|Speaker:||Hwanbae Park (Kyngpook National University )|
|Title:||From CREAM to ISS-CREAM Projects|
|Date (JST):||Wed, Jun 14, 2017, 13:30 - 14:30|
|Place:||Seminar Room A|
It is important to measure the energy spectra to study the origin, acceleration and propagation mechanisms of high-energy cosmic rays. The Cosmic Ray Energetics and Mass (CREAM) experiment was designed and constructed to measure cosmic ray elemental spectra using a series of ultra long duration balloon (ULDB) flights. The CREAM mission had had six successful flights from 2004 to 2010. A 1.1 million cubic meter balloon carried each payload to its float altitude between ～38 km and ～40 km, with an average atmospheric. A cumulative exposure of ～161 days over Antarctica had been achieved. Building on the success of those balloon flights, the payload has recently been converted for exposure on the International Space Station (ISS).
The CREAM on the ISS, ISS-CREAM, will measure cosmic ray elemental spectra at energies beyond the reach of balloon instruments. A payload for the ISS-CREAM is scheduled to launch on August on SpaceX. It is planned that ISS-CREAM will take data for three or more years on the ISS to solve long-standing mysteries of cosmic rays. Top Counting Detector (TCD) and Bottom Counting Detector (BCD) as a two-dimensional detector were designed to separate electrons from protons for electron/gamma-ray physics. The T/BCD each consists of a plastic scintillator attached with 20 by 20 photodiodes and is placed before and after the Calorimeter (CAL), respectively. Some of results from the CREAM and T/BCD will be presented.