Speaker
Description
The Spin Physics Detector (SPD) has been designed to enable comprehensive studies of both unpolarized and polarized components of the nucleon. Its primary objective is to measure the polarized gluonic structure of protons and deuterons through the production of charmonium, open charm, and direct photons. The detector is situated at one of the two interaction points of the new NICA collider complex at the Joint Institute for Nuclear Research in Dubna. The collider is anticipated to receive its first hadron beam by late 2025. It aims to reach a luminosity of 1032 cm-2 s-1 for colliding proton-proton beams at their maximum collision energy of 27 GeV. In its final configuration, the inner region of the SPD detector will include a silicon vertex tracker and a straw tube drift chamber. Charged particle identification for momenta up to 1 GeV/c will be performed using a time-of-flight system. Higher-momentum particles, up to 6 GeV/c, will be identified via focusing aerogel Cherenkov detectors placed in the endcaps. These systems are embedded within a shashlyk-type electromagnetic calorimeter for measuring electromagnetic showers. Two pairs of plastic scintillator beam-beam counters provide measurements for local polarimetry and luminosity control. All these detector elements are encased inside a superconducting solenoid magnet, providing a magnetic field strength of 1.2 Tesla in the center. Additionally, the steel yoke surrounding the magnet is instrumented with mini drift tubes for detecting muons and neutral hadrons. This presentation provides an overview of the ongoing development of the detector's design. Commissioning activities are scheduled in two phases, with initial data collection planned toward the end of this decade.
| Position | Head of Department |
|---|---|
| Affiliation | Joint Institute for Nuclear Research |
| Country | Russia |