- Intro
- Hazard Summary
- Pretty big table on page 5. Worth a glance
- Lists general types of hazards, what they could do, how we're controlling for them, how likely they are to happen, and severity/risk
- Definition of Risk on page 9
- Risk is a function of probability and severity (high severity + low probability = low risk, high + high = high, low + low = low)
- Pretty big table on page 5. Worth a glance
- LAF Description
- LAF Subsystems
- Copper linac through the FEE, FACET-II facility, ESA, LCLS II RGD
- Copper
- 2856 MHz, room temp, klystrons, SLED cavities
- 25 feet under gallery
- Gallery has klystrons, SLED cavities/modulators, power supplies, cooling water systems
- 31 sectors (0 in the west, 30 in the east)
- Each sector ~100 m long
- Linac West (S0 - 9)
- decommissioned and removed for superconducting LCLS-II (currently under construction)
- Linac Middle (S10 - 19) and Linac East (S20 - 30) separated by concrete shielding wall and personnel passageway maze
- Can be operated independently
- But share control and water cooling systems
- People can't be in Linac East if Linac Middle is running
- prompt radiation risk exposure
- Max pulse rate is 120 Hz
- 30 Hz if 120 isn't needed or to reduce power consumption
- Linac East and Middle can be operated at different rates
- Usually 30 Hz for FACET-II (the usually is suspicious here considering we haven't run it yet)
- Usually 120 Hz for LCLS
- Linac Middle
- Max energy of ~16 GeV to FACET-II
- Positron beam coming in the future when they build a damping ring
- Not designed to go above 30 Hz
- Linac East
- Max energy of ~18 GeV to Undulator Complex (has two undulator systems)
- Generate coherent x-ray beams that can be sent to the NEH and FEH
- Has previously sent beam to ESA, but that's currently decommissioned
- Could be brought back if needed
- Max energy of ~18 GeV to Undulator Complex (has two undulator systems)
- LCLS-II Injector
- Normal conducting laser-driven photocathode gun (186 MHz) followed by a buncher cavity
- Currently set up to deliver electrons to a Faraday cup for commissioning without additional acceleration
- There's currently a concrete shielding wall immediately downstream of the Faraday cup
- Will be removed before the injector is connected to the superconducting linac
- It's currently a Radiation Generating Device (not an accelerator)
- Will be reclassified when it's connected to the linac
- Linac West
- LCLS-II injector through Sector 9
- Currently under construction
- LAF Subsystems
- Hazard Analysis
- ASE
- QA
- Post Ops
Overview
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