November 95

GNIRS PROGRESS REPORT

November 24 – December 21, 2001

Accomplishments / Status

Summary: 85% of the work from the Restart Review to delivery has been completed. Any differences in % complete shown in the detail sections of this report are due to the rescheduling tasks because of delays in mechanism testing and Radiation Shield design and fabrication. The net effect has been to slip delivery of the instrument into late October 2002.

This review period included the Thanksgiving and Christmas holidays and end-of-year staff vacations. Progress was made on mechanism testing, radiation shield design, Pre-Slit bench optics installation and alignment, grating turret and camera turret flexure testing, and Camera Barrel assembly.

The Radiation Shield design is proceeding but taking much longer than anticipated. This work should be complete and into fabrication by mid-January. Mechanism testing is also taking longer than planned and will delay bench integration into the Bulkhead Assembly until late February. Mechanism work in process includes flexure testing of the Camera assembly and the Grating Turret Assembly. Final wiring of the Slit-Decker and Filter Wheel assemblies is completed. These units are ready and staged for cold testing.

The Bulkhead Assembly, complete with Front and Rear Dewar Shells and mounting truss, has been received. Fit checks on external trusses, including the Thermal Enclosures and trusses, are complete. The final truss fabrication is complete except for painting, which is in process.

The integration of the WFS components onto the bench is complete, alignment is complete and wiring is complete. Software checkout is proceeding. Installation of the actual HgCdTe detector and prism is still pending.

Change orders for delivery of GNIRS to Chile, including Testing, Training, and Commissioning, and for the Differential Pressure Switch, are still in process. Work on the Differential Pressure Switch is complete. The test plan for Acceptance Testing, Delivery to Chile, Training and Commissioning has been submitted to Gemini for approval

Next Milestone: The next major project milestone is the completion of Radiation Shield design by January 15^th.

Earned Value:

	May	June	July	August	September	October	November	December
BCWS	$2,732,977	$2,929,722	$2,976,073	$3,030,916	$3,085,811	$3,145,000	$3,192,781	$3,236,748
BCWP	$1,912,351	$2,119,911	$2,182,434	$2,357,289	$2,526,319	$2,573,084	$2,617,408	$2,884,471
ACWP	$2,031,750	$2,343,546	$2,392,603	$2,603,604	$2,762,963	$2,938,004	$3,122,731	$3,313,415
SPI	0.70	0.72	0.73	0.78	0.82	0.82	0.82	0.89
CPI	0.94	0.90	0.91	0.91	0.91	0.88	0.84	0.87

This table reflects planned and actual charges to the project as of December 21, 2001. We have spent $1,293,183 in capital to date.

Project Management: (79% complete)

The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. The current scheduled delivery date of the GNIRS instrument is October 24, 2002, due to the delays in finishing the Radiation Shields and Mechanism testing.

Systems Engineering: (100% of planned work)

The main focus has been Camera and Grating and Prism Turret mechanism assembly and warm test and support of design updates.

Mechanical Design, Fabrication, Assembly and Test: (93% overall)

The major activity in this work package has been fit checks of components on the Bulkhead Assembly, 3D and 2D design of radiation shields, and fabrication.

Mechanisms: (97% complete overall).

	Mar	Apr	May	June	July	Aug	Sept	Oct	Nov	Dec	Status
Camera	77%	78%	88%	90%	91%	91%	91%	92%	98%	99%	Test
Focus	24%	30%	48%	59%	59%	60%	67%		73%	89%	Assembly
Environmental Cover	99%	99%	99%	99%	99%	99%	99%	99%	99%	99%	on-hold
Acquisition Mirror	68%	72%	75%	75%	75%	76%	93%	93%	-	89%	Assembly
Slit/Decker	77%	83%	85%	90%	90%	93%	93%	93%	95%	99%	Test
Filter Wheel	70%	73%	78%	83%	83%	95%	95%	95%	95%	96%	Test
Grating Turret	51%	72%	83%	85%	86%	89%	97%	98%	-	98%	Test
Prism Turret	47%	50%	56%	76%	85%	92%	98%	98%	-	95%	Test
Motor Drives	90%	100%	-	-	-	-	-	-	-	-	Complete

Benches: (98% complete overall). Benches are complete. The Collimator has a few parts still in fabrication, and is nearly ready for assembly. Wiring of the benches will be done in Integration.

