More questions will be added later for cooling, and using the supercooling electromagnets whenever I get around to make a build with them. they're used to log you in. The modpack I used for testing and that prompted these questions is Enigmatica 2 Expert. (like a TOKAMAK with $1~\mathrm{km}$ toroidal vessel), In magnetic confinement many problems are connected with magnetic field and temperature gradients leading to. Still couldn't find a definitive relationship, but a T1DT at 90% efficiency/ (using comparator regulation) produces about 576k, whereas a T5DT at 90% efficiency makes about 2880k (1800 multiplier from base). Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This gives the Bohm diffusion, Thinking about the physics of thermonuclear fusion, I have always had an intuitive sense that making fusion feasible is matter of reactor size. No prob! Effect: ?? In the best-case scenario, the fluctuations occur on the ion gyro-radius scale, $k_{\perp}\approx\frac{1}{\rho_i}$, due to micro-turbulence that is much smaller than the machine size, where the ion gyro-radius is given by Thinking about the physics of thermonuclear fusion, I have always had an intuitive sense that making fusion feasible is matter of reactor size. The efficiency is calculated here - it is basically a function that peaks at 100 at a heat proportional to the combo's 'heat variable', and falls away either side (this constant of proportionality happens to be 1218.76 H/kK). It will be competing with other energy sources, especially nuclear fission. \end{equation} The reaction can be disabled with a redstone signal applied to the bottom center block of the reactor. How can I determine, within a shell script, whether it is being called by systemd or not? Energy is generated by volume while losses should be proportional to surface (this is probably not true for TOKAMAKs where plasma is not optically thick for, Big stars can burn almost any fusion fuel because the released energy cannot escape from its core very quickly. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. %= v_{\perp} n\,. 97Not unless a fusion reactor can run 9 high-pressure turbines. This also has implications on plasma performance. The pack configs for NuclearCraft here, the only major change I see is that max toroid size is now 48 (which is a bit mad, considering 24 is already large enough). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Thanks for contributing an answer to Physics Stack Exchange! How large should an optically large fusion reactor be? where $a$ is the minor radius and $B$ is the toroidal magnetic field. Making statements based on opinion; back them up with references or personal experience. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Is there a word for making a shoddy version of something just to get it working? \Gamma_{\perp}=- D \,\nabla n\,. The cold gas would form a sacrificial boundary layer that would interact with the plasma preventing the ions from impacting the walls. Assuming ITER's magnets are already at the limits of our technology, one that is 10x bigger with 10x the currents and even higher fields at the coil itself is not feasible technology. My goal is to figure out which variables are used in the calculation of other variables, and which are only correlated (eg. Use MathJax to format equations. where $k_{\perp}$ is the wavenumber of turbulent fluctuations perpendicular to the magnetic field. To get the ideal cell count, divide the fuel's … We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. Making this issue because I ran into some issues figuring out cause/effect relationship. In other words I feel like: Now the power: let's just take the reactor to be at 90% efficiency. It only takes a minute to sign up. From testing it seems to affect fuel consumption rate, but I don't know the mathematical relationship, or even if it's related to toroid size and not something else like # of electromagnets (which technically should be the same since fusion reactors are a square). Another quirk I noticed is that efficiency peaks at around 8000kK: and then definitely start's getting into increasing loss of efficiency at the temperature rises. Per tonne? where $N$ is the number of ion-electron pairs, $n$ is the number density and $\Gamma_{\perp}$ is the cross-field particle flux with diffusion coefficient D, In this episode of Automate Everything, I build the largest NuclearCraft Fission Reactor possible while using the default config file. However Only generate reactor that can be turned-off. The amount of cooling done by each cooler is proportional to the coolant's cooling rate config and the max active cooler fluid rate, and is also inversely proportional to the toroid size. Fusion Reactor of Toroid Size 4 A fusion reactor consists of a hollow, square 'ring' of Fusion Electromagnets centered around a Fusion Core. I'm guessing this implies that the self-regulation for temperatures is important, but you want to maintain a high efficiency? Sign in Btw. does temperature cause more power/efficiency, so power / efficiency are positively correlated, or does it affect efficiency, and then a second calculation determines power?). \begin{equation} We need an economic power source; it needs to do more than simply work from a technical viewpoint. Brings complex nuclear engineering to Minecraft! Find A Product. Hey, Making this issue because I ran into some issues figuring out cause/effect relationship. If you want to max out the efficiency, the best option is active cooling using active coolers on the diagonals of the fusion ring (i.e. The bigger the tokamak, the bigger the coils. Aspect ratio is major radius over minor radius. Help fill in my understanding of the Polywell fusion reactor. https://hastebin.com/nomubilaco.bash. Each tick, the process progresses by 5 (the toroid size), so each process will take 234.45/5 = 46.89 ticks. We use essential cookies to perform essential website functions, e.g. anna_v : yes, I like inertial confinement fusion, but perhaps it has also some scaling laws? Both reactors and turbines must be built as a closed, mostly hollow box with no holes and complete edges, including corners. So hopefully my questions were clear, let me know if you have any questions. