iSHELL INSTRUMENT CONTROLLER OVERVIEW Tony Denault Software - PowerPoint PPT Presentation

iSHELL INSTRUMENT CONTROLLER OVERVIEW • Tony Denault – Software Programmer • Eric Warmiber – Electronic Engineer 3/28/2013 1

What is the iSHELL Instrument Controller? iSHELL has 3 control systems. • Spectrograph Camera System – Computer, Controller, and electronics used to readout the H2RG Array. • Guider Camera System – Computer, Controller, and electronic used to readout the Aladdin Array. • Instrument Controller System – Computer, controllers, and electronics to do: – Motor control – Temperature control and monitoring – A/C power control. – Other hardware control. 3/28/2013 2

What is controlled by the iSHELL Instrument Controller? On page 4 of the Instrument Controller Overview, a table lists the items to be controller. Below is summary of these items. • 12 Mechanisms using stepper motors. 3 are warm located in the calbox, and 9 are cold located inside the dewar. • Sensing for ~23 position sensors or switches. A combination of analog and digital channels. • 5 Temperature Control loop: H2RG, Aladdin, Grating #1, Grating #2, and the Gas Cell. • 10 Channels of temperature monitoring. • Power control for 3 calibration lamps. 3/28/2013 3

The iSHELL Instrument Controller Our plan for the iSHELL Instrument Controller is to copy of the SpeX Instrument Controller. SpeX is currently being upgraded. Its instrument controller is being replaced. SpeX has: • 6 stepper motor (warm). • 2 servo motors (warm) • 4 A/C power outlets (Lamps) • 2 temperature controllers (H2RG, Aladdin). • 10 channels of temperature monitoring. • 8 channels of analog input. The SpeX Instrument controller is being built and written so that it can be replicated for iSHELL. This provides iSHELL with a proven design that can be implemented very quickly. 3/28/2013 4

The iSHELL Control System Block Diagram iSHELL Data Acquisition and Instrument Control Block Diagram In cool racks 3 Warm Motors Calibration Lamps AC power cntl Gas Cell (in/out) Lamp1 WTI NPS-8 CalMirror (in/out) Lamp2 Window cover (in/out) Lamp3 Utility Box Ethernet IO unit Comparator RIO-47120-16bit iSHELL Control System diagram on page 6. board Analog and Digital IO Serial Po rt Server Temperature Controllers Dig iport Color coding: 2 Lakeshore 335 (Arrays) TS 16 1 Lakeshore 218 (monitor) IRTF 2 Grating Controllers TBD LAN 9 Cold Motors • Orange = iSHELL Rotator Wheel Temperature Control GPIB to Slit Wheel H2RG Array, Ethernet • Purple = H2RG and Aladdin Camera Slit Decker Alladin Array, Guider Filter Wheel Immersion Grating #1, Order Sorter Wheel Immersion Grating #2, Systems Grating Selector (in/out) Gas Cell XD Wheel + 8 Dewar Temps XD tilt (slider) Sensors • Blue = Instrument Controller Stepper H2RG Focus (slider) Motor Stepper motor Controller. drivers DMC-4183 (phytron or 2 each, 8 others) axis Instrument Controller PC in the computer room. Aladdin H2RG ARC controllers ARC Controller Controller Controller power supplies (2 each – Agilent N6700B ) Hardware controllers are located in the coolrack TTL to TTL to fiber fiber CASS electronic box at the telescope. Fibers from TCS Rm to CASS All cool rack controllers are access using Computer Fiber to Fiber to TTL TTL Room Ethernet. ARC PCIe ARC PCIe Fiber interface Fiber interface All hardware has be used at the IRTF or is PC Parallel Port PC parallel port (timestamps (timestamps being used in the SpeX upgrade. Notes: shutter) shutter) iSHELL Instrument Instrument Instrument Control System Controlerl Spectrograph PC Computer Guider PC Array Controller in computer room in computer room IRTF Infrastructure IRTF IRTF IRTF IRTF IRTF IRTF LAN KVM LAN KVM LAN KVM 3/28/2013 5

iSHELL Instrument Controller Hardware 1 IMS stepper motor Galil DMC-4183 Motor Controller • 8 axis motor controller • 8 analog inputs • 16 digital input Warm phytron motor • 16 digital outputs • Ethernet interface. IM483-24PI micro stepping motor driver. IM483 driver DMC 4183 3/28/2013 6

iSHELL Instrument Controller Hardware 2 Hall Effect Sensor Conditioning Hardware • The current SpeX comparator board is shown. In-house design. • We plan to use an updated version of the this board for the SpeX upgrade, and iSHELL. For Additional Analog or Digital IO Galil RIO-47120-16bits • 8 analog inputs • 8 analog outputs • 16 digital inputs • 16 digital outputs • Ethernet port • Used by the IRTF TCS. 3/28/2013 7

iSHELL Instrument Controller Hardware 3 Lake Shore 335 Temperature Controller • Newer version of the 330 (SpeX), 332 (NSFCAM) used by the IRTF. • Ethernet interface provide by a Prologix GPIB-Ethernet device. Lake Shore218 Temperature monitor • Newer version of the 208 used by SpeX. • Interface is RS-232 Digi PortServer • RS-232 to Ethernet • IRTF uses various model of the PortServer.. 3/28/2013 8

iSHELL Instrument Controller Hardware 4 Instrument Controller Computers • Standard PC • Linux OS • Being used to develop the SpeX Instrument Controller Software. WTI NPS-8 • 8 outlets of A/C power control over Ethernet. • To be used for Calibration Lamps. 3/28/2013 9