An every day example of an application of the discoveries made with particle accelerators would be:

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a MRI machine (Magnetic Resonance Imaging) for looking at human internal body structures.
Cathode ray tubes used in modern televisions
New technologies for manufacturing long-lasting Insulin drugs for diabetics.
Recent methods developed for the identification of lead in drug compounds

a MRI machine (Magnetic Resonance Imaging) for looking at human internal body structures.