Speaker
Description
In the dynamic realm of silicon detector advancements, the pursuit of consistently improved timing precision has witnessed remarkable progress in recent years. Yet, the challenge remains to unlock the full potential for realizing large-area systems, showcasing the extraordinary time resolution demanded by next-generation experiments.
In the context of the future ALICE 3 experiment (2035, LHC at CERN), an intensive R&D program is actively addressing the challenge of finding a 20-picosecond technology for the Time-Of-Flight detector. Various silicon-based devices are currently under evaluation. This presentation provides an overview of the ongoing R&D efforts focused on a key technology: Low Gain Avalanche Detectors (LGADs).
In light of their impressive timing performance, LGADs are earmarked for numerous detector upgrades. However, the ambitious requirements of ALICE 3, coupled with the fact that these studies could have a significant impact on various future scenarios, such for example FCCee, have motivated substantial and dedicated R&D studies. Tests of 25 and 35 μm sensors highlighted the potential of a thinner design for improved time resolution. Consequently, comprehensive studies were conducted on progressively thinner sensors, arriving to test the first 15 μm ever produced by FBK, achieving a time resolution well below 20 ps. Moreover, to address the small signal at the input of the electronics, the innovative concept of double-LGAD was introduced and tested for the first time. Notably, this innovative approach not only yields the significant benefit of an enhancement of the charge at the input of electronics but also translates into an improvement in overall time resolution. Finally, the results of a very recent investigation on how time resolution depends on the angle of incident particles will be shown.
The talk will include an outline of the new key results and insights, along with a preview of the upcoming steps in these technological advancements.
| Collaboration | ALICE Collaboration |
|---|---|
| Role of Submitter | I am the presenter |
