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INSTITUTE FOR ADVANCED STUDIES Claudio Federico Jan/2016 1
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INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

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Page 1: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

INSTITUTE FOR ADVANCED STUDIES

Claudio Federico

Jan/2016

1

Page 2: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Research group for studies of the effects of

ionizing radiation on devices and materials for

aerospace use

Main lines of activity:

• Effects of cosmic radiation on electronic devices

and crew;

• Computer simulation and modeling of cosmic

radiation interaction;

• Measurement of cosmic radiation on aircraft and

ground.

Page 3: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

3

Cosmic Radiation dose measurements – Galactic

and Solar:

Two main points:

1 - The cosmic-ray can result in accumulated

dose that may exceed the annual dose limit

for aircrews.

2 - Another concern is the radiation effects on

devices and material used in aircraft due to

possibility of fails in specific devices, caused

by cosmic rays induced neutrons, may

compromise the safety of the aircraft

Page 4: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

RADIATION and the International Space Station: recommendations to reduce risk,

Washington, DC: National Academy Press, 2000.

• Since 1975

Effects on satelites:

AMAS -180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180

-90

-60

-30

0

30

60

90

Lat

itud

e (g

raus)

Longitude (graus)

2,240E+04

2,309E+04

2,378E+04

2,516E+04

2,793E+04

3,345E+04

3,898E+04

4,450E+04

5,003E+04

5,555E+04

6,108E+04

6,660E+04

Campo magnético terrestre a uma altitude de 12 km, calculado

utilizando o modelo geomagnético IGRF2011

( V

alo

res e

m n

T )

• Permanent or transitory deviations in the electrical

parameters or even complete failure of the systems

Page 5: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Effects on the aircrafts: • About aircraft embedded systems

• 7 de outubro de 2008, um Airbus A330-303 operado pela Qantas

Airways, a caminho de Perth para Cingapura, a 37.000 pés

Page 6: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

6

Radiation doses

Bartlett, 2004

About aircrew...

Annual limitation for public !

Especial concern about female crew.

Page 7: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

The purpose of this laboratory is

the research and development of

technological applications of the

ionizing radiation, particularly in

space, aeronautics and defense.

LRI contains: Two 60-Co

irradiators (operational), some

neutron sources, and we are

including a high energy neutron

source for avionics systems

tests..

LRI – Laboratório de Radiação Ionizante

(Ionizing Radiation Laboratory)

LRILaboratório

de

Radiação

Ionizante

LRILaboratório

de

Radiação

Ionizante

LRILaboratório

de

Radiação

Ionizante

Page 8: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

8

Measurements of ambient dose

equivalent on flight

Learjet VU-35

Page 9: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

9

Some measurement missions

SAA

minimum

field

Page 10: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Some measurements

10

Bonner spheres spectrometer Long-counter

FH40-G(10) with probe

FHT-762

PMMA and PEAD/Pb spheres with dosimeters TEPC

Phanton

Page 11: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

11

Ground measurements

Page 12: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Ground neutron measurements

12

Page 13: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Some results

13

10-8

10-7

10-6

10-5

10-4

10-3

10-2

10-1

100

101

102

0.002

0.004

0.006

0.008

0.010

0.012

Flu

xo

de

utr

on

s e

m le

targ

ia (

n/c

m2.s

)

Energy (MeV)

2400 m

1856 m

680 m

25 m

10-8

10-7

10-6

10-5

10-4

10-3

10-2

10-1

100

101

102

103

104

105

0.000

0.002

0.004

0.006

0.008

0.010

0.012

Flu

xo

de

utr

on

s e

m le

targ

ia (

n/c

m2.s

)

Energia (MeV)

Medido

Calculado pelo EXPACS

10-9

10-8

10-7

10-6

10-5

10-4

10-3

10-2

10-1

100

101

102

103

104

105

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

Flu

xo

de

utr

on

s e

m le

targ

ia (

n/c

m2.s

)

Energia (MeV)

Medido - nível do mar

Goldhagen et all - nível do mar em 37oN, 76

oO

0 500 1000 1500 2000 2500

0

1

2

3

4

5

6

7

8

9

10

11

12

13

H*(

10

) -

(pS

v/s

)

Altitude (m)

Térmico

Epitérmico

Evaporação

Rápido

Total medido

Total estimado (EXPACS)

Kowatari et al (2005)

.

Page 14: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

14

Cosmic rays computational simulation

Page 15: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

15

Some missions results

Page 16: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

16

Desenvolvimentos e resultados Estimativa do perfil de dose nas regiões da América do Sul e

Caribe

Amostra:

• espaço aéreo RVSM da região CAR/SAM

• período de 07 a 20 de março de 2009

• 53163,4 h de voo, distribuídas em treze níveis de voo, de 29000

pés (8839 m) a 41000 pés (12496 m) e registradas

separadamente por tramo entre fixos de rota.

Cálculos:

• contabilizados 3098 tramos

• doses efetivas calculadas, para cada nível de voo, nas

situações de máximo e mínimo solar

• código CARI-6 (80548 cálculos efetuados).

-120 -60 0

-80

-40

0

Lat

itud

e (N

)

Longitude (L)

16

Page 17: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

17

Desenvolvimentos e resultados Estimativa do perfil de dose nas regiões da América do Sul e

Caribe

• Cálculo da taxa de dose efetiva média por tramo, ponderando pelo

número de horas de voo em cada um dos 13 níveis.

• Redução de 40261 para 3097 registros de taxa de dose efetiva

média por tramo, para cada potencial solar.

0 1 2 3 4

0,0

0,2

0,4

0,6

0,8

1,0

1,2

1,4

1,6

1,8

Fre

quên

cia

rela

tiva

de

per

man

ênci

a em

tra

mos

(u.a

.)

Intervalo de taxa de dose efetiva (Sv/h)

Dados

Gaussiana ajustada

0 1 2 3 4

0,0

0,2

0,4

0,6

0,8

1,0

1,2

Fre

quência

rela

tiva d

e p

erm

anência

em

tra

mos

(u.a

.)

Intervalo de taxa de dose efetiva (Sv/h)

Dados

Gaussiana ajustada

17

Page 18: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

18

Desenvolvimentos e resultados Estimativa do perfil de dose nas regiões da América do Sul e

Caribe

E = Ė . ∆t

yxz .

Ē máx. sol. = 1,45 mSv

Ē mín. sol. = 1,67 mSv

Distribuição produto-normal

Fre

qu

ência

rela

tiva

1 mSv

96,85 % a 99,12 %

Fre

qu

ência

rela

tiva

3,15 % a 0,88 %

99,9 %

Fre

qu

ência

rela

tiva

2,31 mSv a 2,73 mSv

18

Page 19: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

Example of application of UAVs:

Validation of the simulation results

More recently: technical support on simulation and

measurement of radioactive plume on accident events.

Page 20: INSTITUTE FOR ADVANCED STUDIES - wireless.ictp.itwireless.ictp.it/bariloche/Slides/ClaudioFederico.pdf · Claudio Federico Jan/2016 1 . Research group for studies of the effects of

END

Thank you !

20

[email protected]