21st "Trento" Workshop on Advanced Silicon Radiation Detectors

Session

3D Detectors

17 Feb 2026, 15:50

Sala dei Notari (Palazzo dei Priori, Perugia, Italy)

Conveners

3D Detectors

• Gian-Franco Dalla Betta (INFN and University of Trento)

138. Control of the 3D FBK sensors leakage currents during pixel detector construction

Lucrezia Boccardo (INFN e Universita Genova (IT))

17/02/2026, 15:50

3D Sensors

Oral

For the High Luminosity upgrade of the Large Hadron Collider, the current ATLAS Inner Detector will be replaced by an all-silicon Inner Tracker (ITk). The installation is foreseen during the next LHC Long Shut Down 3 (2026-2030). The new tracker has been designed to face the challenging environment associated with the high number of collisions per bunch crossing and the expected large...

118. The 3D pixel tracker of the CMS Precision Proton Spectrometer in Run 3

Anna Gianatti (INFN e Universita Genova (IT))

17/02/2026, 16:10

3D Sensors

Oral

The CMS Precision Proton Spectrometer (PPS) was designed for measuring protons that escape along the LHC beam line after the interaction in CMS. It successfully took data during the LHC Run 2, collecting more than 110 fb-1 of integrated luminosity, and since 2022 is taking data in Run 3, having already collected more than 230 fb-1. The PPS tracker was substantially upgraded in preparation for...

177. Photon detection using 3D sensors with geometrical gain: The OPTIME 3D silicon sensor

Angelo Loi

17/02/2026, 16:30

3D Sensors

Oral

Within the INFN OPTIME project, we present the latest characterization results of a novel 3D silicon sensor developed as a core component of a multistage photo-detector system for fast timing with resolutions below the ps threshold. The presented device is based on FBK double-sided 3D silicon technology and is optimized for low-energy electrons and photon detection. Extensive electrical and...

108. 3D pixel sensors for the CMS Phase-2 Inner Tracker: a 10-years journey

Davide Zuolo (University of Colorado - Boulder (US))

17/02/2026, 16:50

3D Sensors

Oral

10 years ago the journey of 3D sensors in CMS began with a test beam at the Fermilab Test Beam Facility. The first FBK prototype sensors featuring pixel cells with 100 x 150 $\mu m^2$, same as the current CMS pixel detector, were bump bonded to the PSI46digv2 readout chip and measured on beam. Performance well beyond the best expectations were observed and paved the way to the development of...

130. Small cell 3D detectors with intrinsic gain

Marko Puklavec (Jozef Stefan Institute (SI))

17/02/2026, 17:10

3D Sensors

Oral

Small pixel 3D sensors were produced by IME-CAS on 8-inch p-type wafers of 700 Ωcm. The 30 μm thick silicon detectors have trench walls (ohmic p+) and very narrow n-column columns with a diameter of only 0.5 μm. A 5 × 5 matrix of 35 ×35 μm2 was measured with Two Photon Absorption Transient Current Technique as well as with minimum ionizing electrons from 90Sr source. At higher voltages the...