While fast breeder reactors may seem complex in theory, there are only a few key points to keep in mind during actual operation:

How to start

• 1. Input liquid helium via any input bin. (It is recommended that the input bin has a capacity of at least 32b or higher.)
• 2. Place a certain quantity of iridium neutron reflectors into the machine’s main body. (It is recommended to place 64 reflectors to rapidly increase neutron flux.)
• 3. Place a particle source into the input bus. (Not a neutron source! Only antimony‑beryllium particle sources require at least two to be placed simultaneously in order to activate.)
• At this point, you’ll see the neutron flux steadily increasing; once it reaches the minimum requirement specified in the recipe, the system will operate normally. When paired with a control system, it can be started just once and then run continuously.

Special Note: If the machine still isn’t working despite sufficient flux (the host displays “Insufficient Neutron Flux”), please try toggling the host’s power on and off.

How to Control Neutron Flux Within a Certain Range

• As with machine descriptions in general. If the neutron flux is allowed to increase unchecked, it will eventually lead to an explosion—something we certainly don’t want. Therefore, we need a control system to keep the neutron flux within a specified range. (Of course, you can also choose to manually adjust the settings.)
• Here, we recommend controlling the neutron flux by adjusting the iridium neutron reflector within the control host.
• The specific approach is to use a neutron sensor to read the current neutron flux. When the neutron flux falls below a certain threshold, an iridium neutron reflector is inserted into the host to increase the neutron flux; when the flux exceeds that threshold, the reflector is removed to allow the flux to decrease naturally.

Specific tasks

• 1. Set the neutron flux threshold in the settings—here, set it to 100 MeV. (The unit used in the neutron sensor is MeV; please make the maximum value as large as possible to prevent control failure due to an overly narrow range.)

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• 2. Construct the following devices—here, we’ll cover two distinct versions: the pure GT version and the PIP version.

GT version

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Pip version

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• 3. Place several iridium neutron reflectors into the box. (In theory, any number from 1 to 64 will do.)

At this point, the control system has been fully set up. Please ensure an adequate supply of liquid helium is available before running any recipes.

This operation consumes a maximum of 2084 MB/s of liquid helium during recipe execution, with the proliferation rod capable of processing up to 40.96 K/s.

FAQ

1. Why is the speed so slow even though I only entered 1 ingredient?

Answer: The more input this machine receives, the faster it runs; with 10 or more units of raw material, the processing time can be reduced to under 1 second.

2. Why don’t I see any liquid helium being consumed even though I’ve run the recipe?

Answer: There’s too little raw material—this machine consumes liquid helium once per second. If the raw material is fully processed within 1 second, it won’t consume any liquid helium.

3. Why does the machine still display “Insufficient Neutron Flux” even though the flux has already exceeded the recipe’s minimum requirement?

A: The machine hasn’t been refreshed in time; please try powering the host off and on again to refresh it.