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NAIRAS 3.0

Run Description 

The major update in NAIRAS version 3.0 is the development of a run-on-request (RoR) capability for computing (1) global atmospheric dosimetric quantities and (2) dosimetric quantities and radiation flux quantities along a user-input flight trajectory. In addition, the RoR version of the geomagnetic cutoff rigidity model includes an option to select either the TS05 or the T89 magnetospheric magnetic field model. The default is to use TS05 for dates forward of 1995 and T89 for dates prior to 1995. The user can override the default and select IGRF only, or IGRF plus either TS05 or T89 for the magnetospheric magnetic field component.

Simulation Time:

Simulation Start Time:
Simulation End Time:
Time Step in second:
Simulation Time Description:
Simulation Time Caveats:

Temporal Dependence (whether the outputs of the simulation code are time-dependent?): true

Regions:

Earth.Magnetosphere
Earth.NearSurface.Atmosphere
Earth.NearSurface.SouthAtlanticAnomalyRegion
Heliosphere.NearEarth

Simulation Domain :

Contacts :

List of Run Input Parameter Grouping and their associated properties :

Name Description Caveats Properties
Trajectory based 
Instantaneous, time integrated quantities (fluence), integral LET flux, along a user-specified trajectory
 There is a time limit. Otherwise, it would take too long.
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
User-provided trajectory file User-provided trajectory file 
trajectory file with the required format
DOS_TRAJ_PTS DOS_TRAJ_PTS 
Instantaneous dose quantities (at a point along the trajectory). 

Effective Dose: related to whole-body biological risk. In most cases, this is strictly a calculated quantity. 

Ambient Dose Equivalent: An operational proxy for Effective Dose defined by ICRP. This is a measurable quantity.

Tissue Equivalent:  A quantity related to tissue biological risk and defined by ICRP.  This is a measurable quantity.

Absorbed Dose in Tissue: The measure of energy per unit mass deposited by ionizing radiation in tissue. This is a measurable quantity.

Absorbed Dose in Silicon: This is a measurable quantity. 

If selected, the instantaneous dose quantities will be provided as output.
 
Value of 1 indicates the product is selected, 0 - not selected.
 0
DOS_TIME_INTEGRATED DOS_TIME_INTEGRATED 
Dose quantities integrated over a period of time.

Value of 1 indicates the product is selected, 0 - not selected.
 0
GCR_INT_LET_FLUX GCR_INT_LET_FLUX 
If selected, Integral GCR LET flux will be provided as output.

Value of 1 indicates the product is selected, otherwise 0.
 0
GCR_INT_LET_FLUENCE GCR_INT_LET_FLUENCE 
If selected, the GCR integral LET fluence (fluence above certain LET values) will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
TRP_INT_FLUX TRP_INT_FLUX 
Trapped integral proton flux will be provided as (part of) the model outputs if selected.

Value of 1 indicates the product is selected, 0 - not selected.
 0
TRP_INT_FLUENCE TRP_INT_FLUENCE 
Trapped integral proton fluence will be provided as (part of) the outputs.

Value of 1 indicates the product is selected, 0 - not selected.
 0
SEP_INT_FLUX SEP_INT_FLUX 
If selected, SEP integral proton flux will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
SEP_INT_FLUENCE SEP_INT_FLUENCE 
If selected, SEP integral proton fluences will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
GCR_DIFF_LET_FLUX GCR_DIFF_LET_FLUX 
If selected, GCR differential LET flux will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
GCR_DIFF_LET_FLUENCE GCR_DIFF_LET_FLUENCE 
If selected, GCR differential LET fluence will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
TRP_DIFF_FLUX TRP_DIFF_FLUX 
If selected, trapped proton differential flux will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
TRP_DIFF_FLUENCE TRP_DIFF_FLUENCE 
If selected, trapped proton differential fluence will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
SEP_DIFF_FLUX SEP_DIFF_FLUX 
If selected, SEP proton differential flux will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
SEP_DIFF_FLUENCE SEP_DIFF_FLUENCE 
If selected, SEP proton differential fluence will be provided.

