A fast simulation package for STCF detector

Abstract

A Super Tau Charm Facility (STCF) is one of the major options for the accelerator-based high energy project in China in the post-BEPCII era, and its R&D program is underway. The proposed STCF will span center of mass energies (√(s)) ranging from 2 to 7 GeV with a peaking luminosity above 0.5× 1035 cm−2 s−1 at √(s)=4.0 GeV, and will provide a unique platform for tau-charm physics and hadron physics. In order to evaluate the physical potential capabilities and optimize the detector design, a fast simulation package has been developed. This package takes as inputs the response of physical objects in each sub-system of the detector including resolution, efficiency as well as related variables for the kinematic fit and the secondary vertex reconstruction algorithm. It can flexibly adjust the responses of each sub-detector system and is a critical tool for the STCF R&D program.

Electromagnetic Structure of the Neutron from Annihilation Reactions

“…Further analysis of the BESIII data used for the study in [24] is foreseen to disentangle the electromagnetic FFs for the first time without employing assumptions, as before by the FENICE experiment. Moreover, the proposed Super tau-charm factory projects in China [42] and Russia [43], with an integrated luminosity two magnitudes higher than that of BEPCII, show great potential to reach high precision in the measurement of the cross section for e + e − → n n and the |G n E |/|G n M | ratio.…”

Experimental Program for Super Tau-Charm Facility in China

“…Besides, there is potential to increase luminosity and realize longitudinal electron-beam polarization in future upgrade. The STCF detector, a state-of-the-art 4 -solid-angle particle detector operating at a high luminosity collider, is a general purpose detector [3,4]. It incorporates a tracking system composed of an inner tracker and main drift chamber that is able to detect the low-momentum particles with a high efficiency, a particle identification system that provides superior identification ability for charged particles, an electromagnetic calorimeter with an excellent energy resolution and position resolution of photon, a super-conducting solenoid and muon detector that provides sufficient / suppression power.…”

Feasibility study of measuring $$b\rightarrow s\gamma $$ photon polarisation in $$D^0\rightarrow K_1(1270)^- e^+\nu _e$$ at STCF

“…The STCF detector is a general purpose detector designed for e + e − collider which includes a tracking system composed of the inner and outer trackers, a particle identification (PID) system with 3σ charged K /π separation up to 2 GeV/c, and an electromagnetic calorimeter (EMC) with an excellent energy resolution and a good time resolution, a super-conducting solenoid and a muon detector (MUD) that provides good charged π/μ separation. The detailed conceptual design for each sub-detector, the expected detection efficiency and resolution can be found in [18,20,21].…”

“…Currently, the STCF detector and the corresponding offline software system are under active development. A reliable fast simulation tool for STCF has been developed [21], which takes the most common event generators as input to perform a fast and realistic simulation. The simulation includes resolution and efficiency responses for tracking of final state particles, PID system and kinematic fit related variables.…”