Photon Systems Overview John Arthur LCLS Photon Systems

Photon Systems Overview John Arthur LCLS Photon Systems Manager February 7, 2006 Photon overview 1 John Arthur jarthur@slac. stanford. edu

XTOD Presentations XTOD 2006 Schedule Donn Mc. Mahon XTOD Diagnostics Richard Bionta XTOD Beam Transport John Trent XTOD Gas Attenuator Stewart Shen XTOD Controls Steve Lewis February 7, 2006 Photon overview 2 John Arthur jarthur@slac. stanford. edu

XES Presentation XES 2006 Schedule February 7, 2006 Photon overview Stefan Moeller 3 John Arthur jarthur@slac. stanford. edu

This Talk Response to previous review, May 2005 Coordination between groups Electron Systems (SLAC, ANL) XTOD (LLNL) XES (SLAC) LUSI (SLAC) The science community Changes since May 2005 What’s in, what’s out, what has changed February 7, 2006 Photon overview 4 John Arthur jarthur@slac. stanford. edu

Recommendations from May 2005 Proceed with proposed changes (FEH, mirrors) Did it SLAC and LLNL need to work very closely together Doing it Design with PPS in mind, use proven concepts Doing it, will do even more February 7, 2006 Photon overview 5 John Arthur jarthur@slac. stanford. edu

Coordination within LCLS Management structure Formal specification process: PRD’s, ESD’s, ICD’s Formal review process for all designs February 7, 2006 Photon overview 6 John Arthur jarthur@slac. stanford. edu

LCLS top management meets weekly February 7, 2006 Photon overview 7 John Arthur jarthur@slac. stanford. edu

Example ICD February 7, 2006 Photon overview 8 John Arthur jarthur@slac. stanford. edu

Physics and Engineering meet at System level Physics Requirements Money + Schedule February 7, 2006 Photon overview 9 John Arthur jarthur@slac. stanford. edu

Relationship with LUSI Project February 7, 2006 Photon overview 10 John Arthur jarthur@slac. stanford. edu

Building the science instruments LCLS will build one instrument Soft x-ray AMO LUSI will build 4 instruments Pump-probe dynamics on atomic scale Dynamics on micron scale Nano-particle (non-periodic) imaging Soft x-ray imaging and dynamics An additional instrument seeks funding High-Energy-Density science February 7, 2006 Photon overview 11 John Arthur jarthur@slac. stanford. edu

Coordination with external scientists LCLS Scientific Advisory Committee Issued call for Letters of Intent to do LCLS science Grouped LOI’s into 5 Science Thrust Areas LCLS Science Team Leaders About 15 scientists Represent Science Thrust Areas Meet quarterly at SLAC Help formulate Physics Requirements February 7, 2006 Photon overview 12 John Arthur jarthur@slac. stanford. edu

Role of LCLS Instrument Scientists One will be hired for each instrument Will serve as cost and schedule manager for the instrument Will also serve as a key player in the operation of the instrument when it becomes functional Function similar to ESRF beamline responsible Reports to SLAC line management (ie, XES manager or LUSI director) Participates in LCLS science group led by Jerry Hastings, involving SLAC and external scientists February 7, 2006 Photon overview 13 John Arthur jarthur@slac. stanford. edu

NEH preliminary instrument assignments Atomic physics, other soft x-ray science, and diagnostics X-ray pumpprobe Flipper Mirrors February 7, 2006 Photon overview 14 John Arthur jarthur@slac. stanford. edu

FEH preliminary instrument assignments XPCS Coherent x-ray imaging High energy density science (FUTURE) February 7, 2006 Photon overview 15 John Arthur jarthur@slac. stanford. edu

Changes since May 2005 Reshape Far Experimental Hall Add offset mirrors to scope Enlarge Front End Enclosure Refine locations for front end optics De-scope some items to save $ Shorter tunnel between NEH and FEH Flipper mirrors, side branch lines gone Other scope cuts pending February 7, 2006 Photon overview 16 John Arthur jarthur@slac. stanford. edu

New FEH design superimposed on old February 7, 2006 Photon overview 17 John Arthur jarthur@slac. stanford. edu

Offset mirrors in the FEE Upstream of all LCLS experiments Will remove high-energy background radiation FEL radiation reflected (>95%) Si. C 1. 5 mrad 24 mm offset Background from high harmonics and Bremsstrahlung not reflected February 7, 2006 Photon overview 18 John Arthur jarthur@slac. stanford. edu

X-Ray Scope Reductions Already done Eliminate flipper mirrors and FEH branch lines ($1. 9 M) Reduce length of x-ray transport tunnel by 10% ($0. 5 M) January 2006 Tot = $1. 9 M + 0. 5 M Eliminate some FEL diagnostics ($0. 4 M) Eliminate some x-ray detectors ($0. 8 M) Eliminate some computer workstations ($0. 5 M) Move some work to OPC, add funds to mirror (net $0. 4 M) Tot = $2. 1 M February 7, 2006 Photon overview 19 John Arthur jarthur@slac. stanford. edu

Summary Effective tools are in place for managing the x-ray groups Also for coordinating with LUSI and outside world LCLS x-ray design has improved and converged since May 2005 Implementing painful scope cuts to save $ February 7, 2006 Photon overview 20 John Arthur jarthur@slac. stanford. edu