SHIELDOSE-2Q

Model API name: sd2q

Calculates, for arbitrary proton and electron incident spectra, the dose absorbed in small volumes of different detector materials for planar and spherical aluminium shield geometries. SHIELDOSE-2Q extends the shielding database behind the model to treat higher energy electrons and different shield and target materials.

Version: v1

Model developer:

National Institute of Standards and Technology (NIST)

QinetiQ

DH Consultancy

Model provision:

SPENVIS

Category: model/effects/radiation/tid

Keywords: dose, TID

Model flow

Model inputs
Model outputs

External Input: trappedParticleSpectrum

Trapped particle spectrum

Input	Value
Model name	ae8ap8 trapped-spectrum-ud trep_upload irene jorem-trapped \| trep
Quantity	energy_flux_spectrum

External Input: solarParticleSpectrum

Solar particle spectrum

Input	Value
Model name	creme-86-sep creme-96-sep esp-psychic-total-fluence sapphire-1-in-n-event-fluence sapphire-worst-event-fluence sapphire-total-fluence \| sep-spectrum-ud
Quantity	energy_fluence_spectrum

External Input: gcrSpectrum

GCR particle spectrum

Input	Value
Model name	iso_15390 creme-86-gcr creme-96-gcr \| nymmik-96-gcr
Quantity	energy_flux_spectrum

Input group: sd2q / multiplicity: one

Input	Description	Valid values	Default	Quantity
nuclearAttenuation	Nuclear attenuation flag	1=No nuclear attenuation for protons in shield 2=Nuclear attenuation, local charged-secondary energy deposition 3=Nuclear attenuation, local charged-secondary energy deposition and approx. exponential distribution of neutron dose	1	number

detector

Input	Description	Valid values	Default	Quantity
detectorMaterial	Detector material	1=Aluminium 2=Graphite 3=Silicon 4=Air 5=Bone 6=CaF2 7=GaAs 8=LiF 9=SiO2 10=Tissue 11=Water 12=Polyamide 13=Epoxy 14=Hafnium dioxide 15=Silicon dioxide 16=Indium Gallium Arsenide 17=Mercury Cadmium Telluride 18=Sodium Iodide 19=Magnesium Oxide 20=Germanium 21=Titanium 22=Iron 23=Tantalum 24=Tungsten 25=CW80 Alloy 26=Silicon NIEL 27=Gallium Arsenide NIEL	3	number

shield

Input	Description	Valid values	Default	Quantity
shieldDepthUnits	Shield thickness units (note: mm is equivalent Aluminium)	1=mils 2=g cm^-2 3=mm	3	number
doseModel	Shield thickness units		4	number
SSAT_DOSE	Shield thickness units		0	number
shieldComposition	Shield composition	1=Aluminium 2=Titanium 3=Iron 4=Tantalum 5=CW80 Copper-tungsten alloy 5=Al (1mm) + Ta bi-layer	1	number
shieldConfiguration	Shield configuration	1=Finite slab 2=Semi-infinite medium 3=Centre of spheres	3	number
shieldDepthValues	Shield depths/thicknesses	0=Default values 1=User defined	0	number
userShieldDepths	User defined depths. Used if shieldDepthValues==1		[0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20]	thickness

Name

Quantity

Variables

dose_depth_curve
Dose-depth curve

dose_depth

Qualifiers:
material: depends

Name	Units	Quantity	Variable qualifiers
thickness	Specified by shieldDepthUnits	thickness
source	(1)	text
absorbed_dose Dose in the specified detector material. axis 1: thickness axis 2: source	(rad)	absorbed_dose	material: Si

Model example


from nom_client.nom_client import NoMClient

nom_client = NoMClient("SD2Q model example", default_server_id="ext_rest_server", debug_output=True)

sapre_model = nom_client.get_model('sapre')
sapre_model.set_params(orbitType="GEN")
sapre_result = nom_client.run_model(sapre_model)


print("Running trapped model")
ap8ae8_model = nom_client.get_model('ae8ap8')
ap8ae8_model.set_external_input(external_input_name="trajectory", external_input=sapre_result)
ap8ae8_results = nom_client.run_model(ap8ae8_model)
print(ap8ae8_results)


print("Running GCR model")
creme_96_gcr_model = nom_client.get_model('creme-96-gcr')
creme_96_gcr_model.set_external_input(external_input_name="trajectory", external_input=sapre_result)
creme_96_gcr_results = nom_client.run_model(creme_96_gcr_model)
print(creme_96_gcr_results)


print("Running SEP model")
sapphire_total_fluence_model = nom_client.get_model('sapphire-total-fluence')
sapphire_total_fluence_model.set_external_input(external_input_name="trajectory", external_input=sapre_result)
sapphire_total_fluence_results = nom_client.run_model(sapphire_total_fluence_model)
print(sapphire_total_fluence_results)


print("Running SD2Q model")
sd2q_model = nom_client.get_model('sd2q')
sd2q_model.set_external_input(external_input_name="trappedParticleSpectrum", external_input=ap8ae8_results)
sd2q_model.set_external_input(external_input_name="solarParticleSpectrum", external_input=sapphire_total_fluence_results)
sd2q_model.set_external_input(external_input_name="gcrSpectrum", external_input=creme_96_gcr_results)
sd2q_model.set_params(detectorMaterial=1,
                      shieldDepthValues=1,
                      userShieldDepths=[0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20])
sd2q_result = nom_client.run_model(sd2q_model)
print(sd2q_result)

Model references

No references