title: Analysis of the pre-flight and post-flight calibration procedures performed on the Liulin space radiation dosimeter.
abstract: Liulin, a dosimetry-radiometry system, was developed to satisfy the requirements for active flux and dose rate measurements for the flight of the second Bulgarian cosmonaut in 1988. The system consists of a compact battery-operated silicon solid state detector unit and a read/write microcomputer and telemetry unit. We describe the pre-flight calibrations with charged particles, using radioactive sources and accelerated 170 MeV/nucleon proton and alpha particles at the Dubna, Russia cyclotron. We discuss comparisons with data obtained on Mir with the French-built tissue equivalent LET spectrometer NAUSICAA. Lastly, we describe post-flight calibrations performed with 1 GeV/nucleon 56Fe ions at the Brookhaven National Laboratory AGS accelerator, where the instrument was mounted in tandem with several thin position-sensitive silicon detectors behind a stopping target. The silicon detectors provided an energy spectrum for the surviving charged nuclear fragments for which the flux and absorbed dose were recorded by Liulin.
authors.affiliation: Solar-Terrestrial Influences Laboratory, Sofia, Bulgaria.
authors.forename: T s
authors.initials: Ts
authors.lastname: Dachev
authors.forename: J
authors.initials: J
authors.lastname: Semkova
authors.forename: V
authors.initials: V
authors.lastname: Petrov
authors.forename: V
authors.initials: V
authors.lastname: Redko
authors.forename: V
authors.initials: V
authors.lastname: Bengin
authors.forename: T
authors.initials: T
authors.lastname: Kostereva
authors.forename: J
authors.initials: J
authors.lastname: Miller
authors.forename: L
authors.initials: L
authors.lastname: Heilbronn
authors.forename: C
authors.initials: C
authors.lastname: Zeitlin
mesh_terms: D000512:Alpha Particles; D002138:Calibration; D003359:Cosmic Radiation; D004867:Equipment Design; D020450:Heavy Ions; D018499:Linear Energy Transfer; D010315:Particle Accelerators; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation*; D011874:Radiometry; D019445:Solar Activity; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft / Q000295:instrumentation*