urn:esa:psa:context:instrument:gio.epa 1.0 1.11.0.0 Product_Context urn:nasa:pds:context:instrument:epa.gio 2021-02-24 1.0 Changed inst LIDs from u:n:p:c:i:instID.scID to u:n:p:c:i:scID.instID Changed LIDs from urn:nasa:pds: to urn:esa:psa: And per "Guide toPDS4 Context Products" v1.7, changed all lidvid_reference to lid_reference urn:esa:psa:context:instrument_host:spacecraft.gio instrument_to_instrument_host McKenna-Lawlor S et al., The Energetic Particle Experiment (EPA) and its Preliminary In-flight Performance, ESA SP-1077, ESA Pub Div, Noordwijk, Netherlands, 53-66, 1986. reference.MCKENNAETAL1986 ENERGETIC PARTICLE EXPERIMENT Particle Detector not applicable not applicable Instrument Overview =================== The Energetic Particle Experiment (EPA aboard the Giotto spacecraft measured the energy distribution of electrons, photons and heavier nuclei during the cruise and encounter phases of the mission. The detector system consisted of three particle telescopes (T1, T2, T3), each incorporating two totally depleted silicon surface barrier layer detectors, and employing both active and passive background shielding. For additional information, please see the instrument description article included in the Giotto Extended Mission archive documentation.