to constant independent of hit location and can be made large because of the LGAD gain. 4

Apresyan

D’Amen

Seidel

Mazza

Schumm

Panel on Electronics for Fast Timing Author Title/Subject Comments Dragone Fast Timing Circuits at SLAC ALTIROC + related projects De La Taille OMEGA Timing Chips Survey of ROC developments Stauffer-Ewing Optimizing Si. Ge HBT front end amplifiers for LGAD R/O Anadyne collab with SCIPP Mostafanezhad Nalu Scientific – Waveform digitization Cartiglia Discussion of goals from the sensor perspective Waveform sampling Liu ETROC: ETL Read. Out Chip for CMS MTD Hierarchical design

The grand challenge: the “ 1 mm - 10 ps” project Samples 1 2 Reconstruction N. Cartiglia, INFN Torino, CPAD Panel 3 4 code (1) (2) AC-LGAD sensor: Multiple sampling frontend Each pad sees a deformed copy ==> only way to reach the of the initial signal. ultimate precision of AC-LGAD These variations can be used to our advantage Positio n Time (3) 12

PRD 19

Plus integration with thin film electronics and interconnections Metcalfe

First results presented at CPAD 2019 Hedges

Knights

PRD 20

Li

Berry

CPAD 21: CPAD Instrumentation Frontier Workshop 2021 Composites Manufacturing & Simulation Center • Design, Modeling, and Simulation Technology Area for IACMI: The Composites Institute • A team of faculty, engineering staff, post-doctoral researchers, graduate students, and undergraduates • 35, 000 sq. ft. of office and laboratory space for composite fabrication, mechanical testing, chemo-rheology

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