Редактирование: Guide to the Hypertorus Fusion Reactor (раздел)

=== Main filter expansion and auxiliary production ===

[[File:Hfr-delta-example-filters-and-production.png|400px|thumb|right|Setting up the expansion room on Delta Station for additional filtering, and optionally Freon and Healium production.]]

The lines to and from the original filter loop are brought up on the right, and sent back down again on the left. Many filters are added on this line, most of which lead directly into a connecting port with an associated canister, as in the illustration. There are five key filters, on the top right:

* '''Hydrogen'''. Unable to be safely sent directly into a canister ever since canisters stopped blocking radiation, since Hydrogen turns into Tritium when exposed to radiation. This gets sent into a layer adapter - make sure to remove the vent-to-space piping that the room comes with first - and is split to go to HFR fuel mixing and to Metal Hydrogen mixing.
* '''Tritium'''. Excess can be stored in a canister as a buffer. Sent to HFR fuel mixing.
* '''Proto-Nitrate'''. Stored in a canister, ready to be moved to the HFR moderator when needed.
* '''Healium'''. Stored in a canister, ready to be moved to the HFR moderator when needed.
* '''BZ'''. Excess stored in a canister as a buffer, can be moved to the HFR moderator if needed. Used for Metal Hydrogen formation mixing, Freon formation, and Healium formation.

The next two lines below this are specific to Freon formation, and can be skipped (so the upper BZ manifold then leads directly into the Healium formation mixer; a line to Metal Hydrogen creation can still be pulled up) if Freon formation production is skipped.

* '''CO2'''. Used purely for Freon formation. Excess goes through a pressure valve back to the original filter loop, and is stored in the main CO2 holding chamber.

The next two lines below this are specific to Healium formation, and can be skipped (so the only BZ split heads to Metal Hydrogen, and there is no manifold where Healium and excess BZ returns to the filter loop) if Healium formation production is skipped.

==== Optional: Freon formation ====

Freon formation is the most complicated part of this area, but is necessary if you want to transform excess BZ into Healium. Follow the illustration closely. Assuming CO2 and Plasma are functionally free, this ultimately transforms 7 parts BZ into 40 parts Healium, which is a massive boost to relevance. Combined with BZ production, this can quickly produce large quantities of Healium outside of the HFR itself.

A CO2 filter added specifically for Freon formation takes in excess CO2 from the station and incinerator, and tries to combine it to produce Freon. A pressure valve to send excess CO2 forward in the filter loop, set to some high value such as 3500kPa, prevents excess CO2 from blocking the filter loop if unprocessed.

The mix consumed for Freon is 6 parts plasma, 3 parts CO2, and 1 part BZ. The main limiter for mass is 20 moles of BZ, provided all other gases were added in the correct proportions. Given the variance in input gas temperature straight off the filter loop, adding in heat exchangers to the inputs of mixers is important to ensure the mixers send through the correct ratios of gas mass, and not merely gas pressure.
To avoid unbalancing the BZ mixer, and to reduce gas volumes to quantities easier to equalize, separate the Plasma input pipe network for Freon from the main Plasma pipeline with a gas pump.

The simplest way to maintain even ratios is to mix 25% BZ with 75% CO2 first, then mix this intermediate mix (yellow pipe network in the illustration) at 40% (final: 10% BZ, 30% CO2) with Plasma at 60%.

Maintaining the high temperatures needed for efficient production, while making sure the process doesn't run into a condition that stops processing, '''while also''' making sure the setup can run unattended, takes a bit of work. Conditions to avoid:

* Pressure at either of the Gas Filter outputs, including the loopback output, exceeding 4500kPa. Will quickly happen if frozen (compressed) gas is pumped in and receives heat.
* Insufficient mass for processing. Can happen if the temperature is too high.

The first condition will quickly happen if cold (and so highly compressed) gas is pumped in, then receives heat. The simplest approach to avoid this is to split the production pipe network (brown in the illustration) into two: A staging area, where the gas is heated to at least 800K (the temperature gate will require a Multitool to invert the usual "cooler than" operating mode; at least T2 lasers are required in the Heater), and then set to pressurize the main area up to 2500kPa. This leaves room for the temperature to increase 50% to 1200K, while not exceeding 3750kPa.

For the second condition: The sprawling brown manifolds in the illustration creates a sum volume of 1260L, which is enough to operate at full T4 Heater temperature while meeting minimum mass requirements, with a small amount of leeway for input proportion variation. If this is desired, the temperature gate would need to have its minimum temperature increased and run for a while before the main Heater can have its temperature increased, in order to not exceed Gas Filter maximum pressure. It would also need periodic monitoring to make sure the proportions haven't diverged too much.

==== Optional: Healium formation ====

Significantly easier to produce than the Freon it consumes, and takes up very little space. Given typical gas input temperatures, the Freezer in this gadget can be skipped if Freon formation is skipped. Takes up a small 2x8 block, most of which is the filtered Freon output line.