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Data analysis tutorial. Applicable documents ROSINA USER MANUAL DFMS Instrument modes RTOF Instrument modes COPS Instrument modes EAICD.

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Presentation on theme: "Data analysis tutorial. Applicable documents ROSINA USER MANUAL DFMS Instrument modes RTOF Instrument modes COPS Instrument modes EAICD."— Presentation transcript:

1 Data analysis tutorial

2 Applicable documents ROSINA USER MANUAL DFMS Instrument modes RTOF Instrument modes COPS Instrument modes EAICD

3 ROSINA User manual The allowed ROSINA instrument mode configurations are specified in the following table:

4 Instrument Mode Documents Mode tables Detector Operation incl. data acquisition systems Data analysis basics

5 DFMS Modes and Sequences Numbering 0: GAS,COM,LOW 1: GAS,COM,LOW, background 2: GAS,COM,HIG 3: GAS,COM,HIG, background 5: ION,COM,LOW 6: ION,COM,LOW, background 7: ION,COM,HIG 8: ION,COM,HIG, background 9: NOI 0 to 49:Basic modes for switch on 50 to 99Bake-out and other technical modes 100 to 199Basic optimization and calibration modes 200 to 999Standard survey modes 1000 to 1999Modes specialized for scientific question 2000 to 9999Custom modes

6 DFMS Instrument modes ModeDescriptionFunctionTaskCoverEmissionGCU Reg.ELERes.ZoomDetMassesInt.Duration approx. Abs. Pos (eV) (s)approx Switch on/Switch off 1 Switch off, cover openOFFCOMn/a 5 Gas, MCP, LoEm, LR, switch onGASCOM LoEm 45Low1MCPSEL{9}128' 10 Standby, Subemission Bakeout Modes 50 Ion Source Bakeout 10'OFFBake out OFF n/a 13' 51 Ion Source Bakeout 60'OFFBake out OFF n/a 61' Inflight Calibration 150 Gas, MCP,MedEm, LR, medGCUGASCAL MedEmMedGCU45Low1MCPSEL{10}1020' 151 Gas, MCP,MedEm, LR, lowGCUGASCALMedEMLowGCU 45 Low 1 MCPSEL{10} 10 22'(FM 25.3.2010) 152 Gas, MCP, MedEM, HR, medGCUGASCAL MedEmMedGCU45High6.2MCPSEL{10}1022' 153 Gas, MCP, MedEM, HR, lowGCUGASCAL MedEmLowGCU45High6.2MCPSEL{10}10 154 Gas, MCP, LowEM, LR, medGCUGASCAL LowEmMedGCU45Low1MCPSEL{10}10 155 Gas, MCP, HiEM, LR, lowGCUGASCAL HiEmLowGCU45Low1MCPSEL{10}10 156 Gas, MCP, LowEM, HR,medGCUGASCAL LowEmMedGCU45High6.2MCPSEL{10}10 157 Gas, MCP, HiEM, HR,lowGCUGASCAL HiEmLowGCU45High6.2MCPSEL{10}10 160 Gas, CEM, MedEM, LR, medGCUGASCAL MedEmMedGCU45Lown/aCEMSEL{1}

7 DFMS mass tables Table of masses for the SEL parameter Entry # ModeM1M2M3M4M5M6M7M8M9M1 0 M1 1 M1 2 M13M1 4 M15M16M1 7 M18M19M20 0GCU442820132 1GCU- Mode 44452822201613124413212812913013113213313413666 2Water18 3CO24445282216131244 4Ne202220 5Xe13212812913013113213313413666132 6Cometary gas 182844 713C1213121312 8M2828 9CO2444528221644 10GCU- Mode 444528222016441321281291301311321331341366644

8 DFMS Sequences

9 RTOF Instrument modes 0: Other combinations of source,task,freq 1: STO,GAS,ETS,10kHz 2: STO,ION,ETS, 10 kHz 3: ORT,GAS,ETS_L, 10 kHz 4: ORT,ION,ETS_L, 10 kHz 5: BOT,GAI, both ETS, 10 kHz 6: STO,GAS,ETS,5 kHz 7: ORT,ION,ETS_L, 5 kHz 8: STO,GAS,ETS,2 kHz 9: ORT,ION,ETS_L, 2 kHz 0 to 49Basic modes for switch on/off 50 to 99 Bake out and other technical modes 100 to 499Basic optimization and calibration modes 500 to 999Standard survey modes 1000 to 1999Modes specialized for scientific questions 2000 to 9999Custom modes

10 RTOF Instrument modes M5011GStorage Source, Survey, ETS low sens M5031G/ 1L Ortho Source, Survey, ETS_L low sens M5041I/ 1L Ortho Source, ion, Survey, ETS_L low sens M5051Both Sources, Gas and Ion, Survey, ETS and ETS_L low sens M5061GStorage Source, Survey, ETS low sens, 5kHz M5081GStorage Source, Survey, ETS low sens 2kHz M5111GStorage Source, Survey, ETS med sens, 10 kHz M5131G/ 1L Ortho Source, Survey, ETS_L med sens M5151Both Sources, Gas and Ion, Survey, ETS and ETS_L med sens M5161GStorage Source, Survey, ETS med sens, 5kHz M5181GStorage Source, Survey, ETS med sens 2kHz

