LoCuSS: exploring the selection of faint blue background galaxies for cluster weak-lensing

Science and Technology Facilities Council; Royal Society; Ministry of Education, Culture, Sports, Science, and Technology of Japan [26800097]; Core Research for Energetic Universe in Hiroshima University (MEXT program for promoting the enhancement of research universities, Japan); 'World Premier International Research Center Initiative (WPI Initiative)'; Funds for the Development of Human Resources in Science and Technology under MEXT, Japan; CONICYT Anillo project [ACT-1122]