Detector Array

							                                   Detector Array

Please answer the following:

   1. Describe the characteristics and requirements of the Detector Array (or the
      Telescope Array), including its planned modes of operation (giving performance,
      energy threshold, etc. for each mode) and the manufacture and alignment
      requirements for each detector component. Include a description of the design and
      a summary of the estimated performance of each telescope or detector element. ,
      f. Describe any telescopes with multiple reflective surfaces completely. Indicate
      why the specific geometry or implementation was chosen. Provide ray trace
      diagrams where appropriate. For arrays, state/describe if the array is
      reconfigurable. Please fill out the Telescope/Detector Array Characteristics
      Table.

   2. Discuss the lifetime of the facility and any future upgrades. Outline plans for
      decommissioning when the activity is finished.

   3. Provide a description and an overall assessment of the technical maturity of the
      critical components, fabrication techniques, alignment, , and support structure.
      Provide a rationale and an assessment of the technical maturity of each key
      component or method (off-the-shelf hardware, hardware demonstrated on other
      systems, extrapolation from demonstrated technology or implementations,
      requires new development of existing technology, requires new technology
      development). In particular, describe fully any required new technologies or
      developments or open implementation issues required for success.

   4. For segmented telescopes, describe in detail the individual segment including the
      design (size, weight, surface requirements etc), type of construction, light-
      weighting technology required, fabrication techniques, investment required to
      produce large numbers (facility construction etc) and the support structure.
      Discuss alignment and pointing method knowledge and accuracy.

   5. Identify and describe the three lowest technical maturity components, and explain
      how and when these components will be demonstrated in reduced-scale and/or
      full-scale hardware.

   6. What are the three greatest risks to cost, schedule, and performance?

   7. Describe the telescope/detector construction and assembly methods. Indicate any
      unique construction and any special issues regarding the facility location. This
      may be included in Facility Construction section.

   8. Address to the extent possible the specific accommodation of the instruments. In
      particular, identify any challenging or non-standard requirements (alignment
      and/or pointing considerations, thermal environment/temperature limits etc).
9. Describe any aspect of the design or implementation that requires non-US
   participation.
               Telescope/Detector Array Characteristics Table

                Optical Telescope or Detector Array               Value/ Summary,
                                                                        units
    Effective Aperture Size of each Detector Element
    System Effective Focal Length (for telescopes)
    Sizes of Array Elements
    Number of Array Elements
    Total Collection Area of Experiment (as function of energy)
    Angular Resolution
    Field of View
    Energy range
    Driving Wavelength for Surface Accuracy (for telescopes)
    Required Surface Accuracy (for telescopes)
    Surface Coating Technique (for telescopes)
    Number of Mirrors or Reflecting Surfaces (for telescopes)
    Size of each Optical Element (for telescopes)
    Mass of each Segment or Element * (for telescopes)
    Total Moving Mass * (for movable telescopes)
    Mass of each Optical Element * (for telescopes)
    Type of mount used for pointing and allowed range (for
    telescopes)
    Mass and Type of Material for Support Structure * (for
    telescopes)
    Optic Design (for telescopes, e.g., Cassegrain)

*Masses should be provided with and without contingency