IMACS progress report no. 16 B. Bigelow 30 July 1999 1) Project Status Currently scheduled tasks: Status: a) Filter Server mech. design (Bond) on schedule b) Filter Server prototype drafting (Poteete) late finish c) Filter Server prototype fab. (Lalo) late start d) Slit Mask Server design (Bigelow) on schedule e) Slit mask fab. development (Bigelow) late finish f) Field lens mech. des. (not assigned) delayed g) Dewar fab. (Luppino) on schedule h) CCD controller elec. design (Burley) on schedule i) Motion controller design (not assigned) delayed j) Instrument control design (Birk) on schedule b) Drafting for the filter server system (FSS) is late, which has delayed the start of fabrication. There is no budget or project schedule effect from this delay. c) Late drawings have delayed the start of fabrication. A job ad for an additional project machinist was posted in July (on the LA times, Machinist's Exchange, and Shopfloor websites). Applications have started arriving, and interviews could start in late August. e) Fabrication of slit mask prototypes has taken longer than expected. We now have mask prototypes produced by metal spinning, and produced by hydro-forming. See the IMACS web-site for details. The hydro-formed part shows the best promise, and is very cost effective. A request for quotation is out for additional mask samples in 0.012" alum. and two thicknesses in steel. There is no budget or project schedule effect from this delay. f) Mech. design of the field lens cell has been delayed by our decision to hire another engineer, rather than contracting out the work. Hiring the new engineer (Tyson Hare) should have a positive effect on both the budget (compared to the consultant option) and the project schedule. The schedule will be revised in September to balance work between Bruce, Tim, and Tyson. i) Motion Controller electronic design has been delayed by a lack of electronics staffing. Dave Carr will assist with design and fabrication of a prototype controller for the FSS. This work will be completed by 12/99. A decision regarding additional electronic design staffing will be made after that date. 2) Optics Epps reports that all of our CaF2 boules are scheduled for completion in September 1999. This is the first solid date we have had for CaF2, and it is soon! Sutin: 2.1) The field lens is estimated to be two months late. The delivery date was two weeks ago. New deliver date is about October 1. 2.2) Harland is remodeling his house, and re-writing his code to re-balance designs to be athermal. This is delaying the melt update for the long and short cameras. There is some very slight chance that the collimator may also be made more thermally tolerant, but this is less critical, since any mechanical flexure mountings for thermal correction in the collimator would be gravity invariant. 2.3) Most of my time has been spent working on a new version of my optics code. ------------------------------------------------------------------- TODO, August: 1) Baffle analysis 2) Make some decisions about coatings 3) Order glass for a test cell 4) Order test gratings for protected coating tests 5) Prod Optovac about CaF2 6) Analyze Sol-Gel 7) Learn how to clean optics! 3) Electronics No report for July. 4) Software (Birk) 4.1) The 1st version of the networked (TCP/IP) database works. It can store all kind of information (integers,doubles,strings) in a central place and access (read/write) it from all over the network. It does not send update events to clients, (see 2). 4.2) I put that project on hold and started out on a 2nd version using the X-Protocol for communication and the database itself. Reason: The X-protocol allows for a simpler mechanism of delivering database changes to the clients. August: - extensive tests of the X database - incorporate updates/changes of the mechanical elements of IMACS into the GUI (needs input from Bruce/Alan). 6) Mechanics Bruce: Progress on slit mask development continued in July, with the delivery of a hydro-formed mask, and additional laser cutting work at Laserod and ART. Hydro-formed masks made of steel are currently the most promising solution. Research into used laser cutting machines has started. A used machine could offer a substantial budget savings. Development continues in August. Mechanical design of the Slit Mask Server (SMS) is progressing on schedule. A 3D layout of the SMS is posted on the wall outside of my office. Most of the parts have been designed or selected, and final details (position sensors, fasteners, cable-wrap details) are being completed. Design continues in August. Tim: The drawings of the individual parts of the prototype filter mechanism stage were completed; however, the assembly drawings have still not arrived from Mary. I completed all of the "red lining" and corrections myself, and I am also waiting to receive a bill from Mary for the work that she has done in July. Just as the drawings were completed, the machinist (Estuardo) that is to be working on them left for holidays. Unfortunately, when he arrives back, I will be on my holidays. My plan is to have Estuardo review the drawings, and give us estimates as to the amount of time that he will require for each component. As well, I will send the drawing package out to several outside vendors for estimates. Almost all of the purchase parts have arrived for the prototype stage (with the exception of the latching magnets). The design for the rest of the filter mechanism has progressed well, but has been delayed slightly. We are still ahead of our initial schedule plan, but it looks like the delays will put us right back onto schedule. I will meet with Dave Carr at the start of next week to give him a list of all of the motion control elements that will be used in the filter mechanism. I plan to discuss the selection with him, and and see if he has any comments or recommendations. A good part of August, I will be on holidays in Victoria. I do plan to visit the GMOS team at DAO, and also take several drawing packages with me to get quotes at some of the shops that DAO utilizes. Gerry Luppino: The main progress has been in detailing some of the drawings and in ordering some parts (the Z-axis bellows for example) as well as getting some quotes from machine shops. The z-axis drive got a lot more expensive once I got some "real" quotes from the EDM vendors. Also, the bellows lead-screw assembly turned out to be a lot more ambitious (but better!). 7) Detector Systems 7.1) Various blank circuit boards have arrived for the guider camera, including the DSP timing board, the Power supply board, and the PCI interface board 7.2) The guider camera header board and backplane board have been revised and sent for fabrication 7.3) Matt arrived and started assembling circuit boards. The current count of boards in-progress: DSP boards 10 Power boards 10 PCI interface boards 5 7.4) The argon and krypton gas have arrived. Testing is imminent. 7.5) GB finished the layout of the DSP board for the mosaic camera (aside from some minor clean-up). 7.6) GB started the layout for the signal processing board for the mosaic camera. 7.7) The Keyence sensor, NEAT stages and laminar flow bench were ordered. Other back-logged parts for the guider cameras were processed. 8) July Project Meeting (7/30/99) notes: Next meeting: 10:00AM, 9/1/99 Burley - guide cameras are in fabrication, guider CCD's are due at the end of August, SITe CCD shipments should be complete by 12/99. Action items: 8.1) Brian/Bruce start Epps on IMACS optics athermalization 8.2) Sutin to publish results of AR coatings survey and cost/benefit considerations, check with Fabricant about sol-gel for Binospec. 8.3) Sutin to start orders for remaining gratings and the first set of filters. 8.4) Sutin to continue investigation of R = 20,000 options for IMACS 8.5) Dressler/Birk/Clardy to continue development of guider software specifications and positioning requirements for the principal and SH guide cameras.