Reconciled with block:

Objectives: The purpose of this block is to run Cal Gas and Carrier Gas. The Cal Gas will be run at both high and low emission to calibrate past (and future) TEGA runs. The run will emphasize getting data on CO2 isotopes and D/H ratio. We will also spend a few minutes collecting some data to help understand some peculiar things noticed in hops not being reproducible and we will spend some time conditioning channel 2 with O+ ions.

Configuration: Instrument is in its normal configuration.

Constraints:

Gas(es) used: Carrier and Calibration.

Filaments used: 1, High and Low Emission

SW Version (386): V513 SW Version (EGA): V321

Sweep and hop mode version(s): MODE TABLE V122.

Super modes and Sweep modes used: Supermodes 1, 2, 3, 4, 5, 11, 12, 13, & 15; sweeps 37, 38.

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

    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
    1. OPEN GEC Vent Valve
    2. Where do we do mode 37 sweep?
  3. Warm up EGA: CALL tega_ega_emission_warmup (filament 1, emission low, cal set 3)

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

- 1 -

July 5, 2008 TEGA_Cal-Gas_only_v1_r1.doc

TEGA Cal-Gas Run

6.2. Calls tega_ega_prep, filament-16.2.1.1.Sets JPlate 0 to -110V 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 ON6.2.1.6.Pause 30 seconds6.2.1.7.Emission ON6.2.1.8.Pause 2 Minutes6.2.1.9.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 ega_calibration_scans (Set =3, exit = 3200V)

6.5. Wait 2 Minutes

6.6. Start SM 3

6.7. Pause 20 minutes

6.8. Stop SM 3

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)

Measure residuals and get set up

  1. Start Supermode 4 (Atmosphere: Low Emission)
  2. Select Oven 3 (or any other oven that is not yet closed) Should be tweakable
  3. Open oven inlet valve (to vent manifold)
  4. Set EGA manifold heater to -10 C
  5. Set Cal Tank heater to +20 C
  6. Calibrate EGA: CALL tega_ega_calibration_scans (set = 3, exit=3200 V)
  7. Set TA manifold heater to 0 C (This heater is turned on after venting the manifold so we get two points at the same ambient pressure and different temperatures)
  8. Run Heater Init (tega_init_heater_control)

- 2 -

Note different temperatures below

Execute Sequence 24 B to increase readings on temperature regulation.

14.1.1. Plumbing 1 +35C

14.1.2. Plumbing 2 +35C

14.1.3. Transfer Tube +35C

14.1.4. EGA Plumbing -10 C

14.1.5. EGA manifold to -10 C

14.1.6. Wedge Heater @ 10% duty cycle

15. Pause 5 minutes for residuals at low emission

16. Switch to high emission

  1. Pause 5 minutes for residuals at high emission
  2. Open TA Sample valve (to watch onset of Cal Gas build up)
  3. Pause 1 minute
  4. Stop SM 4
  5. Start SM 1 (Quick Start)
  6. Pause 30 sec
  7. Close oven inlet valve
  8. Open bypass valve

Start flowing Cal Gas

  1. Start regulating Cal Gas at 35 mbar
  2. Pause 90 sec (Quick Start is used to get good data on rise time of gas to arrive)
  3. Stop SM 1
  4. Start SM 13 (Cal Gas with conditioning)
  5. Pause 30 min (this is twice as long as needed to get precision sufficient to meet requirements on CO2)
  6. Stop SM 13
  7. Start SM 15 (Hop Test)
  8. Pause 80 seconds
  9. Stop SM 15
  10. Start Supermode 4 (Atmosphere: Low Emission)
  11. Pause 2 min Change to low emission (to get a brief calibration at low emission)
  12. Pause 10 minutes (good enough for CO2 abundance, but not for isotopes; also watch for decay from high emission)
  13. Set parameter so hop and sweep modes do not control ionization level
  14. Pause 2 minutes
  15. Stop SM 4
  16. Run sweep mode 40 (Water Peaks)
  17. Run sweep mode 41 (Ar Peak)
  18. Start Supermode 4 (Atmosphere: Low Emission)
  19. Pause 2 min Change to Ionization Level 2 (to check on Ar++ and H3O+)
  20. Change ionization energy to level 2
  21. Pause 2 minutes
  22. Stop SM 4
  23. Run sweep mode 40 (Water Peaks)

- 3 - - 4 -

48. Run sweep mode 41 (Ar Peak)

Flow carrier gas to blow Cal Gas out of CML volume mainly to determine arrival time from manifold to EGA.

  1. Start SM 1 (Quick Start)
  2. Pause 30 sec
  3. Turn OFF Cal Tank Heater
  4. Stop regulating Cal Gas
  5. Begin regulation Carrier Gas at 35 mbar
  6. Pause 2 minutes
  7. Stop SM 1
  8. Start SM 4 (Atmosphere: Low Emission)
  9. Pause 10 minutes (get calibration for N2 and check residuals on CO2)
  10. Stop regulating Carrier Gas (to allow Carrier Gas to vent out of CML volume)
  11. Pause 5 minutes
  12. Stop SM 4
  13. Close TA Sample Valve

Shut down

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

65.1.1.1. EGA Shutdown:

65.1.2. Multiplier Voltage OFF

65.1.3. Wait 5 secs

65.1.4. Emission Off

- 5 -

65.1.5. Wait 5 secs

65.1.6. Ion Pump Control OFF

65.1.7. Activate Sequence 7A to turn the EGA OFF

66. Turn off TEGA: CALL tega_power_off

66.1.1. Turn off the third TEGA switch

66.1.2. Turn off the second TEGA switch

66.1.3. Turn off the first TEGA switch

66.1.4. FPGA Dump – Aker Valve state

- 6 -