Discharge Atomic Iodine Generator (DAIG) for a COIL

Abstract : This report results from a contract tasking Institute of Physics, Academy of Sciences CR as follows: B. Technical Proposal / Description of Work: The results and experience gathered during the previous contract can be a good base for the following-on research on this subject. We would like to solve the remaining problems and improve this alternative method of atomic iodine generation. The work on these tasks can be described as follows: To increase the efficiency of atomic iodine generation, i.e. a dissociation degree and atomic iodine number density with CH3I and CF3I by: (i) optimization of experimental conditions by adding small amounts N2 or NO into the gas discharge mixture, (ii) optimization of plasma conditions by RF power loaded into the discharge chamber, shortening the wolfram rod electrode, and a more delicate impedance matching, (iii) by other configuration of injector holes to decrease the cavity pressure.