Following previous experience, we identified what we believe could be an optimal EIS study, highly complementary to the varied ground-based observations that we expect to conduct.
The proposed EIS study is a slightly modified version of program 5 of the EIS Flare Study Options (http://www.mssl.ucl.ac.uk/www_solar/eisflarestudy.html), in particular with an increased exposure time (from 2 s to 4 s) and a reduced raster size of 104" to 72", in order to maintain raster cadence at an acceptable level. The increased exposure time has been decided after analyzing previous data, which showed high noise levels in several lines. Raster duration and data volumes need to be verified by the EIS Team.
This is a raster study measuring plasma dynamics and density changes during solar flares over a broad range of temperatures. The EIS diagnostics, combined with information on chromospheric and TR dynamics (IBIS, IRIS), as well as photospheric and magnetic evolution (SOT, ROSA, FIRS), will represent a very complete dataset for analysis of many aspects of flare physics.
EIS STUDY TITLE: qub_hi-cad_flare_v2
EIS STUDY ACRONYM: qub_hi-cad_flare_4s_exp_72"x104"
EXPOSURE TIME: 4 sec
STEP SIZE 2"
RASTER DURATION: 3 m 42 s
LINES: He II, O V (density sensitive pair), O VI, Mg VI, Mg VII, Si X, S XIII, Fe VIII, Fe X, Fe XI (density sensitive pair), Fe XII (density sensitive pair), Fe XIII (density sensitive pair), Fe XIV (density sensitive pair), Fe XV, Fe XVI, Fe XVII, Ca XV (density sensitive pair), Fe XXIII, Fe XXIV.
DATA VOLUME: 15.2 Mbits per raster (x16 repeats per hour = 243 MBits per hour = 973 Mbits for 4 hours)