Applying Resonant Spin Flippers with Poleshoes and Longitudinal Radio Frequency Fields to Time of Flight MIEZE

TL;DR

This paper presents a study of a time of flight MIEZE spectrometer using advanced RF spin flippers with pole shoes and longitudinal RF fields, achieving high static fields and comparable signal quality to conventional setups.

Contribution

It introduces a novel RF spin flipper design with pole shoes and longitudinal RF fields, enabling higher static fields for high-resolution, compact MIEZE spectrometers.

Findings

Pole shoe/solenoid RF flippers achieve similar signal quality to conventional setups.

Maximum modulation frequency of 100 kHz was achieved.

High static fields are attainable with the new design.

Abstract

A time of flight MIEZE spectrometer study is presented. The instrument uses solenoid radio frequency (RF) spin flippers with square pole shoes and a magnetic yoke. These flippers can achieve higher static fields than conventional resonant RF spin flippers, which employ an air core. High fields are crucial for the construction of a high resolution and compact MIEZE spectrometer. Using both types of flippers two MIEZE spectrometer configurations are constructed and compared on the same beam line. It was demonstrated that the pole shoe/solenoid coil RF flippers can achieve a MIEZE signal, which is similar in quality to the conventional reference setup. The highest obtained modulation frequency was 100 kHz.