Determine/measure energy of neutral particles I wonder that nobody came up with this question in advance - maybe it is too obvious? However..
How can neutral particles be measured (with respect to their energy in a particle detector)?
I know there is, for example, Kamiokande to observe neutrinos but I haven't seen something Kamiokande-like as part of a particle accelerator/detector like CMS, Desy etc.
How do they measure those particles?
 A: Much more complicated experimental setups and analysis are used in hadron experiments, take cms for example:

Basically, when no charged track is seen in the silicon charged particle tracker, but energy is deposited in the calorimeters, and the directon of the momentum points to the tracking vertex, one assumes a neutral particle has been detected with the energy given by the calorimeter: gammas in the electromagnetic,neutrons in the hadronic calorimeter, the electromagnetic is built so as to see gammas but neutrons will have small probability of interaction, the hadronic has high probability of neutrons and other hadrons to interact.  One then goes to analysis of the energetics of the event to fit specific hadrons to the assumed neutral tracks , and compares the distributions with monte carlo generated events to get solid numbers with their errors.
I should add that any missing energy from the primary interaction found after the analysis of the events,  is attributed to neutrino or generally weakly interacting particles , which are sought after for new physics.
