A small particle model as a possible explanation of recently reported cavity lights

Fryberger, D.

doi:10.1016/s0168-9002(00)00987-6

Cited by 4 publications

(4 citation statements)

References 7 publications

(4 reference statements)

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“…A small particle model as a possible explanation of cavity lights was discussed in Refs. [8,9]. The conclusion was that spheres of any known material cannot, in this model, explain the observations.…”

Section: Introductionmentioning

confidence: 81%

Trapping of charged and dust particles in the rf field of a superconducting cavity

Novokhatski

Heifets

2018

Phys. Rev. Accel. Beams

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We suggest an explanation of the observations of the glowing filaments in a superconducting cavity. We show that the motion of a charged particle in a multicell rf cavity and of a dust particle in a single-cell rf cavity can be stable. The analysis of stability is illustrated by numerical calculations. This effect may also explain the possible failure of high gradient tests of superconducting cavities, which are planned to be used in the linear accelerators for XFEL.

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Section: Introductionmentioning

confidence: 81%

Trapping of charged and dust particles in the rf field of a superconducting cavity

Novokhatski

Heifets

2018

Phys. Rev. Accel. Beams

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“…Along these lines, Ref. [30] discusses a BL model based upon a kind of electromagnetic monopole that offers the possibility to explain many of these perplexing questions, e.g., the essential nature of the orbiting objects, their interactions, their internal stability, their orbital stability, and their ability to form quasi-stable macromolecular formations. Based upon this model, some experimental predictions can be made, which we plan to explore in future runs.…”

Section: An Intriguing Questionmentioning

confidence: 99%

Experimental studies of light emission phenomena in superconducting RF cavities

Anthony

Delayen

Fryberger

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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Experimental studies of light emission phenomena in superconducting RF cavities, which we categorize under the general heading of cavity lights, are described. The cavity lights data, which were obtained using a small CCD video camera, were collected in a series of nine experimental runs ranging from ~½ to ~2 h in duration. The video data were recorded on a standard VHS tape. As the runs progressed, additional instrumentation was added. For the last three runs a LabVIEW controlled data acquisition system was included. These runs furnish evidence for several, possibly related, light emission phenomena. The most intriguing of these is what appear to be small luminous objects ≤ 1.5 mm in size, freely moving about in the vacuum space, generally without wall contact, as verified by reflections of the tracks in the cavity walls. In addition, on a number of occasions, these objects were observed to bounce off of the cavity walls. The wallbounce aspect of most of these events was clearly confirmed by pre-bounce and post-bounce reflections concurrent with the tracks. In one of the later runs, a mode of behavior was observed that was qualitatively different from anything observed in the earlier runs. Perhaps the most perplexing aspect of this new mode was the observation of as many as seven luminous objects arrayed in what might be described as a macromolecular formation, coherently moving about in the interior of the cavity for extended periods of time, evidently without any wall contact. It is suggested that these mobile luminous objects are without explanation within the realm of established physics. Some remarks about more exotic theoretical possibilities are made, and future plans are discussed.

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“…This phenomenon is now called "cavity lights." A recent paper [2] argued that neither a conventional plasma discharge nor a small particle model can properly explain the observed phenomenon. Since the cause of this phenomenon is still unknown, it bears further study.…”

Section: Recently In Experiments At Tjnaf (Thomas Jefferson National ...mentioning

confidence: 99%

Mapping of Ambient Magnetic Fields within Liquid Helium Dewar for Testing of a DC SQUID Magnetometer

Newhouse¹

2003

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A small particle model as a possible explanation of recently reported cavity lights

Cited by 4 publications

References 7 publications

Trapping of charged and dust particles in the rf field of a superconducting cavity

Trapping of charged and dust particles in the rf field of a superconducting cavity

Experimental studies of light emission phenomena in superconducting RF cavities

Mapping of Ambient Magnetic Fields within Liquid Helium Dewar for Testing of a DC SQUID Magnetometer

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