* [[(Attach:)bc_mroi_spie06_approved.pdf | Proc. SPIE paper on downselect]]

* [[I4S]]

* I6

The choice of switchyard for each concept also impacts the design of the FT switchyard. See [[Switchyards]].

* [[(Attach:)downselect_defn.pdf | Workpackage Definition]]
* [[(Attach:)downselect_status_20061012.pdf | Workpackage Status 2006/10/12]]

|| ID ||! Milestone ||! Person(s) ||! Due Date ||! Status ||
||1 ||Beam size memos || DFB || ||Delivered ||
||2 ||Generic Switchyard Requirements || JC || ||Delivered ||
||3 ||Devise slide tests || CJ || ||Complete ||
||4 ||Survey of commercial slides || CP || ||Complete ||
||5 ||Generic Detector Requirements || JSY || ||Delivered ||
||6 ||P4S combiner optimization || JC || ||Complete ||
||7 ||P4S switchyard optimization || JC || ||Complete ||
||8 ||P8 combiner optimization || JC || ||Complete ||
||9 ||P8 (internal) switchyard optimization || JC || ||Complete ||
||10 ||P4/P8 manufacturer dialogue || JC ||Due 2006/07/31 ||70% done ||
||11 ||P4S/P8 spectrograph optimization || CJ ||Due 2006/09/01 ||70% done ||
||12 ||I4S combiner optimization || FB ||Due 2006/07/17 ||90% done ||
||13 ||I4S switchyard optimization || JC || ||80% done ||
||14 ||I6 combiner optimization || FB ||Due 2006/07/17 ||90% done ||
||15 ||Optical interface with fringe tracker || JC/CJ ||Due 2006/08/14 ||80% done ||
||16 ||Slide tests Phase 1 (1 slide, tip-tilt repeatability) || CP ||Due 2006/08/14 ||Complete ||
||17 ||Spatial filter evaluation || MCE ||Due 2006/09/11 ||50% done ||
||18 ||Alignability evaluation || JC/CJ ||Due 2006/10/23 ||10% done ||
||19 ||Modulator requirements || DFB ||Due 2006/07/31 ||0% done ||
||20 ||Modulator tip-tilt tests || JC ||Due 2006/09/25 ||20% done ||
||21 ||Signal-to-noise calculation || JSY ||Due 2006/10/09 ||30% done ||
||22 ||Slide tests Phase 2 (2 slides, OPD repeatability) || CP ||Due 2006/10/16 ||Awaiting slide ||
||23 ||Imaging speed calculation || JSY ||Due 2006/10/23 ||Waiting on 21 ||
||24 ||Costing || JSY ||Due 2006/10/23 ||Waiting on 10 ||
||25 ||Final Report || JSY ||Due 2006/11/06 ||
||26 ||Preliminary design for downselected concept || FB/JC ||Due 2006/11/27 ||

||! Milestone ||! Person(s) ||! Status ||
||Beam size memos || DFB ||Delivered ||
||Generic Switchyard Requirements || JC ||Delivered ||
||Devise slide tests || CJ ||Complete ||
||Survey of commercial slides || CP ||Complete ||
||Generic Detector Requirements || JSY ||Delivered ||
||P4S combiner optimization || JC ||Complete ||
||P4S switchyard optimization || JC ||Complete ||
||P8 combiner optimization || JC ||Complete ||
||P8 (internal) switchyard optimization || JC ||Complete ||
||P4/P8 manufacturer dialogue || JC ||Due 2006/07/31 ||
||P4S/P8 spectrograph optimization || CJ ||Due 2006/09/01 ||
||I4S combiner optimization || FB ||Due 2006/07/17 ||
||I4S switchyard optimization || JC ||Complete ||
||I6 combiner optimization || FB ||Due 2006/07/17 ||
||Optical interface with fringe tracker || JC/CJ ||Due 2006/08/14 ||
||Slide tests Phase 1 (1 slide, tip-tilt repeatability) || CP ||Due 2006/08/14 ||
||Spatial filter evaluation || MCE ||Due 2006/09/11 ||
||Alignability evaluation || JC/CJ ||Due 2006/10/23 ||
||Modulator requirements || DFB ||Due 2006/07/31 ||
||Modulator tip-tilt tests || JC ||Due 2006/09/25 ||
||Signal-to-noise calculation || JSY ||Due 2006/10/09 ||
||Slide tests Phase 2 (2 slides, OPD repeatability) || CP ||Due 2006/10/16 ||
||Imaging speed calculation || JSY ||Due 2006/10/23 ||
||Costing || JSY ||Due 2006/10/23 ||
||Final Report || JSY ||Due 2006/11/06 ||
||Preliminary design for downselected concept || FB/JC ||Due 2006/11/27 ||

[[(Attach:)downselect_defn.pdf | Workpackage Definition]]

Workpackage Definition: (Attach:)downselect_defn.pdf

Workpackage Definition

The following beam combiner concepts are being considered:

* [[P4S]]
* P8
* I4S
* I6