From freja-info-mgr@plasma.kth.se Thu Feb 25 18:22 MET 1993 X-Listname: Freja Project Information mailing list Date: 25 Feb 1993 17:27 +0000 (GMT) From: LLOYD@skisas.usask.ca Subject: Freja Operations, Week starting 93-03-01 To: freja-info@plasma.kth.se X-Envelope-To: freja-info@plasma.kth.se X-Vms-To: IN::"freja-info@plasma.kth.se" Content-Transfer-Encoding: 7BIT Freja Scientific Operations, March 1-7, 1993 ============================================ PI-group in charge: F3C, Brian Whalen, (Actual work done by Nick Lloyd) Address all correspondence to : lloyd@skisas.usask.ca Hello everybody, This dreaded task has finally fallen into my lap. The major task for the first week of March is to make sure we have good coordination with the EISCAT campaigns. I am confused as to whether the EISCAT campaign is still going ahead in March. My diary indicates that the Eiscat campaign will continue from March 1 to March 7 from 17:00 to 23:00 UT each day so I assume it is. David Steele will stop ground based observations by March 1st. I dont know about the status of Prof G. Haerendel's observations. F3C does not yet actively participate in Burst mode so I dont have a good feel for the pros and cons of this mode for each instrument. My general impression is that when ground coordination is required the preferred mode is "standard" so there are no gaps in the data record, (which would occur in burst mode passes). Hence I have followed the lead of Bengt and made all of the passes over Esrange which are possibly involved in Eiscat campaigns to be run in "standard" mode. I have rescheduled the burst mode to occur on an auroral midnight pass, where both Prince Albert and Esrange can see the instrument. This should allow the F1 team to see the burst occur in real-time. The burst should occur very close to the peak geomagnetic latitude of Freja (according to the Characteristic plots). The burst mode dump is scheduled to occur towards the end of the Esrange pass when Freja is at lower geomagnetic latitudes. I selected a special mode for this pass where everyone is studying field aligned currents. I thought that F2 might want to trigger on field aligned currents. I shall leave the trigger details to F1 (is that okay F1?) I have placed quite a few special studies into the schedule. I suspect most instruments are quite able to support all the different special studies using their standard modes. However I thought experimentors would like to know what other experiments (like F3C which must duty cycle between different types of observation) will be focussing on. The choice of special orbits is fairly random. I have selected Ion acceleration, field aligned currents and cold ion heating to run on one high latitude pass each day. Langmuir waves, lower Hybrid waves and solitary waves duty cycle one high latitude pass a day, repeating every 3 days. If any one objects to this please let me know. I have also included a spacecraft wake mode on the first, low latitude pass over Esrange. I thought interested experiments might try and do some wake measurements. Of course if you dont want to then just do your own thing. I assume F5 is still off the air so I have not tried any "imager footprint" special studies. I hear that Sandy is trying to power up the imager next week, so I take this opportunity to wish him good luck and mention that I have my fingers crossed. If all goes well then if Sandy has any special requests I suggest we all try our best to accomodate him so he may get the most from his instrument. Best wishes, Nick Lloyd. ------------ General: a) Common Burst mode once per day. Timed or triggered. (Dump on same passage) b) No High TM rate for the time being. d) Survey mode once per week. (Dump at low lat Esr pass) Special studies: a) Field Aligned Currents (FAC) b) Ion Acceleration (IA) c) Cold Ion Heating (CIH) d) Langmuir Waves (LW) e) Lower Hybrid Waves (LHR). f) Solitary Waves (SW). g) Spacecraft Wake studies (WAKE) (low latitude) In the list below three to four passes for special studies and one for Burst mode have been selceted. The other labled Standard, are for individual science, dumping, testing. NOTE that the dumping of data must be made on the same passage, otherwise the data will be lost at power off for some of the experiments. I suggest that the last 12 min of the Burst passage is reserved for the dumping of data. Experiments for which FOC has not received any specific requests, will be run in standard science mode by default. The cancellation order list includes three orbits per day. The order is that the first listed orbit should be deleted first. Any other orbits not on this list cannot be deleted. DATE Orbit Start UT Stop UT Mode ---- ----- -------- ------- ---- Mar 1 1926 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump EOS LOS 1927 PASS AOS PASS LOS Special IA, Ion Acceleration. 