	Mar	Apr	May	Jun	July	Aug	Sept	Oct	Nov	Dec	Status
Post-Slit	65%	70%	-	77%	88%	94%	99%	100%	-	-	Complete
OIWFS	67%	79%	-	86%	87%	89%	99%	100%	-	-	Complete
Collimator	29%	29%	46%	62%	64%	77%	95%	-	-	95%	Assembly
Pre-Slit	62%	70%	81%	83%	87%	91%	99%	100%	-	-	Complete

Fixed Assemblies: (81% complete overall). The Radiation Shields are the pacing items in fixed assemblies.

	Mar	Apr	May	June	July	Aug	Sept	Oct	Nov	Dec	Status
Entrance Window	100%	-	-	-	-	-	-	-	-	-	Complete
Detector Mount	49%	60%	67%	68%	79%	79%	97%	97%	-	96%	Waiting for wiring
Cryo Cooler	16%	16%	16%	24%	49%	51%	59%	59%	70%	88%	Fab
Molecular Sieve									45%	100%	Complete
Thermal Distribution Assembly						12%	26%	-	-	52%	Fab
Bulkhead Rad Shield	This task closed – effort renamed to Passive and Active Rad Shields										Task closed
LN2 Pre-Cool	4%	17%	17%	84%	89%	91%	91%	91%	-	79%	Fab
Optical Bench Gimbal Mt.	53%	54%	56%	45%	85%	95%	100%	-	-	-	Complete
Bulkhead Assembly	24%	42%	52%	55%	64%	74%	75%	90%	98%	100%	Complete
Passive Rad Shield	Task renamed -changed from Front Rad Shield assy									41%	3D/2D design
Active Rad Shield	Task renamed -changed from Rear Rad Shield assy									15%	3D/2D design
Front Dewar Shell	34%	37%	37%	37%	38%	66%	70%	88%	100%	-	Complete
Rear Dewar Shell	8%	21%	21%	26%	-	57%	61%	82%	100%	-	Complete
Vertical Inst Frame	6%	6%	11%	-	-	14%	77%	84%	92%	99%	Paint
Horizontal Inst Frame	-	-	-	8%	8%	15%	57%	57%	100%	-	Complete
Dewar Mount Truss	12%	12%	13%	47%	47%	47%	47%	73%	-	84%	Fab – task reschduled
Thermal Enclosure Mount	7%	10%	44%	53%	53%	58%	70%	89%	96%	100%	Complete
Handling Fixtures	58%	-	68%	68%	68%	100%	100%	-	-	-	Complete
Ballast Weights							75%	83%	100%	-	Complete

Electronics: (89% complete overall).
Instrument controller is complete and tested in the environmental chamber. At this point only the IFA cage and bench (SDSU) box on the dewar remain to be tested. Tasks that show % complete decreases are an attribute of MS project due to rescheduling.

		Apr	May	June	July	Aug	Sept	Oct	Nov	Dec	Status
Component Controller TE		71%	75%	66%	-	90%	86%	86%	-	72%
	VME Crate	100%	-	-	-	-	-	-	-	-	SW testing
	Motor Drive/Cryo Cooler Crate	100%	-	-	-	-	-	-	-	-	SW testing
	Internal Cabling and Connectors	16%	18%	90%	98%	98%	98%	98%	100%	-	Complete
	Ancillary Cage Crate	26%	59%	63%	98%	98%	98%	98%	100%	-	Complete
	IfA Electronics Box	-	-	-	-	30%	30%	30%	30%	30%	In check out
	Bench Thermal Controller Crate	61%	68%	94%	98%	98%	98%	98%	70%	100%	Complete
External Cabling (Dewar to TE)		23%	23%	23%	23%	23%	23%	23%	23%	23%
The Dewar Warm-up Controller		37%	37%	37%	37%	37%	37%	37%	-	59%	Task rescheduled
Dewar Electronics		-	-	95%	-	95%	95%	95%	95%	60%
	Dewar Cold Station PCB’s	50%	60%	80%	80%	80%	80%	80%	80%	80%	Ready for install and fit check
	Dewar Internal Cabling	72%	72%	96%	-	96%	96%	96%	-	58%	On Hold – waiting for dewar
Documentation		50%	50%	85%	-	95%	95%	95%	95%	95%
Software Test Fixture						100%	-	-	-	-	Complete
Array Controller Upgrade										100%	Complete

