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Photon Systems Overview. John Arthur. LCLS Photon Systems. Includes LCLS x-ray and laser groups X-ray Transport, Optics and Diagnostics (XTOD) managed by LLNL ( Richard Bionta ) X-ray Endstation Systems (XES) managed by SLAC ( Stefan Moeller ) LCLS Laser Systems managed by SLAC ( TBD ).

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Lcls photon systems
LCLS Photon Systems

Includes LCLS x-ray and laser groups

  • X-ray Transport, Optics and Diagnostics (XTOD)

    • managed by LLNL (Richard Bionta)

  • X-ray Endstation Systems (XES)

    • managed by SLAC (Stefan Moeller)

  • LCLS Laser Systems

    • managed by SLAC (TBD)


Recent developments affecting all x ray systems and conv facilities
Recent Developments affecting all X-ray Systems (and Conv. Facilities)

  • Suggested Plan for Offset Mirrors in Front End

  • Suggested Redesign of Far Experimental Hall

These ideas are in the development stage, not yet official

But they look very promising


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Offset mirrors in the FEE Facilities)

Upstream of all LCLS experiments

FEL radiation reflected (>95%)

SiC 1.5mrad

SiC 1.5mrad

24mm offset

Background from high harmonics and Bremsstrahlung not reflected


Photon systems overview 1288333

Proposed new layout of FEE Facilities)

3 ft concrete

4 ft Fe

4 ft Fe

Mirrors

GAS ATTEN

STOP

COLLIM

STOP

SOLID ATTEN

15m

11.6m


Advantages of offset mirrors
Advantages of Offset Mirrors Facilities)

  • Keep high-energy radiation out of experiments

    • Eliminate troublesome background

    • Note: nearly all synchrotron beamlines use some offset

  • Keep high-energy radiation farther away from experimenters

    • Reduce shielding requirements, make hutches more easily accessible


Photon systems overview 1288333

Redesign of FEH Facilities)

Office and shop space

(Vac., Mech.,Electr.)

Experimental hutches

(7x8m)

TOO SMALL

FEL beams


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Possible new FEH layout Facilities)

Wider main tunnel

Reduced corridor space

Large hutches

Slightly higher cost

8x10 m

10x10 m

8x10 m


Xtod scope
XTOD Scope Facilities)

  • Transport the x-ray beam, in vacuum, to all the experimental stations

  • Condition the x-ray beam, with attenuators and apertures

  • Analyze the x-ray beam, with sophisticated diagnostics


Xtod optics
XTOD Optics Facilities)

NEH

Main Elements

Flipper Mirror

Front End Enclosure

Diagnostics

Direct Imagers

Indirect Imager

Total Energy

Spectrometers

Photon

Beam

Solid

Attenuator

Gas Attenuator

Electron

Beam


Photon systems overview 1288333

XTOD Staff-up complete for FY05 Facilities)

R. Bionta

LLNL LCLS Project Leader

D. McMahon

XTOD Project Engineer

J. McNamara

Admin.

Rodney Victorine

Resource Manager

Jolyn Scholes

Resource Analyst

M. Eberstein

G. Otani

Procurement

R. Beale

Hazards Control

EE

E. Ables

ME

P. Duffy

M. Mckernan

S. Shen

J. Trent

Comp

K. Fong

S. Lewis

L. Ott

Physics

S. Friedrich

S. Hau-Reige

M. Pivovaroff

D. Ryutov

DNT

R. London

UC Davis

H. Baldis

Remainder of FY05 P3 labor "loosly" matrixed, i.e L. Li - thermal analysis, S. Bajt - multilayers, shops, finance…


Photon systems overview 1288333

XTOD work flow will follow ISMS practices for each WBS element

WBS Dictionary

LCLS Physics Requirements

ICDs

IWS (Integrated Work Sheet) is LLNL wide e-form for documenting ISMS for each work package:

Scope

Hazards

Controls

Roles (RI…)

Responsibilities

Training

Signoff

Hardware

Installation

Operations

Servicing

ERDs

Designs

Certified Parts Lists

Eng. Safety Notes



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Wide Field of View Direct Imager element

Calculation

Photoelectrons

Concept

Optic

Camera

Scintillators


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Indirect Imager element

Concept

1 m

101 mm

Calculation


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R&D on High-Fluence Damage to Optics element

Experiment planned at TTF2 (DESY FEL) in early FY06

Expose various materials to GW-level soft x-ray pulses



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FY05 Goals element

  • Mechanical and Vacuum

    • Cost estimate and Engineering Plan through NEH

    • IWS's, ICD's, and ERD's

  • Detailed plans / parts for prototype:

    • Gas Attenuator, Control system tests, concepts for monitoring beam and attenuation

    • Total Energy, 1 pixel

    • Direct Imager, for 826 eV tests at SSRL

  • Monte-Carlo simulations of FEE instruments

    • Document in ERDs

      • Apertures, Expected light levels, Reflectivity, …


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FY05 Goals (cont.) element

  • Conceptual designs and sample optics for

    • Indirect Imager

    • Spectrometer

  • Controls

    • Cost estimate and Engineering Plan

    • Prototype Controls

      • Gas Attenuator

      • Direct Imager

  • TTF Damage Experiment

    • Samples Fabricated and Documented


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XTOD Summary element

FY05 staffing plan implemented

FY05 work plan begun

Near term emphasis on Commissioning and FEE


Xes scope
XES Scope element

The X-Ray Endstation Systems group provides the infrastructure required for experimenters to make best scientific use of the LCLS radiation safely


Photon systems overview 1288333

The Endstation Systems will provide: element

Personnel protection systems (PPS)

Protect people from x-rays, lasers, etc.

Network and computer support

Cables, networks, servers, data storage

Prototype detectors

a suite of x-ray detectors for experiments

Instrumentation for first Atomic Physics experiments

Beamline controls

Synchronized laser system

Optics, chambers, sample handling, etc.


Recent progress
Recent Progress element

  • Solidification of scope of PIXEL project, clarification of XES instrumentation

  • New group leader: Stefan Moeller

  • Instituted user safety forum

    • How to build in a safe working environment for LCLS users


Pixel and xes
PIXEL and XES element

  • A ~$50M project called Photon Instrumentation for X-ray Experiments at LCLS (PIXEL) has been proposed

    • Will build 4 x-ray instruments for LCLS

  • Instrumentation needs are becoming much more clear

  • XES has decided not to build generic instrumentation but rather,

  • LCLS will dedicate all project effort for experimental instrumentation to one area of science: Soft X-ray Atomic Physics (AMO)


Xes status
XES Status element

  • Reworking schedules to focus on AMO

  • Preparing to staff up

  • Commencing 2-d x-ray detector development program

    • MOU in signing stage


Xes plan for fy05
XES Plan for FY05 element

  • Hire AMO scientist and detector scientist

  • Then hire controls engineer

  • Start detailed design of AMO and detectors

  • Commence 2-d detector project

  • No long-lead procurement


Xes summary
XES Summary element

  • Starting to staff up

  • Responding to improved understanding of LCLS experiments

  • Starting detector development program

  • Coordinating with XTOD, conv. facilties, and PIXEL

  • Coordinating with SLAC safety personnel regarding user safety