NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS
Three new approaches to obtain information on the confined fast alphas in International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by {approx}140 microns per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG03-92ER54150
- OSTI ID:
- 837215
- Report Number(s):
- GA-A24682; TRN: US0701845
- Resource Relation:
- Conference: 15TH HIGH TEMPERATURE PLASMA DIAGNOSTICS CONF., SAN DIEGO, CALIFORNIA, APRIL 19-22,2004 AND TO BE PUBLISHED IN REV.SCI.INSTRUM.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Threshold bubble chamber for measurement of knock-on DT neutron tails from magnetic and inertial confinement experiments
Alpha Particle Diagnostic