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Find the equidistance curve between two curves. If a spherical vessel is large enough and can operate close to ambient pressure, it should be possible to build a fusion reactor that achieves breakeven without any magnetic field. A NuclearCraft fusion reactor, fueled by Deuterium to produce Neutron Fluid for one of the end-game crafts and provide 477k RF/t for some energy-expensive operations. Power density may be a key limiting factor. Have Georgia election officials offered an explanation for the alleged "smoking gun" at the State Farm Arena? Finally, the max efficiency will be at 1218.76×670 = 816569 kK. The T5DT reactor seems to have maxed out at 840kK before it started seeing diminishing returns, but it's diminishing returns also came slower, so I'm assuming once again Toroid size plays into this. You can always update your selection by clicking Cookie Preferences at the bottom of the page. Cause: If the reactor is receiving power (seems to consume power at the max rate of 8.192M rf/t) until it heats up to 8k (do all fuel combinations reactions begin at 8000kK?). I had a T1DT reactor peak power production at around 820kK, and then interestingly enough the power production started to decrease beyond that? Cause: The big one, so far it seems related to fuel combination (some have bigger bursts, but use more fuel, etc. Cause: There's a baseline duration number of certain fuel combinations available in the configs, however, it seems like Efficiency or temperature doesn't seem to affect fuel usage, only toroid size, as a T1DT was more than fine at 5 mb/t (as measured by Draconic Evolution Fluid gates) from 0% efficiency, 8kK up to 99% efficiency and 820kK. But he ended up not getting his way... for reasons of cost. So your idea certainly has some support. The fission reactor has to be properly controlled to make sure it is constantly cooled down. Maybe directly related to temperature? Effect: Seems related to the rate at which power increases, also it seems a bit unintuitive as 100% efficiency is a bad thing or a good thing? The most efficient reactor doesn't produce the most power. \tau_E \propto \frac{a^2 B}{T_e}\,. Also it seems like the hard cap that a fusion reactor can produce is 8.192M rf/t, which is a HUGE number (and I'm not opposed to hard max's, otherwise you end up with Environmental Tech levels of power creep), but it seems mechanically weird that this is throttled only because that is the max buffer the reactor can store (and therefore push out). This so-called drift wave turbulence can be analytically shown (see Eq. one of my motivations for this question is that I like big spaceships in sci-fi movies, and scaling laws of fusion reactors can be good arguments why tu build spaceships really big :D :D. I happen to know someone who was involved in the early days of ITER, who thought "it wasn't big enough". To answer your question, I will derive the origin of the above scaling using general principles (see sec. Edited: I've found a mod called Magneticraft with radiation, also Nuclearcraft. Optimize for irradiation. Gaseous fission: Has it even been demonstrated experimentally? Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. If the answer is 100m in diameter, it is achievable. You signed in with another tab or window. Also, for high performance tokamaks, you need a large field, say 5 T on axis. NuclearCraft Mod. Exponential degradation of confinement is generally assumed, which gives the following confinement time for particles in a cylindrical device with minor radius $a$ and length $L$, Based on a simple current loop model, a 10x increase in magnet size results in a 10x increase in required current for the same on axis field. At a fusion reactor's lowest setting, it outputs 150,000 mB/t of steam. Reactors of size greater than 1 will require four sets of Fusion Connectors … The fact that the current function is close is really just a coincidence :P. The heating rate while running is set here - it is proportional to the heat production config value, and is higher/lower for lower/higher efficiencies. (I read Bussard paper some time ago .. there was something about scaling with $R^4$). en.wikipedia.org/wiki/Inertial_confinement_fusion, MAINTENANCE WARNING: Possible downtime early morning Dec 2, 4, and 9 UTC…. would also be fine, I can undertand if you want to maintain some transparency to encourage user testing, but there are some things I'm just stumped on, and does seem to be in direct contrasting to the great documentation in fission reactors.

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