Accession Number:

ADA402574

Title:

CHAWS Instrument Development and Measurements Analysis

Descriptive Note:

Final rept. 29 Sep 1994-30 Sep 1999

Corporate Author:

NORTHEASTERN UNIV BOSTON MA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Report Date:

2000-03-01

Pagination or Media Count:

5.0

Abstract:

We propose to study the appropriate wake environment and support the development of detectors for the Charge Hazards and Wake Studies CHAWS Missions. Both computer simulations of the detector and laboratory calibrations will be performed. The proposed detector will consist of a high energy resolution Retarding Potential Energy Analyzer and a high spatial resolution drift chamber with MicroChannel Plates. The electric field inside the detector is designed such that the one-to-one correspondence between the incident ion and the collected signal is guaranteed. A fluid dynamic model will be set up to study the effect of the secondary electron, the backscattering, and the negative ion trapping on the potential profile and ion trajectories in the wake. The results of the fluid dynamic model will be compared to hat from the other models. The CHAWS results will be analyzed based on the simulation, including the secondary effects and the time evolution of the plasma parameters. The position of the probes and the operational time sequence of these probes will be modified for best performance.

Subject Categories:

  • Astronautics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE