SiConsortium
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The overarching goal of the EIC Silicon Consortium is the development and construction of a full tracking and vertexing detector subsystem for the EIC detector(s) based on 65 nm MAPS sensors.
The EIC SC works on two streams of research
- Targeted R&D for the ePIC detector - eRD104, eRD111, eRD113 projects in the EIC Project R&D program.
- Generic R&D for ePIC upgrades/further optimisations or for a second detector – projects in the EIC Generic R&D programme.
To join the EIC Silicon Consortium, please subscribe to the mailing list at https://lists.bnl.gov/mailman/listinfo/eic-rd-silicon-l
EIC Silicon Consortium indico category: https://indico.bnl.gov/category/386/
Coordination team: Giacomo Contin (giacomo.contin@ts.infn.it), Laura Gonella (laura.gonella@cern.ch), Ernst Sichtermann (epsichtermann@lbl.gov).
Targeted R&D for the ePIC detector
Detector configuration for R&D work
The MAPS subsystem configuration consists of barrel layers in the central pseudo-rapidity region and disk arrays in the forward (hadron) and backward (electron) directions. A total of five barrel layers are foreseen, complemented with five disks in the backward direction and five disks in the forward direction.
The reference barrel has two curved inner silicon vertex layers, L0 and L1, with an active length of 270mm and radii of 36 and 48 mm, respectively. These layers are inspired by ALICE-ITS3 and have an anticipated X/X0 = 0.05%. Their radii and length are derived from the dimensions of the reticle and wafer, and otherwise present a trade-off between the physics objective to minimize uncertainty associated with the extrapolation to the collision point and cooling requirements during beam-pipe bake-out. Barrel layer L2 has an active length of 270mm and radius of 120 mm and surrounds L1 and L2. It is intended to have a similar structure of self-supporting curved silicon wafers and X/X0 = 0.05%. The outer barrel layers, L3 and L4, will have a more conventional stave design with active lengths of 540 mm and 840 mm at radii of approximately 27 cm and 42 cm, respectively.
The five disks in the electron direction are currently located at z positions of -250 mm, -450 mm, -650 mm, -900 mm, and -1150 mm. Their outer (active) radii will be approximately 24 cm for the innermost disk at z = -250 mm and 42 cm for the remaining disks. The disk numbering increases with increasing |z|. Going forward, the disks in the electron going direction will be labeled ED0 - ED4. A key objective is to minimize traversed material, since this has a direct and adverse impact on the performance (especially in the electron direction). Current simulations are based on X/X0 = 0.24% per disk.
The five disks in the hadron direction are located at z positions of 250 mm, 450 mm, 700 mm, 1000 mm, and 1350 mm. Their outer (active) radii will be approximately 24 cm for the innermost disk at z = 250 mm and 42 cm for the remaining disks. An additional sixth disk is under consideration. The disk numbering again increases with increasing |z|. Going forward, the disks in the hadron going direction will be labeled HD0 - HD4 (or HD5 if a sixth disk becomes part of the reference). The target material budget is X/X0 = 0.24% per disk.
The disks and barrel layers are anticipated to consist of an upper and a lower half to enable installation with the beam pipe in place.