Readiness Review Torrent Mechanical Design. J. DeVries 8/20/2010

Transcription

1 Readiness Review Torrent Mechanical Design J. DeVries 8/20/2010 1

2 Overview Dewar Interface Connectors Isolation Transition Module (TSM) Chassis Transition Module Assembly Controller Layout Power Supply Module (PSM) Chassis Local Control Board Assembly (LCB) Ethernet Board Assembly Blower Housing Assembly Removal / Installation from DHE Detector Head Electronics (DHE) Assembly Momentary switches Mechanical Hardware Manufacture Detail / Assembly drawings Materials / plating Machined part quotes Identification 2

3 DHE Layout Controller / Transition Module Interface Detector Head Electronics (DHE) Controller Transition Module (Controller / Transition Module Interface) Dewar interface plane Transition Module is the only customizable part of the DHE 3

4 Dewar / Detector Head Electronics (DHE) Interface 4

5 Dewar / DHE Interface 2X 32 pin hermetically sealed receptacle 2X 10 pin hermetically sealed receptacle 2X Isolation Rails (G10) 6X Clearance holes for M4 mounting screws Kitt Peak Universal Dewar Shown 2X MS pin plug 6X M4 tapped holes in isolation rails 2X MS pin plug DHE Interface (Transition Module) can be customized to accept different dewars 5

6 Assembled DHE on Dewar Kitt Peak Universal Dewar Shown 6

7 Transition Module (TSM) 7

8 TSM Chassis Exploded View Base Header TRNT-EL Base Top Cover Plate Tab TRNT-EL Base Plate TRNT-EL Side Plate, Right TRNT-EL Isolation Connector Plate TRNT-EL Utility Board Header TRNT-EL Side Plate, Left TRNT-EL X Isolation Rail TRNT-El

9 TSM Chassis Connector Plate (G10) Remaining chassis parts Nickel plated Aluminum Isolation rails (G10) 9

10 Transition Module Exploded View Top Cover TRNT-EL CCD Preamp Transition Board TRNT-EL Front Cover TRNT-EL X Guide Pins TSM Chassis TRNT-EL Transition Utility Board TRNT-EL X MS pin plug 2X MS pin plug Thermocouple connectors Omega MPJ-T-F Shutter Connector Lemo ERA.2S.308.CLL 10

11 TSM Assembly Shutter Connector Lemo ERA.2S.308.CLL Thermocouple connectors Omega MPJ-T-F 11

12 Controller 12

13 Controller Layout Blower Housing Signal Processing Power Supply Module (PSM) PSM and Blower located in separate sections to isolate noise from signal 13

14 PSM Exploded View Positronics SD25F Controller Mounting Bolt TRNT-EL Fill Plate TRNT-EL PSM Enclosure Base TRNT-EL X Handle TRNT-EL Mounting Tab TRNT-EL PSM Board TRNT-EL Bottom Cover TRN-EL

15 Power Supply Module (PSM) Pull handles DHE mounting bracket and captive bolt Power Switch Remote Power Power In (J3) Control (J4) 15

16 Controller Chassis Exploded View PCB Mount, Rear TRNT-EL PCB Mount, Front TRNT-EL Blower NMB Technologies BG0703-B044 Exploded view Cross Rail, Right TRNT-EL Cross Rail, Left TRNT-EL Front Panel TRNT-EL Rear Panel TRNT-EL Bottom Plate TRNT-EL

17 Assembled Controller Chassis 17

18 Local Control Board (LCB) Assembly LCB Assembly 4X Spacer TRNT-EL Heatsink TRNT-EL Thermal Pad TRNT-EL Local Control Board (LCB) TRNT-EL Heatsink is flexure mounted to account for component height variation Total imparted force on FPGA is lbs Max allowable force on FPGA is 5.6 kg (12.3 lbs) 18

19 Ethernet Board Assembly Cover TRNT-EL Chassis ground wire for RJ45 Jack shield (other end soldered to jack shield pin) 8X Richco R906-1 Nylon Spacer PT01-PB0MH1-32BG33 Pleora iport NTx-Mini IP Engine 4X Nylon M2 screws Ethernet Board Assembly Standoff TRNT-EL Parlex 050R BO A Ribbon Cable 19

