PICAP Project: Prototype Data for Positron Detection in Space

A NASA project to develop and test a prototype Positron Identification by Coincident Annihilation Photons (PICAP) system. The research aims to measure Galactic cosmic ray positrons at moderate energies (1-100s of MeV/nucleon), a previously unexplored range. The prototype was tested with negatrons and positrons at Jefferson Laboratory and with protons at the Indiana University Cyclotron Facility.

Use Cases

• Training models to identify positron signatures based on coincident annihilation photon detection.
• Analyzing particle flux and fraction data for studies of transport and modulation in the Local Interstellar Medium.
• Developing instrument simulation and calibration methods for space-based charged particle detectors.
• Studying Solar particle events and acceleration processes using positron measurements as a secondary channel.

Strengths

• Project is active with a last update date of 2026-03-13, indicating ongoing development.
• Focuses on a novel detection technique for a previously unmeasured energy range (a few MeV to 100s of MeV/nucleon).
• Prototype testing was conducted at established facilities like Jefferson Laboratory.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset description is project-focused; the availability and format of the actual measurement data are unclear.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Experimental data from prototype detector testing at particle accelerator facilities.

Time Range

Project active as of 2026; specific data collection period is not stated.

Freshness

Last updated 2026-03-13 20:33:04.296080; freshness should be verified.

Geography

Testing conducted at Jefferson Laboratory and Indiana University Cyclotron Facility; intended for space applications.