Noninvasive 3D Field Mapping of Complex Static Electric Fields.
- Kainz A Institute of Sensor and Actuator Systems, TU Wien, 1040 Vienna, Austria.
- Keplinger F Institute of Sensor and Actuator Systems, TU Wien, 1040 Vienna, Austria.
- Hortschitz W Department of Integrated Sensor Systems, Danube University Krems, 2700 Wiener Neustadt, Austria.
- Kahr M Department of Integrated Sensor Systems, Danube University Krems, 2700 Wiener Neustadt, Austria.
- Steiner H Department of Integrated Sensor Systems, Danube University Krems, 2700 Wiener Neustadt, Austria.
- Stifter M Department of Integrated Sensor Systems, Danube University Krems, 2700 Wiener Neustadt, Austria.
- Hunt JR QUASAR Group, The Cockcroft Institute, Daresbury, WA4 4AD, United Kingdom.
- Resta-Lopez J QUASAR Group, The Cockcroft Institute, Daresbury, WA4 4AD, United Kingdom.
- Rodin V QUASAR Group, The Cockcroft Institute, Daresbury, WA4 4AD, United Kingdom.
- Welsch CP QUASAR Group, The Cockcroft Institute, Daresbury, WA4 4AD, United Kingdom.
- Borburgh J Accelerator Beam Transfer group, CERN, 1211 Geneva, Switzerland.
- Fraser MA Accelerator Beam Transfer group, CERN, 1211 Geneva, Switzerland.
- Bartmann W Accelerator Beam Transfer group, CERN, 1211 Geneva, Switzerland.
- 2019-07-20
Published in:
- Physical review letters. - 2019
English
Many upcoming experiments in antimatter research require low-energy antiproton beams. With a kinetic energy in the order of 100 keV, the standard magnetic components to control and focus the beams become less effective. Therefore, electrostatic components are being developed and installed in transfer lines and storage rings. However, there is no equipment available to precisely map and check the electric field generated by these elements. Instead, one has to trust in simulations and, therefore, depend on tight fabrication tolerances. Here we present, for the first time, a noninvasive way to experimentally probe the electrostatic field in a 3D volume with a microsensor. Using the example of an electrostatic quadrupole focusing component, we find excellent agreement between a simulated and real field. Furthermore, it is shown that the spatial resolution of the probe is limited by the electric field curvature which is almost zero for the quadrupole. With a sensor resolution of 61 V/m/sqrt[Hz], the field deviation due to a noncompliance with the tolerances can be resolved. We anticipate that this compact and practical field strength probe will be relevant also for other scientific and technological disciplines such as atmospheric electricity or safeguarding near power infrastructure.
- Language
-
- English
- Open access status
- hybrid
- Identifiers
-
- DOI 10.1103/PhysRevLett.122.244801
- PMID 31322392
- Persistent URL
- https://sonar.ch/global/documents/103343
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