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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