a plc-based laser safety system at slac...a plc-based laser safety system at slac jeff corbett,...
TRANSCRIPT
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A PLC-based Laser Safety System at SLAC
Jeff Corbett, Perry Anthony and Mike Woods SLAC National Accelerator Laboratory
10th Annual DOE Laser Safety Officer Workshop August 19-21, 2014
Lawrence Livermore National Laboratory
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Outline
• A brief history of SLAC • Electron gun test laboratory • Laser bay safety system • Gun vault safety system • Documentation • Some Lessons learned
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1962: 3km Linear Accelerator Construction
LINAC Section Hansen, Varian brothers
Circa 1964
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Klystron Gallery
S-band accelerator
1000 segments
250 klystrons
Accelerator Structure
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View looking East View looking West
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6
Progressive Linac Applications
Klystron Test Lab
• synchrotron radiation • SLC
• B-factory • LCLS
• e+-e- storage rings • fixed target
• Cosmology and the LCLS-II
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LCLS-I and LCLS-II from above
4 GeV SC linac
MHz NC gun
15 GeV existing linac
Far Experimental Hall
Near Experimental Hall One tunnel, 2 Undulators
Photocathode gun
: Class 4 laser lab
Gun test lab
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The ASTA Photocathode Gun Test Laboratory
Ti:Sapphire Laser LCLS Research Electron Gun
Diagnostics
Laser Hall
Gun Vault
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The ASTA Laser Laboratory
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Hazard Sign and Visitor Policy
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Eyewear Storage
Ti:Sapphire + Harmonics
Maintenance Mode
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The Master Control Panel
Touchscreen Guts
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Laser Safety System - Initial Acceptance Test
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Class 4 Maintenance Mode
Emergency Off
defeatable interlocks
Regen labels
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Googles Off Googles On
Maintenance Mode: Green Blockers
‘Wear thy GoGGles’
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Transport Shutters leading to Gun Vault
Enclosed, labeled, tool
Dual shutters
Lockout capacity
Labels cover bolts
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Legend Elite Regen • 2 stretchers • 1 compressor
Vitara Oscillator
Laser Safety Curtain
Evo
lutio
n
Ho
llo
w F
iber
status
EO
EO
S1
S3
T1 T2
Eyewear Storage
RFID
Bypass for Exit
visible continuum
THG
Master Control Panel status
Gu
n V
ault
EO
Recap of the Laser Bay Break-glass
VERDI 5W
2.5W
UV
Co
mp
res
sio
n
SPIDER
0.5W, 800nm
5W, 800nm
50mW, 1ps
25 feet
EO
S2
S4
femtosec
compress
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Room Exit Bypass (15 sec)
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Photocathode Gun
EO
T2 T1
Optical bench
status
Photocathode Gun Vault
Bypass for Exit
RFID
LSS Gate
Bre
ak-glass
EO
PP
S P
ane
l
PPS Gate
status
EO
Master Control Panel
Lase
r H
all
Class 4 UV
4’ concrete
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Electron Gun Vault Entrance
Badge for Entry
Radiological control
Laser Safety Gate
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Laser Safety in the Gun Vault
Transport Shutter Control Panel
Photocathode Electron Gun
Enclosed compressor, tripler, etc (not Class 1)
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Main Documents, Authorizations, Inspections
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Laboratory Personnel Records
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Thank you!