Value of 1 indicates the product is selected, 0 - not selected.
 0
LET_bounds LET_bounds 
GCR LET lower bound selection. Suggested value: >1 MeV-cm^2/mg, >8 MeV-cm^2/mg). Rationale: these values are used by NASA KSC/Space-X to assess spacecraft single-event effects.
 5.0e-4 MeV-cm^2/mg 43.0 MeV-cm^2/mg
TIPE_channels TIPE_channels 
Lower Bounds of Trapped Integral Proton Energy Channels	in MeV. Suggested values of energy channels (>MeV): 45.0, 70.0, 75.0, 83.0, 86.0, 90.0, 93.0, 96.0, 100.0, 104.0, 110.0, 115.0, 124.0, 128.0, 132.0, 135.0, 140.0, 146.0, 149.0, 154.0, 162.0, 168.0, 172.0, 178.0, 182.0. Rationale: these values are used by NASA KSC/Space-X to assess spacecraft single-event effects.
 MeV 0.01 1750.
SIPE_channels SIPE_channels 
Lower Bounds of SEP Integral Proton Energy Channels in MeV. Suggested values of energy channels (>MeV): 30.0, 35.0, 45.0, 50.0, 55.0, 60.0, 65.0, 70.0, 75.0, 80.0, 85.0, 90.0, 95.0, 100.0, 105.0, 110.0, 115.0, 120.0, 125.0, 130.0, 135.0, 140.0, 145.0, 150.0, 155.0, 160.0, 165.0, 170.0, 175.0, 180.0, 185.0. Rationale: these values are used by NASA KSC/Space-X to assess spacecraft single-event effects.
 MeV 0.01 1.0e6
sd_units_dosimetric sd_units_dosimetric 
Unit of shielding depth for dosimetric quantities: g/cm2, cm, or mils.
sd_values_dosimetric sd_values_dosimetric 
Shielding depths.

Suggested value is 0,4,50 g/cm^2, where 0 g/cm^2 corresponds to no shielding, 4 g/cm^2 corresponds to an aircraft / spacecraft shielding, and 50 g/cm^2 corresponds to median shielding environment for ISS dosimeter locations.
 0 g/cm^2 100 g/cm^2
sd_values_fluence sd_values_fluence 
Comma-separated values of lower bounds for differential and integrated quantities.

Suggested value is 0,4,50 g/cm^2, where 0 g/cm^2 corresponds to no shielding, 4 g/cm^2 corresponds to an aircraft / spacecraft shielding, and 50 g/cm^2 corresponds to median shielding environment for ISS dosimeter locations.
 0 g/cm^2 100 g/cm^2
sd_units_fluence sd_units_fluence 
Unit of shielding depth for differential and integral flux and fluence quantities: g/cm2, cm, or mils.
GLOBAL_CALCULATION 
Global products
Name Label Description Caveats Units Default Value or Actual Value Valid Min Valid Max
GLOBAL_CALCULATION GLOBAL_CALCULATION 
If selected, the user will be provided with all global products: 1. Global maps of different types of doses at different altitudes, 2. Dose quantities along some given flight paths, 3. Cutoff rigidity map.


Value of 1 indicates the product group is selected, 0 - not selected.
 0
b_field_model b_field_model 
Choice of magnetic field model. Option to select either the TS05, T89, or IGRF magnetospheric magnetic field model. The 'Best Available' option selects TS05 model from 1995 and on, T89 between 1932 and 1994, and IGRF otherwise.
 TS05 model is available 1995-present only. BEST

Run Access Information :

Keyword(s) :

Linked to Parent Spase Resource(s) (example: SimulationModel) :

spase://CCMC/SimulationModel/NAIRAS/3.0

List of Publications Referencing this Run :

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