The experiment uses a disk of quartz crystal, which vibrates at high frequencies as acoustic waves pass through it. This generates an electric charge, which can be picked up by two conducting plates pressed against the quartz disk. This signal then passes through a superconducting quantum interference device (SQUID), which amplifies the signal so that it can be picked up by the detector.
The whole thing is then encased inside several radiation shields to prevent interference from outside electromagnetic radiation, and supercooled to almost absolute zero to reduce noise in the signal. This allows the device to detect frequencies in the MHz range.
This work describes the operation of a High Frequency Gravitational Wave detector based on a cryogenic Bulk Acoustic Wave (BAW) cavity and reports observation of rare events during 153 days of operation over two seperate experimental runs (Run 1 and Run 2). In both Run 1 and Run 2 two modes were simultaneously monitored. Across both runs, the 3rd overtone of the fast shear mode (3B) operating at 5.506 MHz was monitored, while in Run 1 the second mode was chosen to be the 5th OT of the slow shear mode (5C) operating at 8.392 MHz. However, in Run 2 the second mode was selected to be closer in frequency to the first mode, and chosen to be the 3rd overtone of the slow shear mode (3C) operating at 4.993 MHz. Two strong events were observed as transients responding to energy deposition within acoustic modes of the cavity. The first event occurred during Run 1 on the 12/05/2019 (UTC), and was observed in the 5.506 MHz mode, while the second mode at 8.392 MHz observed no event. During Run 2, a second event occurred on the 27/11/2019(UTC) and was observed by both modes.
These experiments may be disruptive for both future technology, both understanding of scalar wave nature of dark matter and gravitational waves. Not only because simple cheap table top device may replace giant ultrasensitive detectors built in underground in arrangement expensively shielded from all noise. On the other hand its evident that character of signal which it detects is very different from gravitational waves as detected by now and it operates at quite different frequency spectrum than gravitational wave detectors.
For me this device most closely resembles the infamous Accutron sensor device, originally invented and proposed by ingenious Bruce dePalma Unable to afford expensive "electronic frequency counters" to measure the actual vibrations of the Accutron tuning fork, DePalma did the next best thing with what he had; he physically attached the Accutron watch to the face of an electrically-driven "Westclock" (fed by 60 cycle, "AC line current" from the wall). He then measured the "time drift" of the Accutron, compared to the clock, by physically synchronizing the two sweep second hands -- the Accutron's and the Westclock's -- and then measuring how far apart their angular positions were when a ~1000-second "rotor run" was finished.
Richard Hoagland, a former museum curator unemployed for most of that time carried out historical observation of Venus transit with improved Accutron device. Richard Hoagland has gone to the Coral Castle in Homestead, Florida, at the time of the Venus transit of June 2004 to attempt to verify his hypothesis that interaction between the Sun and the planet Venus creates a "torsion wave" which temporarily reduces the inertia of anything it interacts with. His test apparatus consists of an Accutron wristwatch connected to a MicroSet watch timer, displaying on a laptop computer screen.
During only 17 minutes of observation (i.e. 1000 seconds …) the Accutron watch (resonating at 360 Hz) lost one full second. Various aspects of results indicate, that the effect observed has been real. For example from dense aether model follows, that the space-time anomaly will manifest itself twice per conjunction with opposite sign, because its not massive object what get shielded, but its surface. Similar results were found with using of gravitometer detectors during solar eclipses. No need to tell, that both dePalma's expertiments, both Hoagland's observations were completely ignored by mainstream physics, because industry of large detectors is more profitable business. See also:
- Random twists of place: How quiet is quantum space-time at the Planck scale? Fresh zero results from Hogan's interferometer.
- Has light a screening effect on gravitational force?
- Gregory Hodowanec: Experiments with Gravity Wave Signals Hodowanec improved sensitivity of scalar wave detectors tremendeously by using Dirac electrons oscillating inside of AC loaded mica capacitor at place of vibrating resonator. Note that for scalar wave detection only surface gradients and their acceleration (higher derivatives of motion) count.