O. Kiselev's is a more comprehensive study as it was performed in order to test
suitability of gas for GEM CSCs. Their studies have
recommended 
triple gas mixture for the GEM Muon System. This
triple gas mixture exhibited a Lorentz angle of about 
at 4kv/cm
fields at 0.8T. The other gas mixtures O. Kiselev studied appeared to not have
satisfied the criteria of gas amplification, etc. One cannot rule out the
possibility of using 
mixture, as at lower magnetic fields of
at about 5.7 (assuming linear scaling). The other
prospective gas mixture one could study is 
(50:50) which seems to have a lower
Lorentz angle when compared to the triple mixture. Figures 6 and 7 show the
behavior of the triple mixture and the 
mixture.
Assuming that one of these gases would be suitable for the PHENIX detector with a
Lorentz angle of approximately 
at 0.5 T, one can estimate the
resolution degradation due to the Lorentz angle effect. These estimates project
a figure of 45 
m for degradation due to Lorentz angle. However, one has to
keep in mind that the degradation of resolution due to other sources may serve to
worsen the estimated figure.
