June 5, 2008 TEGA_Mid-Temp_v4_r3.doc

TEGA Mid-Temp Soil Reconciled with block: tega_mid_temp_ramp/r29

Objectives:

Power on and perform the medium-temperature ramp on a soil/ice sample that had been previously heated via a low-temperature ramp. The purpose of this run is mainly to help decompose any possible oxidizing agent that might be on the soils. It also looks for gas release on the way up to the hold temperature. After warm up, we will collect background data for 30 minutes then begin the ramp. The ramp starts at -60 C and runs to + 175 C at 20 K/min followed by a 60 minute hold to measure the D/H ratio on any H2O that may be evolved.

This procedure also checks for leaks in the manifold, leaks in the oven, and checks the pressure in the supply tanks (simply by looking at the step rise in pressure with each pulse).

Note this run will be entirely at low emission.

Note also that this run has no mass-to-voltage calibration after the one done right after warm up.

Configuration:Low-temperature ramp has been completed previously. Constraints:

Review data from Checkout II to confirm dN numbers for regulation for in activity block and ramp segments.

Review: LT Results. Did the water evaporate enough or do we need to repeat LT? _ __

Gas(es) used: Carrier and Calibration. Mars atmosphere will also be collected through the TA Sample valve. Filaments used: 1 LOW Emission SW Version (386): V513 SW Version (EGA): V321 Sweep and hop mode version(s): MODE TABLE V117.

Super modes and Sweep modes used: Supermodes 1, 2, 3, 6, 7. and 10; Sweeps 37, and 38. Supermodes running in ramp: 6, 7 & 10

Note: TEGA is checked to see if TEGA is safed. If so, abort self to end activity

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June 5, 2008 TEGA_Mid-Temp_v4_r3.doc

TEGA Mid-Temp Soil

    1. Turn ON TEGA – Call TEGA_power_on
    2. 1.1.1. TEGA_MAIN1_PWR "ON"
    3. 1.1.2. TEGA_MAIN2_PWR "ON"
    4. 1.1.3. TEGA_MAIN3_PWR "ON"
    5. 1.1.4. Start the TEGA 386 FSW
  1. Pause 3 Minutes (collect engineering data at a high rate before turning down)
  2. Call Sequence 30A
    1. Turn on EGA
    2. 4.1.1. TEGA/FSW:EGA:Change EGA State
    3. 4.1.2. Restore the modes from EEPROM 0
    4. 4.1.3. EGA Commands:Restore Mode
  3. OPEN GEC Vent Valve
  4. 6. Warm up EGA: CALL tega_ega_emission_warmup (filament 1

6.1.1. Note: IF pass through was selected as HIGH, calibration set CANNOT equal 3

6.2. Calls tega_ega_prep, filament-16.2.1.1.Sets JPlate 0 to -107V 6.2.1.2.Sets Jplate 1 to -92V6.2.1.3.Start SM 1 pause 1 sec 6.2.1.4.Set MV 2800V Pause 1 sec6.2.1.5.Ion Pump ON Pause 1 sec6.2.1.6.Emission ON6.2.1.7.Pause 2 Minutes6.2.1.8.Stop SM 1

6.3. Change engineering transmit to 10 secs

6.3.1. IF pass thru = 1, emission current will change to HIGH

6.4. Call tega_ega_calibration_scans (emission low, cal set 3, 3200V)

6.4.1. MV exits at 3200V

6.5. Wait 1 Minute

6.6. Start SM 3

6.7. Pause 20 minutes

6.8. Stop SM 3

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TEGA Mid-Temp Soil

6.9. Pause 1 minute

6.10. Calls tega_ega_gain

6.10.1.1.1. Start SM 2

6.10.1.1.2. Pause 1 minute

6.10.1.1.3. Set MV 2600 – 3400V (1 minute per voltage)

6.10.1.1.4. Remain at 3200V

6.10.1.1.5. Stop SM 2

6.10.1.1.6. Run Sweep 38

EGA is warmed up and ready to go (54 mins)

Execute sequence 24A

  1. Set EGA manifold heater to +35 C
  2. Set TA manifold heater to -20 C
  3. Calibrate EGA: CALL tega_ega_calibration_scans (set = 3, exit=3200 V)
  4. Start Supermode 7: Soil volatiles (3200 V)
  5. Select Oven TA___
    1. Start Ramp (TWEAKABLE)
    2. 12.1. Ramp Segments File:_________________________________________
  6. Pause for pre_heater_delay (1980 sec; 33 minutes) - TWEAKABLE
  7. Run Heater Init (tega_init_heater_control)

Execute Sequence 24 B to increase readings on temperature regulation.

14.1.1. TA Manifold +65C

14.1.2. Plumbing 1 +35C

14.1.3. Plumbing 2 +35C

14.1.4. Transfer Tube +75C

14.1.5. EGA Plumbing +45C

14.1.6. EGA manifold to +35 C

14.1.7. Wedge Heater @ 10% duty cycle

  1. Pause for pre_sweep_1_delay (450 sec; 7.5 minutes) -TWEAKABLE
  2. Stop SM 7
  3. Start Sweep 38 (Sweep of carrier gas)

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June 5, 2008 TEGA_Mid-Temp_v4_r3.doc

TEGA Mid-Temp Soil

  1. Start Supermode 7: Soil volatiles (3200 V)
  2. Pause for pre_sweep_2_delay (2640 sec; 44.2 min) - TWEAKABLE
  3. Stop SM 7 immediate
  4. Run Sweep Mode 38 (on held gas)
  5. Start Supermode 7: Soil volatiles (3200 V)
  6. Pause for pre_cal_tank_delay (1150 sec; 19.2 minutes) - TWEAKABLE
    1. Start Cal Tank heater to 99 (= off) (TBR)(turn up engineering readings)
    2. 24.1. Set Cal Tank to Timer 1
  7. Pause for post_cal_tank_delay (2270 sec; 38 minutes) - TWEAKABLE
  8. Turn OFF Cal Tank Heater
  9. 27.Wait for ramp to complete (timeout _1192 – TWEAKABLE Ramp Ends as Follows:

27.1.1. SM 6 running

27.1.2. Carrier and Calibration Closed

27.1.3. Inlet & Outlet closed

27.1.4. TA Sample Closed

27.1.5. Bypass OPEN

Shut down

  1. Run tega_disable_heater_control (Turn all remaining heaters off)
  2. Close bypass valve
  3. Stop SM 6
  4. CLOSE GEC Vent Valve
  5. Turn off EGA: CALL tega_ega_off

32.1.1.1. EGA Shutdown:

32.1.2. Multiplier Voltage OFF

32.1.3. Wait 5 secs

32.1.4. Emission Off

32.1.5. Wait 5 secs

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June 5, 2008 TEGA_Mid-Temp_v4_r3.doc

TEGA Mid-Temp Soil

32.1.6. Ion Pump Control OFF

32.1.7. Activate Sequence 7A to turn the EGA OFF

33. Turn off TEGA: CALL tega_power_off

33.1.1. Turn off the third TEGA switch

33.1.2. Turn off the second TEGA switch

33.1.3. Turn off the first TEGA switch

33.1.4. FPGA Dump – Aker Valve state

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