Recent APE WorkGreg White, 25-July-2011

Recent Work

• FACET / LCLS / LCLS-II Host level architecture and fixes

• orbitbyphase. BPMs and corrector phase analysis

• New AIDA “Buffered Acquisition” Service

• Matlab infrastructure & perf improvements

• AIDA Dimad model service, add all magnets

• ΔE → Δphase adv → +ΔFEL ? experiment

• Also EPICS v4 and iLight

FACET / LCLS / LCLS-IIArchitecture

• Documents issues with Host level of FACET

• Lists problems

• Designs solutions

• Short term fixes AND long term proposals

• Much, much more effective software development

• Solid ground for FACET. Unifies system in preparation for LCLS-II.

FACET / LCLS / LCLS-IIArchitecture

• Immediate fixes:

✓FACET Matlab

✓FACET SCP

✓Error logging.

• Infrastructure redesigned:

• Elements Oracle DB for >1 accelerator (for Andea, Paul, Mark)

• Java Environment redesign for coding efficiency and speed (for sw)

• Overall development and runtime environment improvements (for all).

orbitbyphase

• Visualize relationship of correctors to BPMs

• BPM offset (mm) * Beta (m) vs phase adv

• For either one bpm, or whole beamline

• Initial version, to gauge effectiveness.

• Possible uses: bump construction, hand steering, feedback construction

Text

Orbitbyphase for one BPM, BPMS:LI21:801

Orbitbyphase for whole beamline

orbitbyphase

• Conclusion: It is effective, improve and release

• Talk to ops about upgrades

• Talk to Nate, Jeff, Tonee

New AIDA FACET “Buffered” acquisition service

• “Buffered” acquisition: few devices - many pulses

• Compare to “Orbit” acq: many devices - few pulses

• Data returned, N (given) pulses of:

• BPMS (x, y, tmit)

• TORO (tmit)

• Subboosters, SBST (phase)

• Klystron KLYS (phase)

Example AIDA Buffered acquisition

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NDRFACET, BPMD 57, 4 devices, over 5 pulses

Which Display Groups (DGRPs) are available?

Recent Matlab fixes

• File Open Dialog

• Fixed application crashes (Henrik)

• Fixed minutes to open file (FJD), now <1 second

• Put FACET on AIDAPROD, logging to one cmlog.

ΔE → ΔPhase Adv. → ΔBeam Horn alignment → ΔFEL ?

10% E = ~ 1 π radians change in phase advance

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13.6 GeV BC2: 4.6, BSY: 13.395 GeV

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3.BC2: 4.5, BSY: 13.095 GeV

“This gave even more FEL Power”

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Gas Detector at same time

Other things• SLC Magnet Models (all string type) added to AIDA for

FACET matlab support

• EPICS v4

• Adds Services to EPICS

• Structured data

• Parameterized queries

• Chairing development group.

• iLight

• New home page with lots of references

• iPhone version.

References• FACET / LCLS / LCLS-II Host level architecture,

hostEnvironment.pdf, In sharepoint at: http://tinyurl.com/4x3neol

• AIDA Buffered Acquisition Service, http://www.slac.stanford.edu/grp/cd/soft/aida/slcBuffDpGuide.html

• 10% in Energy = ~1 pi change in phase advance, http://physics-elog.slac.stanford.edu/lclselog/show.jsp?dir=/2011/29/20.07&pos=2011-07-20T19:25:39

• iLight Home, http://www.slac.stanford.edu/~greg/ilight/home.html