Compact Fusion Reactor

The Compact Fusion Reactor is an LuV tier multiblock for mass producing plasmas and molten rare metals from nuclear fusion. Unlike the regular Fusion Reactor, the Compact Fusion Reactor has a built-in 64 parallels plus an additional 64 for every machine tier above the minimum recipe tier. Multi-amp and laser energy hatches are also supported to compensate for energy hatches being able to pull more than 2A of power. Overclocks only occur when the tier of the machine exceeds the minimum recipe tier. The first three tiers run 2/2 perfect overclocks while the last two tiers run 4/4 perfect overclocks. The Compact Fusion Reactor is not technically required for progression, but it is extremely useful for producing catalyst for the Dimensionally Transcendent Plasma Forge and generating power in the XL Turbo Plasma Turbine or the Extreme Heat Exchanger (EHE) with a series of XL Turbo Steam Turbines behind it.

Although craftable in LuV, it is not recommended to build a Compact Fusion Reactor until later on when the demand for plasma is much higher. The compact fusion coils are extremely expensive and there is no tier skipping; the Compact Fusion Reactor is limited to the same recipes as the regular Fusion Reactor. Do not waste countless hours building a Mk-I just to realize that it cannot produce molten americium.

Spreadsheet: GTNH Power Planner 2.9

The Compact Fusion Reactor is effectively a larger Fusion Reactor with similar restrictions on the location of the buses/hatches. Input hatches are limited to specific glass blocks on each side, output hatches are limited to the same glass blocks on each side, and energy hatches are limited to specific casings on each curve. The glass is NOT tiered--there is a very specific type of glass needed for each structure tier, but it can be either normal or transparent. Multi-amp and laser energy hatches are supported for serious throughput. Every tier has a minimum voltage for the energy hatches. There is no maintenance hatch. Use the Multiblock Structure Hologram Projector to visualize/build the structure.

Structure

• Controller: Middle center, 4th layer
• 1662-1695 Fusion Machine Casing^[1]
• 560 Compact Fusion Coil^[1]
• 128 Frame Box^[1]
• 63-93 Borosilicate Glass^[1]
• 1-32 Energy Hatch: Specific casings on each curve
• 1+ Input Hatch: Specific glass on each side
• 1+ Output Hatch: Specific glass on each side

Wallsharing

Compact Fusion Reactors may wallshare each of their sides to save on casings, glass, frame boxes, and buses/hatches. However, that does not include any of the compact fusion coils. It is highly recommended to share stocking input hatches or crafting input buffers between every two machines.

The Compact Fusion Reactor functions the same as a regular Fusion Reactor. There can be up to 32 energy hatches per machine to increase its total energy capacity and split the total power consumed. Every recipe has a minimum energy capacity or start cost that must be met before the machine can begin processing. Consecutive recipes do not pay the start cost which means a lot of power can be saved by continuously running the Compact Fusion Reactor or at least increasing the size of crafting requests.

The voltage of the energy hatches is irrelevant as long as it is above the minimum tier and supplies enough EU/t. However, there are potential scenarios where the energy hatches can draw more than 2A of power depending on the recipe, tier of the machine, and number of parallels/overclocks. The solution is switching to 4A or even 16A energy hatches in those scenarios. Laser energy hatches can also technically work but they are extreme overkill and not worth it at all, especially because the power is split evenly amongst the energy hatches; there cannot be one really high amp energy hatch to compensate for many low amp energy hatches.

Overclocks only occur when the tier of the Compact Fusion Reactor exceeds the minimum recipe tier. They have nothing to do with the tier of the energy hatches or the available power. The first three machine tiers run 2/2 perfect overclocks while the last two tiers run 4/4 perfect overclocks.

The Compact Fusion Reactor offers a significant number of parallels. There is a built-in 64 parallels plus an additional 64 for every machine tier above the minimum recipe tier. Furthermore, recipes that are overclocked beyond 0.05s (1 tick) multiply the total number of parallels as compensation for the capped speed. A Mk-I recipe in a Mk-V Compact Fusion Reactor can have up to 5120 parallels, for example.

