Surface processing and discharge-conditioning of high voltage electrodes for the Ra EDM experiment

Ready, Roy; Arrowsmith-Kron, Gordon; Bailey, K.; Battaglia, Dominic; Bishof, Michael; Coulter, Daniel; Dietrich, Matthew R.; Fang, Ruoyu; Hanley, Brian; Huneau, Jake; Kennedy, Sean F.; Lalain, Peyton; Loseth, Benjamin; McGee, K.; Mueller, Peter; O’Connor, Thomas P.; O’Kronley, Jordan; Powers, Adam; Rabga, Tenzin; Sanchez, Andrew; Schalk, Eli; Waldo, Dale; Wescott, Jacob; Singh, J.

doi:10.1016/j.nima.2021.165738

Cited by 11 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many parameters that may affect dielectric breakdown in noble liquids can be explored with the XeBrA apparatus. Electrodes from various materials, with diverse coatings [66,67], and with different surface finishes [68,69] can be studied. A promising direction to explore is whether the surface treatments that result in the dramatic reduction of electron emission from stainless steel wires also increase the dielectric strength of noble liquids between similarly-treated stainless steel electrodes [19].…”

Section: Discussionmentioning

confidence: 99%

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

et al. 2019

View full text Add to dashboard Cite

A: As noble liquid time projection chambers grow in size their high voltage requirements increase, and detailed, reproducible studies of dielectric breakdown and the onset of electroluminescence are needed to inform their design. The Xenon Breakdown Apparatus (XeBrA) is a 5-liter cryogenic chamber built to characterize the DC high voltage breakdown behavior of liquid xenon and liquid argon. Electrodes with areas up to 33 cm 2 were tested while varying the cathode-anode separation from 1 to 6 mm with a voltage difference up to 75 kV. A power-law relationship between breakdown field and electrode area was observed. The breakdown behavior of liquid argon and liquid xenon within the same experimental apparatus was comparable.

show abstract

Section: Discussionmentioning

confidence: 99%

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This was followed up by another measurement with a factor of 36 more sensitivity, and a detailed analysis of systematics indicates that this approach is limited by statistics for 225 Ra for the foreseeable future (Bishof et al, 2016). Several upgrades to increase the atom number (Booth et al, 2020), the electric field (Ready et al, 2021), and the spin precession readout efficiency (Rabga, 2020) are underway and, once implemented, will result in orders of magnitude improvement to the statistical sensitivity. In the long term, isotope harvesting (see section 4) from FRIB (Ready, 2021) will increase the atom number even more, increase the integration time beyond two weeks, and allow for detailed studies of systematic effects.…”

Section: Radioactive Atomsmentioning

confidence: 99%

Opportunities for Fundamental Physics Research with Radioactive Molecules

Arrowsmith-Kron¹,

Athanasakis-Kaklamanakis²,

Au³

et al. 2023

Preprint

View full text Add to dashboard Cite

Molecules containing short-lived, radioactive nuclei are uniquely positioned to enable a wide range of scientific discoveries in the areas of fundamental symmetries, astrophysics, nuclear structure, and chemistry. Recent advances in the ability to create, cool, and control complex molecules down to the quantum level, along with recent and upcoming advances in radioactive species production at several facilities around the world, create a compelling opportunity to coordinate and combine these efforts to bring precision measurement and control to molecules containing extreme nuclei. In this manuscript, we review the scientific case for studying radioactive molecules, discuss recent atomic, molecular, nuclear, astrophysical, and chemical advances which provide the foundation for their study, describe the facilities where these species are and will be produced, and provide an outlook for the future of this nascent field.

show abstract

“…The sensitivity of the Hg EDM experiment results from a relatively high density of optically polarized atoms (N ∼ 10 14 ) and long coherence times (hundreds of seconds), as well as a variety of auxiliary measurements and techniques developed over the years to reduce systematic errors [49]. Searches for EDMs of diamagnetic atoms in other systems have been carried out [50][51][52][53][54]; many of these are ongoing efforts with the prospect of improving measurement accuracy by orders of magnitude, such as the radium EDM search in which several upgrades are in the process of being implemented [55,56]. There are also a number of new experiments that have the potential to explore unconstrained parameter space for symmetry violating effects in the nuclear sector [45,[57][58][59][60][61][62][63], such as the CENTREX experiment that employs a cold beam of TlF molecules [64], a search particularly sensitive to the proton EDM [65,66].…”

Section: Searches For Parity-and Time-reversal-violating Electric Dip...mentioning

confidence: 99%

Quantum Sensors for High Precision Measurements of Spin-dependent Interactions

Budker¹,

Cecil²,

Chupp³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The applications of spin-based quantum sensors to measurements probing fundamental physics are surveyed. Experimental methods and technologies developed for quantum information science have rapidly advanced in recent years, and these tools enable increasingly precise control and measurement of spin dynamics. Theories of beyond-the-Standard-Model physics predict, for example, symmetry violating electromagnetic moments aligned with particle spins, exotic spin-dependent forces, coupling of spins to ultralight bosonic dark matter fields, and changes to the local environment that affect spins. Spin-based quantum sensors can be used to search for these myriad phenomena, and offer a methodology for tests of fundamental physics that is complementary to particle colliders and large scale particle detectors. Areas of technological development that can significantly enhance the sensitivity of spin-based quantum sensors to new physics are highlighted.

show abstract

Surface processing and discharge-conditioning of high voltage electrodes for the Ra EDM experiment

Cited by 11 publications

References 32 publications

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

Opportunities for Fundamental Physics Research with Radioactive Molecules

Quantum Sensors for High Precision Measurements of Spin-dependent Interactions

Contact Info

Product

Resources

About