July 26, 2004 Shift Report -------------------------- RADIATION SUMMARY ----------------- Solar soft proton flux is Moderate. (http://www.srl.caltech.edu/ACE/ASC/) Significant solar activity: The solar flare activity level was high. A total of 5 C and 4 M class events were recorded yesterday. (http://www.dxlc.com/solar/) CMEs reported for past two days: July 25: A large full halo CME was observed after a long duration M1 proton event after noon... There may have been a CME associated with the major flare earlier in the day... (http://www.dxlc.com/solar/- Jan Alvestad) Radiation Measurement Observed Observed/Limit --------------------- -------- -------------- ACE 2hr fluence 6.74e+06 1/53.4 (http://www.srl.caltech.edu/ACE/ASC/) GOES-10/P2 4-9 MeV protons `P4GM' 1.68e+00 1/57 (ftp://ftp2.sec.noaa.gov/pub/lists/pchan/G10pchan_5m.txt) GOES-10/P5 40-80 MeV protons `P41GM' 1.26e-02 1/62 (ftp://ftp2.sec.noaa.gov/pub/lists/pchan/G10pchan_5m.txt) *ACIS* Orbital fluence (since perigee) 1.01E+09 1/1 (http://asc.harvard.edu/mta/alerts/current.dat) EPHIN rates (cts/cm^2-s-sr) at last comm. OBSERVED RADMON limit or observed/limit ---------------------------------------- -------- ----------------------------- E1300 (2.64-6.18 MeV electrons): 0.5 1/20 P4GM (5-8.3 MeV protons): 1.3 1/231 P41GM (41-53 MeV protons): 0.1 1/85 (http://cxc.harvard.edu/cgi-gen/mta/Snap/snap.cgi?action=Latest) ACIS focal plane temperature -119.9 C, at dddZhh:mm:ss 208Z12:50:27 (http://asc.harvard.edu/acis/RT/acisrt.html)