An apparatus, method, and system relating to radiation detection of low-energy beta particles are disclosed. The chuck assembly includes a wafer-supporting first chuck element surrounded by a second chuck element having a lower component, skirting component and upper component each with a surface portion extending opposite the first element for guarding thereof. A pair of bent arms respectively extends from other opposite sides of the top cover, to prevent excessive bending of any cable secured in the holder. The first node sends the query and the Bloom filter to a second node, which determines its search results for a second of the multiple keywords in accordance with the Bloom filter. A telescopic manipulator unit has elements adapted to select and pick up the doses required to fill patient-specific medication prescriptions from a matrix of unit doses and elements for coupled interaction with the compartments to directly release the picked up doses therein. As a result, it is possible to reduce switching loss during a lighting of the discharge lamp and to supply sufficient voltage in the lighting preparation period.