The only LED button in the GUI of the controller sets the batch size of the Compact Fusion Reactor. It is highly recommended to increase the batch size to save TPS and reduce lag. Use the Parametrizer memory card to copy-paste settings between Compact Fusion Reactors of the same tier. Note that batch size does NOT improve the throughput of the machine like parallels do. Recall the difference:

• Batch Size - More recipes per iteration, same EU/t, longer duration.
• Parallels - More recipes per iteration, higher EU/t, same duration.

The following table lists all the available recipes by their start cost (EU), total output (L/s), maximum power consumption (EU/t), and the minimum number of energy hatches that support ALL overclocks and ALL parallels. Multi-amp energy hatches are identified by the number of asterisks (*) and only used if absolutely necessary. Higher voltage energy hatches can be used instead of multi-amp energy hatches as long as the energy capacity still exceeds the start cost. The "universal" setups for all recipes, overclocks, and parallels are listed in the table above.

Some fusion recipes use plasma as one or both of their input ingredients. This forms a chain that culminates with celestial tungsten plasma. Each combination is more energy dense than the last which reduces the penalty of using the XL Turbo Plasma Turbine for power. The following tables list the order of plasmas and the ratio of Compact Fusion Reactors to sustain ONE running the highest tier plasma available, assuming they all have enough power for the maximum number of overclocks and parallels.

The required L/s refers to how much fluid is needed for the highest tier plasma. The per reactor L/s refers to the values in the table above, or how much fluid one Compact Fusion Reactor can actually produce. The latter is responsible for the ratios. Note that it may be easier to just pattern fusion recipes and level-maintain the highest tier plasma available rather than dedicate Compact Fusion Reactors to specific recipes. The ratios also do not have to be perfect--it is significantly easier to overestimate the lower tier plasmas than to follow these numbers exactly.

There are five tiers of catalyst for use in the Dimensionally Transcendent Plasma Forge. Each catalyst is crafted with various plasmas in an Industrial Mixing Machine or Transcendent Plasma Mixer. The following tables list the required plasmas and the ratio of Compact Fusion Reactors to sustain 10,000 L/s of each, assuming they all have enough power for the maximum number of overclocks and parallels.

The per reactor L/s refers to the values in the table above, or how much fluid one Compact Fusion Reactor can actually produce. Note that it may be easier to just pattern fusion recipes and level-maintain them rather than dedicate Compact Fusion Reactors to specific recipes. The ratios also do not have to be perfect--it is significantly easier to overestimate the lower tier plasmas than to follow these numbers exactly.

Plasmas are incredibly energy dense and generate an immense amount of power in the Large Plasma Turbine, the XL Turbo Plasma Turbine, or the Extreme Heat Exchanger (EHE) with a series of XL Turbo Steam Turbines behind it. The most popular plasmas are highlighted blue in the following table and the remaining subsections cover a few example setups. Use the planner linked at the top for a complete list of turbine materials and full setup breakdowns.

See More: XL Turbo Plasma Turbine

The XL Turbo Plasma Turbine (XLPT) consumes plasma every second to generate an immense amount of power. It has 16x the throughput as the LPT with only 12 turbines, supports multi-amp and laser dynamo hatches, and does not explode if the dynamo hatch is broken while the machine is running. However, the turbines must be identical for the machine to run, there are harsher penalties for exceeding the optimal flow rate, there are penalties for using lower density fuels, and the machine must be running for at least 50 seconds to fully warm-up. Consumed plasma is returned as its molten variant.

See More: Extreme Heat Exchanger

The Extreme Heat Exchanger (EHE) evaporates distilled water into dense supercritical steam with the heat from plasma regardless of the input rate. The dense supercritical steam must then pass through a series of XL Turbo Steam Turbines (XLST) to generate an immense amount of power. The supercritical, superheated, and regular variants of the machine all have 16x the throughput as the Large Steam Turbine, support multi-amp and laser dynamo hatches, and do not explode if the dynamo hatch is broken while the machine is running. Consumed plasma is returned as its molten variant.