Description
The need to perform reliable heavy flavor tagging and precise low momentum tracking forms a common measurement challenge for many experiments in hadron and particle physics. Performing the measurements in high particle density final states, as those occurring in heavy ion collisions or multi-jet events, calls for silicon pixel detectors combining an outstanding granularity with ultra-light material budget. Despite the diversity of the physics goals addressed by the experiments requiring the aforementioned measurements, the common mission of the pixel detectors turns into similar instrumental challenges. Therefore,silicon pixel detectors of seemingly very different experiments, like ALICE, CBM, PANDA, R3B and future Higgs factories have to fulfill a rather identical set of requirements. The latter may be matched in a unique way with ultra-granular and very thin CMOS Monolithic Active Pixel Sensors (CPS), a technology pioneered for a future Higgs factory (ILC) and successfully used in the STAR-HFT and the ALICE-ITS2 detector, as well as in numerous other devices.
At present, the technology of CPS and their system integration is addressed by numerous interested collaborations, as a consequence of the high detection performances achieved as well as of the intrinsic high potential of the technology. At the same time, the effort needed for mastering and improving the full, highly complex technology chain tends to overburden the resources of small and mid-size collaborations. We advocate that performing the necessary R&D in a technology driven approach with joint project teams crossing the borders of their individual collaborations, as well as of the hadron and particle physics communities, will generate highly valuable assets to overcome the difficulties underlying the R&D. We expect that following this approach will benefit from various synergies and thereby extend the scientific reach of the community.