20 Blower Housing Assembly Blower Housing TRNT-EL RJ45 right angle coupler (unshielded) Tyco C Ethernet Patch Cord Ethernet Patch Cable (Shielded), Cat 6, 12 long L-Com TRD695SCR-1 Blower Housing Assembly 20

21 Exploded Controller Assembly Cover TRNT-EL Air Baffle TRNT-EL LCB Assembly TRNT-EL Clock & Bias Flex TRNT-EL Controller Chassis TRNT-EL Video Flex TRNT-EL Blower Housing Assembly TRNT-EL PSM TRNT-EL X AFE Board TRNT-EL

22 Exploded Controller Assembly 2X EMI Plate TRNT-EL Mezzanine Board TRNT-EL Momentary switch C & K 8531MZQE2 Ethernet Board Assembly TRNT-EL Rear Panel Insert TRNT-EL X Spacer TRNT-EL

23 Controller Section View Upper AFE Board Blower inlet LCB Lower AFE Board Ethernet Patch Cable Mezzanine Board Air Baffle 2X EMI Plate Ethernet Board Assembly Ethernet ribbon cable 23

24 Assembled Controller RJ45 (routed from Ethernet Board) 2X RJ45 (data sync) Duplex LC Fiber-optic 24

25 Controller Installation 6X Guide Pins Transition Module TRNT-EL Controller TRNT-EL Tighten captive M6 hex bolt Detector Head Electronics (DHE) TRNT-EL

26 Controller Removal Controller Assembly TRNT-EL Transition Module TRNT-EL Loosen captive M6 hex bolt Momentary switches ground and cut power 26

27 Momentary Switches TSM Present Switch (C&K Components 8531MZQE2, SPST,.095 travel) Controller TSM Cuts power to the Detector when the Controller is removed from the TSM (provides safety interlock for the detector) Controller TSM Grounding Switch (E-Switch TL 2285 OA, TSM preamp board mounted, DPDT,.098 travel) Connects analog ground to chassis (shorts TSM to short CCD substrate) 27

28 Thermal Management 44 W power input for fully populated DHE (two AFE boards) 30 W power input for fully populated DHE, minus one AFE Board Electronic parameters drift with temperature Servo control speed of blower to maintain constant component temperatures for a given night (varies the convection coefficient) Convection (forced) and conduction inside enclosure Natural convection to outside environment 28

29 Heat Transfer Forced convection Q Conduction through chassis Q Natural convection from outer surfaces 29

30 Mechanical Hardware Manufacture 30

31 Assembly / Detail Drawings Compete set of assembly and detail drawings available on a local server in \TorrentEngr\DOC_CTRL\EL-02 and \TorrentEngr\DOC_CTRL\EL-04 \EL-02 contains the bulk of the mechanical documentation \EL-04 is for the altered items The assembly and part files can be opened with e-drawings (free download from SolidWorks website) 31

32 Materials / Plating Cover H32 Aluminum Alloy (good for forming) Most remaining machined parts 6061-T6 Aluminum Alloy Where isolation required, G10 fiberglass Parts generally held to ±.005 tolerance Parts will be check fit before plating Plating requires good heat conduction, durability and shielding properties Aluminum parts will be electroless Nickel plated per ASTM B Type V, SC1, Class 4 (no masking) This is a high Phosphorus (>10%) content Ni plating that has good EMI shielding characteristics (non-magnetic) and is duller in appearance than the more common lower Phosphorus content Ni coatings The applied plating will be nominally thick. The temperature rise due to the plating is insignificant 32

33 Machined Part / Plating Quotes 4 bids for machined parts: Tahl Inc. Lindel Landmark NOAO 10 units $21, $22, $30, units $33, $35, $62, $53, cost ea (10 units) $2, $2, $3, cost ea (20 units) $1, $1, $3, $2, bids for Nickel plating: Chem Research Gold Tech Industries Oasis 10 units $2, pending - 20 units $4, pending - cost ea (10 units) $ pending - cost ea (20 units) $ pending - 33

34 Torrent Unit Identification TSM Alpha-numeric ID Controller Alpha-numeric ID Durability testing was done on several Metalcraft label samples and the full Report is on a local server in: \TorrentEngr\Design_Documentation\Mechanical Design Most durable label was adhesive backed photo anodized Aluminum foil available from Metalcraft (PHF series) 34

35 Backup Slides 35

36 Blower NMB Technologies Corp. 36