1928 PASS AOS PASS LOS Special LW, Langmuir waves 1929 PASS AOS PASS LOS Special CIH Cold Ion heating 1930 PASS AOS PASS LOS Standard 1931 PASS AOS PASS LOS Standard Cancellation order: 1921, 1931, 1930 ------------------------------------ Mar 1 1934 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 1935 ESS AOS ESS LOS Standard Esrange Campaign 1936 ESS AOS ESS LOS Standard Esrange Campaign 1937 ESS AOS ESS LOS Standard Esrange Campaign 1938 PASS AOS ESS LOS Standard Mar 2 1939 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS 1940 PASS AOS PASS LOS Special IA, Ion Acceleration. 1941 PASS AOS PASS LOS Special LHR Lower Hybrid waves. 1942 PASS AOS PASS LOS Special CIH Cold Ion heating 1943 PASS AOS PASS LOS Standard 1944 PASS AOS PASS LOS Standard Cancellation order: 1934, 1944, 1943 ------------------------------------ Mar 2 1947 ESS AOS ESS LOS Special, WAKE, Spacecraft wake. 1948 ESS AOS ESS LOS Standard Esrange Campaign 1949 ESS AOS ESS LOS Standard Esrange Campaign 1950 ESS AOS ESS LOS Standard Esrange Campaign 1951 PASS AOS ESS LOS Standard Mar 3 1952 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS 1953 PASS AOS PASS LOS Special IA, Ion Acceleration. 1954 PASS AOS PASS LOS Special SW, Solitary waves. 1955 PASS AOS PASS LOS Special CIH Cold Ion heating 1956 PASS AOS PASS LOS Standard 1957 PASS AOS PASS LOS Standard Cancellation order: 1947, 1957, 1956 ------------------------------------ Mar 3 1960 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 1961 ESS AOS ESS LOS Standard Esrange Campaign 1962 ESS AOS ESS LOS Standard Esrange Campaign 1963 ESS AOS ESS LOS Standard Esrange Campaign 1964 PASS AOS ESS LOS Standard Mar 4 1965 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS 1966 PASS AOS PASS LOS Special IA, Ion Acceleration. 1967 PASS AOS PASS LOS Special LW, Langmuir waves 1968 PASS AOS PASS LOS Special CIH Cold Ion heating 1969 PASS AOS PASS LOS Standard 1970 PASS AOS PASS LOS Standard Cancellation order: 1960, 1970, 1969 ------------------------------------ Mar 4 1973 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 1974 ESS AOS ESS LOS Standard Esrange Campaign 1975 ESS AOS ESS LOS Standard Esrange Campaign 1976 ESS AOS ESS LOS Standard Esrange Campaign 1977 PASS AOS ESS LOS Standard 1978 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS Mar 5 1979 PASS AOS PASS LOS Special IA, Ion Acceleration. 1980 PASS AOS PASS LOS Special LHR Lower Hybrid waves. 1981 PASS AOS PASS LOS Special CIH Cold Ion heating. 1982 PASS AOS PASS LOS Standard 1983 PASS AOS PASS LOS Standard Cancellation order: 1973, 1983, 1982 ------------------------------------ Mar 5 1986 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 1987 ESS AOS ESS LOS Standard Esrange Campaign 1988 ESS AOS ESS LOS Standard Esrange Campaign 1989 ESS AOS ESS LOS Standard Esrange Campaign 1990 PASS AOS ESS LOS Standard 1991 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS Mar 6 1992 PASS AOS PASS LOS Special IA, Ion Acceleration. 1993 PASS AOS PASS LOS Special SW, Solitary waves. 1994 PASS AOS PASS LOS Special CIH Cold Ion heating 1995 PASS AOS PASS LOS Standard 1996 PASS AOS PASS LOS Standard Cancellation order: 1986, 1996, 1995 ------------------------------------ Mar 6 1999 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 2000 ESS AOS ESS LOS Standard Esrange Campaign 2001 ESS AOS ESS LOS Standard Esrange Campaign 2002 ESS AOS ESS LOS Standard Esrange Campaign 2003 PASS AOS ESS LOS Standard 2004 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS Mar 7 2005 PASS AOS PASS LOS Special IA, Ion Acceleration. 2006 PASS AOS PASS LOS Special LW, Langmuir waves 2007 PASS AOS PASS LOS Special CIH Cold Ion heating 2008 PASS AOS PASS LOS Standard 2009 PASS AOS PASS LOS Standard Cancellation order: 1999, 2009, 2008 ------------------------------------ Mar 7 2012 ESS AOS ESS LOS Special, WAKE, Spacecraft Wake 2013 ESS AOS ESS LOS Standard Esrange Campaign 2014 ESS AOS ESS LOS Standard Esrange Campaign 2015 ESS AOS ESS LOS Standard Esrange Campaign 2016 PASS AOS ESS LOS Standard 2017 PASS AOS Special FAC, Field Aligned Currents. ESS AOS +30s Triggered Burst enable (auroral zone) ESS LOS -720s Burst disable and Dump ESS LOS Mar 8 2018 PASS AOS PASS LOS Special IA, Ion Acceleration. 2019 PASS AOS PASS LOS Special LHR, Lower Hybrid waves 2020 PASS AOS PASS LOS Special CIH Cold Ion heating 2021 PASS AOS PASS LOS Standard 2022 PASS AOS PASS LOS Standard Cancellation order: 2012, 2022, 2021 ------------------------------------