LNLS radiological safety

improvements

Roberto Madacki

Brazilian Synchrotron Light Laboratory, LNLS,

Campinas city, State of Sao Paulo, Brazil

Synchrotrons in the world

http://www.srs.ac.uk/srs/SRworldwide/index.htm

South America/Brazil/

São Paulo state/Campinas

Amazon rain forest

(Amazonia)

Pantanal(wetland)

Rio de Janeiro

São Paulo

Campinas

Pantanal

Brasília

The capitol

Amazon

Foz do Iguaçu

Salvador

The LNLS centre

Ring building

Nano sci &

nano tech

Structural molecular biology

NMR

Bioethanol

Science and

Technology

Centre

LNLS-2

In the beggining

1997

1) 1.37 GeV storage ring

2) Transport line

3) 120 MeV electron LINAC

4) Beam lines

1

2

3

4

Machine and beamline

new shielding

1st type of operation

No roof, no Booster, non metalic

hutchs, personnel not allowed to stay

at experimental hall

Present type of operation

Improved shielding, Booster (500

MeV), personnel allowed to stay at

experimental hall during injections

Hutches

Optical components of a beamline

(in this case, without “optical hutch”)

Beamlines with optical hutches

Distribution of doses

around the ring

North side

West side

South side

East side

Inside machine

Jan

96

Jan

98

Jan

00

Jan

02

Jan

04

Jan

97

Jan

99

Jan

01

Jan

03

Jan

05

mSv/

month

Gamma TLD dosimeters

3º floor

Distribution of doses

(normalized) around ring

Monitoração gama - TLD - normalizada

hall - 1o.piso

0,00001

0,0001

0,001

0,01

0,1

1

10

jan/99 jan/00 jan/01 jan/02 jan/03 jan/04 jan/05 jan/06

EAT / LT CI

EntEdf / LT CI

Nor T ér / LT CI

P i per ack/ LT CI

Obser v/ LT CI

Copa/ LT CI

Chi cane/ LT CI

Sal a1T er / LT CI

Nor oeste/ LT CI

Gamma TLD dosimeters

1º floor

May 2001

1st operation

of the Booster

No roof

June 2003

Last concret block

assembled over

the Booster

End of 2004

Booster and storage ring

encased in a concrete tunnel,

and additional lead shielding

Beam line interlock system

Actuator sensor interface (ASi) – Pepperl Fuchs

Programmable Logic Controllers

Fail safe

Redundancy

Emergency buttons

Safety keys

Monitoring system

Area monitors

(gamma, neutrons)

Phantom

(gamma/TLD,

neutrons/albedo)

Survey meters

Thank you!

Questions?

The second machine

LNLS-2