The Triangular Nuclear Loop basically is a body of plasma encased into an shell made both to preserve its form and protect it. In the case of the Reyvateils, their brains are the shells. The Loop also contains in each one of its hexagonal hinges (the hexagon-like structures in the vertices of the triangle) special Dynamic H-Waves that control the growth of the Reyvateil's body, and also, the Telomere that control their life spans. It wouldn't be an exaggeration to say that the Loop controls completely the life, growth and death of the Reyvateils.
However, because the Third Generation Reyvateils don't have a Triangular Nuclear Loop, they don't enjoy the same benefits as the other Reyvateil kinds, and are doomed to have a short life: 40 years max.
The maximum FFT Spectrum Oscillation the waves emitted by a Triangular Nuclear Loop have is of 5.28 x 10^11 Hz.
The role of the Loop is basically emitting Dynamic H-Waves, which are then absorbed by the Parameno part of the Reyvateil's body, and converted into Dynamic D-Waves by her Grathnode part, which are what keep their bodies in existence. Basically, the Triangular Nuclear Loop is a Dynamic H-Wave generator, and while it could be used for other purposes beyond maintaining the life of a Reyvateil, so far no practical uses have been found for it.
On the other hand, the hexagonal hinges contains an specific kind of Dynamic H-Waves that are released expressly for the purpose of allowing the Reyvateil to grow and mature, all according to the parameters she has programmed in her D-Cellophane. Once these Dynamic H-Waves have been completely depleted, the Reyvateil won't grow anymore, which happens approximately at the age of 18 years.
Also, each Loop is also linked to an specific Soulspace Address and an Spiritual Standard Frequency. The SH Server and the Loop keep a constant communication to ensure that the Reyvateil is still alive. However, if the SH Server doesn't receive a PING from the Triangular Nuclear Loop for more than 48 hours, the Loop will automatically shut down, killing off the Reyvateil, and the SH Server will declare her as dead, freezing off her Cosmosphere as stored data.
While it isn't commonly known, there are actually three kinds of Nuclear Triangular Loops in existence: the Origin Model, the β Model, and the Tyria Model.
This is the model that both Shurelia and Frelia have in their bodies, and it also was the first kind of Triangular Nuclear Loop made. Supposedly, it has nothing in common with the other models aside from the name, although no explanations are available at the moment in how different they are from each other.
However, it's known that unlike the other models, this doesn't have a life span limit imposed on their Reyvateils due to not needing Telomere, which allows their possessors to continue living for as long their SH Servers keep functioning.
This is the model used in the creation of the Pureblooded β-type Reyvateils, and was developed between the creation of Frelia and Tyria. This is the model for which most of the information explained on this article applies, and it's pretty much the standard used for the creation of new Reyvateils.
Unlike the Origin Model, this Triangular Nuclear Loop has a functional limit of 150 years, due to being programmed to cease functioning as soon as the Telomere it has run out. This was done for two reasons:
- To avoid the Loop from shutting suddenly, and prevent any potential anomalies from manifesting in the Reyvateils due to the Loop malfunctioning.
- To give an illusion of generational change to the humans.
However, while the functional time it has is formally of 150 years, other factors (such as using EXEC_FLIP style Song Magic) could cause the Telomere to deplete at a faster rate, diminishing the life span of the Reyvateil. This model was also used for the creation of the only γ-Sublimate Reyvateil.
This is the last model of Triangular Nuclear Loop, and was especially made for the Reyvateil Origin Tyria. It's basically similar to the β Model, except for a single fact: it doesn't have a definite life span limit, and will stop functioning as soon as the Telomere it contains are depleted. Given the great Telomere consumption to which Tyria was subject due to her duties as the creator and Administrator of the Tower of Harvestasha, this means that she will have a much shorter life span in comparison to the Pureblooded β-type Reyvateils.