Commissioning of the ASTA Photoinjector Laser System Jamie Santucci Advanced Accelerator R & D Fermi National Accelerator Laboratory DOE LSO Workshop, September 11, 2013
Outline Fermilab ASTA Photoinjector Laser Laser System Control System Safety System
Fermilab Overview DOE Particle Physics Energy, Intensity, Cosmic Tevatron Neutrino Experiments Muon Campus IARC LHC R&D Dark Energy & Dark Matter AAR&D ASTA
ASTA Overview e- LINAC (ILC type) MeV GeV beams (5-50MeV / 300-1500MeV) High rep-rate (1-3MHz 1.3GHz, 1-5Hz CW) High brightness (peak & average) Extremely stable beam (spatially & temporally) Storage ring (IOTA) (50-100MeV/e-, 2.5MeV/p) Photoinjector: 3ps/3MHz/1ms/5Hz, 5-50MeV e- SRF (Superconducting RF accel. cavities) Experiment Areas (Low E & High E)
ASTA Campus
Injector Overview
Drive Laser System illab Injector Laser Lab Laser System Fiber Seed DPSS Amps 4HG
Drive Laser System -illab 500ft 2 Class 10,000 Cleanroom Climate Controlled to 1 degf rms 16ft Main Table, 12ft Secondarys
Drive Laser System Main Table
Drive Laser System -Overview
Drive Laser System -Seed YbFA Seed Calmar Lasers inc. 1053nm Fiber Laser 1.3 GHz Mode-locked <0.2 ps jitter 81 MHz Pulse Picked Fiber Amplified 500 mw to Free-space
Drive Laser System -Amps Nd:YLF DPSS Amps DPMP Cavity 1 uj DP2P Stations 9 uj NG-CEO 180 uj
Drive Laser System -4HG 4HG BBO: IR Green 527nm 80 uj BBO: Green UV 263nm 25uJ
Drive Laser System -Pulsetrain 5% rms Amplitude Jitter 300us Train Attained Working Towards 1ms
ACNET Analog Control System Settings Readbacks Digital Control Status Parameters Scaling Datalogging Sequencing S&R
Synoptic Laser Interface Controls GUI
Synoptic Laser Interface (cont.) GUI Subpages
Interlocks Class III & IV Enclosures Administrative Controls PPE Laser Safety System
Laser Safety System (cont.) Interlocks FNAL Accelerator ESS Hardware Loops A&B Software Loops A&B Safety Rated PLC Siemens Module 315F Laser Lab, Transport, Cave
Laser Safety System (cont.) Logic Diagram Overviews & Status
Laser Safety System (cont.) Controlled Access Storeroom Lock Unique Keys Laser PS Contactor Fire Key
Laser Safety System (cont.) Class IV enclosures (NHZ) Laser lab Locked Metal Box Sealed Penetrations Transport GV & Vacuum Switch Cave 9WX Optics Box Locks e- Beam Vacuum System
Laser Safety System (cont.) IR DPSS Containment
Laser Safety System (cont.) 4HG and UV Containment
Laser Transport Polycarbonate Stainless Steel Vacuum ABS & Aluminum
Laser Safety System (cont.) Administrative Controls ES&H Training IIIb & IV Accounting SOP With Sign-offs OJT With Sign-offs Locks and Safety Screws Signage
VISIBLE AND/OR VISIBLE INVISIBLE AND/OR LASER INVISIBLE RADIATION LASER AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION RADIATION AVOID EYE OR SKIN CLASS 4 LASER PRODUCT FNAL/AD/NML LASER ROOM IN ANY EMERGENCY DIAL 3131 PROPER EYE PROTECTION REQUIRED EXPOSURE LASER TRAINING TO DIRECT AND EYE OR EXAM SCATTERED REQUIRED RADIATION PROPER EYE PROTECTION REQUIRED POWER/ LASER MEDIUM REQ. OD λ ENERGY Calmar/NG Yb fiber/ylf 6 1030-1060nm 300μJ Dilas Diodes Diode 6 808 nm 200W 2HG BBO 3.8 527 nm 40μJ 4HG BBO 7.2 263 nm 10μJ
Laser Safety System (cont.) PPE Laser Eyewear Clothing Requirements Face Shields Gloves Misc. Electrical Kentek C505C Newport UV gloves
THANK YOU NML Contacts and References: Fermilab, http://www.fnal.gov/ ASTA, http://asta.fnal.gov/ Laser Jamie Santucci, santucci@fnal.gov Jinhao Ruan, jhruan@fnal.gov Safety System Randy Zifko, rmzifko@fnal.gov Controls Chip Edstrom, edstrom@fnal.gov Synoptic, http://synoptic.fnal.gov/
Backup Slides Synoptic Architecture Fermilab 3 Frontiers ASTA Parameters ASTA Overview Laser / e- Beam Parameters
The Synoptic Architecture
Fermilab Three Frontiers Energy Intensity Cosmic Accelerator Stewardship
ASTA Parameters (a) Optical pulse stacking methods or field-emission sources could lead to smaller bunch separation. (b) normalized rms values for an uncompressed beam (c) nominal value corresponds to a 3.2-nC compressed bunch without operation of CAV39
ASTA Overview (cont.)
Laser / e- beam parameters Transverse spot size available: 0.2-6mm Bunch = 3ps (rms) 1/fb = 3MHz 1/fmac = 5Hz Charge = 0.05-3.2 pc
Laser Safety System (cont.)