Software Development: (82% complete overall).

The areas in work include testing software with the electronics crates, working on the EPICS software and on the OIWFS software. Resources assigned to the software task are also working on the Gemini Array Controller. Task percentage complete changes shown are due to rescheduling.

	Mar	Apr	May	June	July	Aug	Sept	Oct	Nov	Dec
Components Controller Software	91%	91%	91%	91%	-	91%	94%	94%	94%	85%
Test & DeBug	-	-	-	50%	-	50%	75%	75%	75%	95%
EPICS Software	69%	69%	69%	75%	-	82%	82%	82%	-	96%

Alignment and Integration: (14% complete overall)

The area has been the optical and mechanical design of the Telescope Simulator. The Simulator optical design is complete.

	Dec
Telescope Simulator	46%
I. Dewar and Structure	-
II. Mechanical Integration	-
III. Warm Tests	-
IV. Cold Tests	-

Deliverables: (21% complete overall)

Work in this area has focused on the preparation test plans for acceptance testing.

	Dec
Instrument Hardware	-
Training	-
Test plans	46%
Manuals	-
As-Built Fabrication Drawings	-

Procurement: (85% complete overall).

The major activities in this Work Package included monitoring vendor mechanical and optical component assembly fabrication.

	Mar	Apr	May	June	July	Aug	Sept	Oct	Nov	Dec	Notes
Optics	67%	71%	73%	79%	-	89%	86%	86%	86%	86%
RMI optics	-	-	-	-	-	-	-	-	-	-	Complete
Flat Mirrors	10%	50%	50%	50%	-	99%	99%	99%	100%	-	Complete
Pupil Viewer	-	-	-	-	-	-	-	-	-	-	Complete
BaF₂lenses	50%	93%	75%	75%	-	75%	90%	90%	99%	100%	Complete
Grating replicas	23%	50%	83%	86%	-	100%	100%	-	-	-	Complete
Prisms	13%	13%	23%	74%	-	95%	100%	-	-	-	Complete
Wollaston Prisms	-	0%	10%	40%	-	95%	100%	-	-	-	Complete

The only optics left to procure are for the Telescope Simulator, which is still in design.

Problems / Solutions

1. Radiation Shields remain the pacing item on the project. This task is much more difficult that originally estimated, and progress has been slow due to the holidays and staff vacations at the end of the calendar year. Fabrication time after design completion is estimated to be 4-6 weeks, which will put the integration of the bench assemblies into the bulkhead assembly into March. This may impact the scheduled delivery date of September 22. We have a vendor standing by to do the fabrication on a high priority basis, which may shorten the anticipated fabrication time. We are watching this carefully and will report any further slip or gain as it occurs.

2. There are two Change Orders outstanding which need to be completed and submitted to Gemini:

· Change Order for delivery of GNIRS to Chile

· Change Order revision for the Differential Pressure Switch

These CO’s were scheduled to be completed in December, but will now be submitted to the USGPO by the end of January 2002.

Key Personnel

Two changes in personnel have taken place since the last monthly report:

Ed Hileman, Sr. Mechanical Engineer, has been assigned to another NOAO project. Ed will remain available to GNIRS on an as-needed basis.
Dale Circle, Sr. Mechanical Designer, has left the project.

These staffing changes were planned and do not impact the work left in the design-drafting area.

If you have any questions or suggestions regarding this website, please contact Melissa Bowersock.

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