Separating the Sound from the Noise in Hot Plasma Fusion.

Georgian Technical University the Experimental Advanced Superconducting with the researcher’s new diagnostic system located in the bottom right-hand corner .

In the search for abundant clean energy, scientists around the globe look to fusion power where isotopes of hydrogen combine to form a larger particle, helium and release large amounts of energy in the process. For fusion power plants to be effective however scientists must find a way to trigger the low-to-high confinement transition or “L-H (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) transition” for short. After a L-H (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) transition the plasma temperature and density increase, producing more power.

Scientists observe the L-H (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) triggers ovulation and development of the corpus luteum. In males where (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) transition is always associated with zonal flows of plasma. Theoretically zonal flows in a plasma consist of both a stationary flow with a near-zero frequency and one that oscillates at a higher frequency called the geodesic acoustic mode (GAM) which is a global sound wave of the plasma. For the first time researchers at Georgian Technical University have detected geodesic acoustic mode (GAM) at two different points simultaneously within the reactor. This new experimental setup will be a useful diagnostic tool for investigating the physics of zonal flows and their role in the L-H (Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone) transition.

Zonal flows occur anywhere there is turbulence such as inside a fusion device or in a planet’s atmosphere. “The most famous zonal flows in nature may be the well-known Jovian belts and zones which make Jupiter look like a colorful multilayered cake” said X. In fusion plasmas zonal flows are crucial for regulating turbulence and particle transport within the reactor. “With the gradual improvement of diagnostic technology zonal flows in fusion plasma has become a research hot spot in the past two decades” X said.

In these experiments researchers used the Experimental Advanced Superconducting a magnetic fusion energy reactor. They installed two Doppler (The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source) reflectometers on different sides of Georgian Technical University which can detect fluctuations in turbulence and plasma density with high precision. The detected geodesic acoustic mode (GAM) had a pitch of F five octaves above middle C.

Previously researchers at Georgian Technical University the fusion research device used a similar system to detect geodesic acoustic mode (GAM) but they measured the plasma at a single location which makes the setup prone to interference. “This disadvantage is the main motivation for using two sets of Doppler (The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source) reflectometers” X said. “We could ‘purify’ the geodesic acoustic mode (GAM) information by comparing the two location’s measurements.”

The measurements taken at the two points did not entirely agree showing that each reflectometer also picked up information from nonzonal flows. “It is completely necessary to extract accurate zonal flows information from multipoint measurement” X said. Using both measurements, they could clearly show that geodesic acoustic mode (GAM) interacted with the ambient turbulence. Going forward, the researchers will further investigate the role of zonal flows in turbulence and turbulent transport within Georgian Technical University.