Oops, sorry about including Future Law, which has no bearing on the questions I'm asking, yet.
My copy of Tech Law show the following (abbreviated) material in the second column on p. 31.
(14) Auxiliary Reactor: (Powers only ship on-board systems; no power for weapons, drives, or shields...
Example: To determine the volume and cost of the aux. reactor.
Additional Facilities
I do have a little quibble about with the aux. reactor not powering the SLD. A submarine, the closest to a starship I know of, has two aux. power sources. A diesel generator and batteries that can provide limited power that can be used to drive the propeller at a very little speed. Does SM: P have the same restriction placed on the aux. reactor?
I've discovered a couple more items.
One is between (12)Reactor/Energizer calculations on SM1 Tech Law p. 31 and the Starship Design Worksheet SM1 Tech Law p. 34.
(12) Reactor/Energizer
Matter/Antimatter Reactor Volume = 0.5 x TER
Fusion Reactor Volume = 1.0 x TER
Fission Reactor Volume = 2.0 x TER
Worksheet (12) Reactor/Energizer
Matter/Antimatter Reactor Volume = 0.5 x TER
Fusion Reactor Volume = 0.75 x TER
Fission Reactor Volume = 1.5 x TER
Personally, I like the Fusion and Fission factors from the worksheet better. However, which one is correct?
The other is in (5) Required Astronautic crew SM1 Future Law p. 28 and 29 dealing with the Sensors and Communication sub-entries.
Important cost considerations for the Bridge are Sensors and Communications. They play no significant part in volume, because they are very compact in the high technology of Space Master, and their consoles have already been purchased. However, the additional equipment cost must be taken into account.
p. 28 last paragraph above Sensors.
Communications (p. 29): The cost and volume is the same for both Tachion Beam and Laser transmission/reception ability.
The earlier entry states that communications equipment volume doesn't have a significant part in the design. Of course I could be understanding the text wrong.