FY’03 ( 1 man-year ; punt effort):
I Laser Lab readiness – B031 clean room, S20, other ?, (more later)
II Laser architecture & layout – oscillator choices & bid package,
amplifier & pump choices (with Laser Advisory Committee)
III Long Lead procurements (for FY’05 (04?))
IV Temporal Pulse Shaping - at reduced bandwidth (MIRA)
V GTF Related – spatial profile flattening (PF I),
ultrafast pulse detection (PG FROG)
VI Controls Issues Revisited (EPICS)
VII Spares – philosophy, bare-bones program (more later….)
VIII Modeling/computations –includes current Zemax effort
IX Collaborative Efforts – diagnostics, timing stabilization schemes,
spatial profile flattening, other facilities & institutions,
(in sync with funding profile)
FY’04: (~ 2 man-years)
I. Oscillator & Diagnostic Tests (includes Diagnostics I, Timing Stabilization I, and Profile Flattening I, more on long lead procurement?)
II. Temporal Pulse Shaping (includes other methods – Dazzler, stacker?…)
III. Pulse Stretching/Compression (includes documentation of chirp control and higher order effects, effects of oscillator pointing, air currents, and temporal shaping)
IV. Pockels cell evaluations
V. Pump laser tests & beamline design (includes profiles, stability, collimation & flattening, TiS absorption, polarization orientation, flashlamp monitoring, feed forward system)
Other. Further details – controls (EPICS), spares, construction phase
FY’05: (~ 2 man-years)
I. Amplifier Issues/Development (includes TS II,D II, probe beam, nonlinearities, E-O)
II. Spatial Profile Flattening & Filtering (includes PFG II, stretcher/compressor matching, thresholds for damage & ionization)
III. UV Conversion, NLO (includes damage thresholds, temperature control, documentation of conversion saturation, development of unconverted beamlines, effects of profile shaping, TS II)
IV. UV Transport & Launch to Cathode (includes efficiency, surrogate cathode development, real cathode-based diagnostics, launch grating and final profile shaping, allowances for extended diagnostics , laser cleaning schemes, and double pulsing)
Other. Further Details – controls (EPICS), spares, construction phase
FY’06 :( 2 man-years)
Relocation? Commissioning
Other
Notes:
Prototyping:
characteristics (i) purchase what we should and can (eg. oscillator, pumps,
Pockels cells, amplifiers,…)
(ii) develop locally what we should (eg. uv conversion &
transport, temporal and spatial profile shaping,..)
(iii) develop resident expertise (i.e. beyond me…)
(iv) emphasize uv pulse ‘tailoring’ and associated finesse
(v) emphasize controls issues ab initio
(vi) prototype is the real laser to be used for commissioning
(vii) clearly a 2 year effort with 2 FTE’s (i.e. 4 man-years)
Scheduling: (aimed at FY’06 commissioning and given the
above)
Plan A: Other laser lab available in early FY’04 (i.e. set up in FY’03)
Long lead procurements in late FY’03
S20 available in early FY’06 (i.e. set up in FY’05)
relocate prototype from other lab to S20 in early FY’06
Plan B: Prototype development starts in S20 in mid FY’04
(i.e. S20 setup in late FY’03 to early FY’04)
Long lead procurements in early FY’04
relocation prior to FY’06 commissioning is avoided
Plan C: contract prototype development outside SLAC
(mitigates real estate issue but procurement
schedule remains problematic)
On The Horizon:
Spares program is a ‘hot’ spares program – means a parallel tests in S20
S20 access is to be deliberately limited during LCLS operation
Laser development lab will be essential:
– supported by SLAC history and technical common sense
- efficiency mandates that this be combined with an RF
Photoinjector test lab in due time