Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://space.univ.kiev.ua/projects/warning/step.html
Дата изменения: Tue Feb 15 16:50:43 2000 Дата индексирования: Mon Oct 1 22:03:53 2012 Кодировка: Поисковые слова: saturn's moon |
Objective | Precision measurements of the energy, angular, and time distributions in precipitating fluxes of high-energy charged particles with solar, magnetospheric, and anomalous cosmic rays origin. | |
Structure | Two external detecting blocks named "STEP-DI" and "STEP-DII" with mutually perpendicular arrangement and a signal processing block named "STEP-E", located inside satellite. | |
Construction | Both "STEP-DI" and "STEP-DII" have an identical construction of large solid angle telescope from 4 detectors (D1-D4), first 2 of which (D1-D2) are position-sensitive silicon strip-detectors; both D3 and D4 are scintillation CsI(Tl) detectors. | |
Operation | Identification of registered particle and determination of its kinetic energy by means of dE/dx-E method with simultaneous trajectory definition via coordinates of passage through position-sensitive detectors. | |
Specifications | Each detecting block field of view, degree : | 97 x 97 |
Average on the field of view angular resolution: | 8 deg | |
The active area of detectors: D1, D2:
D3: D4: |
20 sq. cm
36 sq. cm 49 sq. cm |
|
Energy resolution : D1 , D2:
D3, D4: |
about 70 keV
15% or better |
|
Overall dimensions of block «STEP-D»:
«STEP-E»: |
200x186x175 (mm)
250x150x220 (mm) |
|
Gross weight of "STEP-DI", "STEP-DII" and "STEP-E": | 13 kg | |
Design total power: | 16 Watt |
|
|
|
|
![]() |
|
|
The intensity of each sort low-energy particles in the full field of view |
![]() |
|
|
Both energy and angular distribution of each sort low-energy particles |
![]() |
|
|
Both energy and angular distribution of each sort particles in 10 differential energy channels |
![]() |
|
|
The angular distribution and total intensities of high-energy particles |
** Calculated meanings, received in assumption of zero discrimination level and absence of "dead zones" in detectors.
*** Based on calculations with straight tracks.
The values of the geometrical factors and energy interval borders are supposed to be finally specified by special calibration measurements.