11 RTOF mass range Extraction frequency (kHz) Max flight time ( s) Upper addressMax. mass 1057.935000200 5119.472364840 21761066671800 d sacc T0

12 COPS 0:General for COPS Instrument / DPU action modes 1:NUD, OFS 2:NUD, AMB{ R N, R M } 3:RAM, OFS 4:RAM, AMB{ R N, R M } 5:BOT, OFS 6:BOT, AMB{ R N, R M } 0 to 49:Basic modes for switch on/off 49 to 99:Basic offset modes 100 to 299:Basic emission modes 300 to 499:Standard survey modes 500 to 999:Custom modes

13 COPS Offset M510180V0---F: xFilament offset M53---0180V0M: xMicrotips offset M550180V00 0F & M: xFil. & Microtips offset … Measurement modes M3120.9A180V 15uA /LR /MIon ---F: 1 (left) Mode(NUD,AMB {0,0}, EMI{1,0,2,0}) M3220.9A180VAuto---F: 1 (left) Mode(NUD, AMB {0,0}, EMI{1,0,1,0}) M3320.9A180V 100uA /HR /LIon ---F: 1 Mode(NUD, AMB {0,0}, EMI{1,0,0,0}) M3420.9A180V 15uA /LR /HIon ---F: 1 (left) Mode(NUD, AMB {0,0}, EMI{1,0,3,0}) M3520.9A180V 15uA /LR /LIon ---F: 1 (left) Mode(NUD, AMB {0,0}, EMI{1,0,1,0}) M3620.9A180V 100uA /HR /MIon ---F: 1 (left) Mode(NUD, AMB {0,0}, EMI{1,0,0,0}) ModeNude gaugeRam gaugeEmitter(s)Remark -- Filame nt current limit Filame nt Anode Grid V Filame nt Regulat ion value / Range Microtip s current limit microti ps Anode Grid V Microtip s Regulati on value / Range Microtips-Arrays / Filament-

14 COPS Calibration All measurements were performed with COPS mounted at CASYMIR (CAlibration SYstem for the Mass spectrometer Instrument Rosina) Reference gauge : Granville-Phillips Stabil-Ion (Series 370) ionization gauge Argon was used as the calibration gas for all measurements over a pressure range from ~5×10 -10 to ~1×10 -6 mbar All pressure values are normalized for Nitrogen and for 20°C. Operation At the beginning of operation the offset value of the electrometer is measured. This is repeated automatically every 24h, whereby the nude and the ram gauge offset measurements are shifted relative to each other by 12h.

15 Experiment Archive Interface Document EAICD File Naming Convention The file naming follows a strict rule. The filename consists of the following elements: DETECTOR_DATE_TIME_INSTRUMENTMODE.EXTENSION DETECTOR:MC, CE or FA; for DFMS OS or SS; for RTOF NG, RG; BG, SN or SR for COPS DATE:DATE from DPU Timestamp in the format YYYYMMDD YYYY (Year) MM (Month) DD (Day) TIME:TIME from DPU Timestamp in the format HHMMSSsss HH (Hour) MM (Minutes) SS (Seconds) sss (fractional milliseconds) INSTRUMENTMODE:Particular instrument mode according to HK in Science Packet EXTENSION:TAB (File extension) Example: CE_20141120_081042333_M0123.TAB DFMS CEM file recorded on 20. November 2014 at 08h 10m 42.333s during mode 123.

16 Dataset.cat Data set Overview ================= On March, 2, 2004, the Rosetta spacecraft was launched towards comet 67P /Churyumov Gerasimenko. Since then the ROSNA sensor has been tested and optimized for flight during several commissioning slots. All data so far from DFMS and RTOF concern either the in flight calibration gas or back- ground outgassing from Rosetta.Because of several uploads of new voltage settings the data cannot be compared between the different commissioning slots, neither in intensity nor in mass scale! The data can be used only for engineering purposes. The only data which can be used to evaluate the background pressure of Rosetta are the COPS data. Scientific data from DFMS and RTOF will only be available when Rosetta reaches the first asteroid. Parameters ========== DFMS and RTOF data contain neutral gas data as well as ion data. The data are raw, uncalibrated data. COPS contain pressure data of the background pressure and of some thruster firings from the nude gauge. Calibration =========== COPS data are calibrated. However, the calibration factor has been determined for Nitrogen gas, and may not be appropriate for the outgas- sing of Rosetta. Because the main outgassing component is unknown the correct factor to be used is also unknown. DFMS and RTOF data are uncalibrated and will remain uncalibrated because they have no scientific value.

17 DFMS Data


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