SPEC application for achieving inelastic X-ray scattering experiment in the SSRF

TL;DR

This paper details the development of a SPEC-based control system for inelastic X-ray scattering experiments at SSRF, enabling synchronized control of multiple devices and successful experimental execution.

Contribution

It introduces a novel method integrating SPEC with EPICS for complex device linkage control in IXS experiments at SSRF.

Findings

Successful implementation of SPEC control system for IXS at SSRF

Synchronization of monochromator, SDD, and ionization chamber achieved

Experimental results confirm the method's feasibility

Abstract

In order to carry out inelastic X-ray scattering (IXS) experiment at BL15U1 beamline of Shanghai Synchrotron Radiation Facility (SSRF), the data acquisition and control system based on SPEC software has been developed. The IXS experimental method needs linkage control of monochromator, silicon drift detector (SDD) and ionization chamber on continuous segment-scan mode with variable step size, and gains the data of energy, spectrum and light intensity synchronously. A method is presented for achieving this function which was not realized only by using SSCAN of Experimental Physics and Industrial Control System (EPICS). This paper shows work details including control system description, SPEC configurations for EPICS devices, macro definitions and applications in the BL15U1. An IXS experiment was executed by using the SPEC control system, its results prove that the method is feasible to perform the experiment.