The Wide-field Spectroscopic Telescope (WST: https://wstelescope.eu/, arXiv:2403.05398) is an innovative 12-m class wide-field spectroscopic telescope with simultaneous operation of a large field-of-view (3 sq. degree) and high multiplex (30,000) multi-object spectrograph facility with both medium and high resolution modes (MOS), and a giant panoramic (3x3 sq. arcmin) integral field spectrograph (IFS).

WST is a Research and Innovation Action funded by the European Research Executive Agency (REA) under the powers delegated by the European Commission under Grant Agreement No. 101183153 - WST - HORIZON-INFRA-2024-DEV-01.

Under this agreement, ESO is contributing, among other, to the WST Detector Workpackage. Within this framework ESO is offering a postdoctoral research position for the development of detector simulations using the Pyxel environment (https://esa.gitlab.io/pyxel/page/introduction/).

For WST, the detector is one of the drivers of system performance, and a full detector trade-off is currently ongoing (CCD vs CMOS, silicon thickness and QE, operating temperature). The goal of this project is to produce high-fidelity simulations of the actual detector readouts of the instrument's focal plane, thereby extending the instrument's end-to-end simulation to also include the (significant!) impact of detector effects on scientific data. These simulations will directly support the WST detector trade-off quantifying the impact of detector physics on the survey performance. These simulations may be extended to detectors currently under test at ESO for future instrumentation.

The simulations will be conducted using the Pyxel detector simulation framework: which is written in Python. This framework is developed and supported by ESA and ESO is a contributor for detector models and functions with inputs from the ESO detector group.