November 95

April 23 – May 17, 2001

Accomplishments / Status

Summary: Overall, 64% of the work from the Restart Review to delivery has been completed. The main focus of this report period has been 3D and 2D design of the Bulkhead Assembly, the Passive Collimator, 3D design of the support structure(s), and fabrication. All mechanisms are in fabrication except for one camera barrel and the Focus Assembly, which are in drafting check. The Pre-Slit and Post-Slit benches are in fabrication. Work has started on several fixed assemblies. Mechanism assembly and test has been planned in detail, and will start June. The OIWFS components from Gemini are now expected to arrive in June. A waiver request to expand the envelope GNIRS will occupy has been granted by Gemini. The next GNIRS Quarterly Review will be held on June 13 in Tucson.

Next Milestone: The next major project milestone is the completion of the 3D design of the Passive Collimator Compensation Assembly in late May. This will complete the design of the cold structure.

Earned Value:

	February	March	April	May
BCWS	$2,049,349	$2,278,192	$2,565,371	$2,732,977
BCWP	$1,543,495	$1,694,322	$1,804.951	$1,912,351
ACWP	$1,739,549	$1,839,301	$1,915,889	$2,031,750
SPI	0.75	0.74	0.70	0.70
CPI	0.89	0.92	0.94	0.94

Project Management: (58% complete)

The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. Work is being done to prepare for integration later this year. The August 2002 scheduled delivery date of the GNIRS instrument has not changed.

Systems Engineering: (100% of planned work)

The main focus has been support of the Bulkhead Assembly and Passive Collimator designs, and the detailed planning for Mechanism assembly and test.

Mechanical Design, Fabrication, Assembly and Test: (49% overall)

The major activity in this work package has been finishing 3D and starting the 2D design of the Bulkhead Assembly and its interfacing components, bench fabrication, and 3D and 2D design of fixed assemblies. The Passive Collimator Compensator Assembly 3D design is 95% complete and 2D detail design has started.

Mechanisms: (81% complete overall).

	Feb	Mar	Apr	May	Status
Camera	69%	77%	78%	88%	2D detail/Fab
Focus	24%	24%	30%	48%	detail check
Environmental Cover	97%	99%	99%	99%	Test (on-hold)
Acquisition Mirror	58%	68%	72%	75%	Fab (waiting for mirror)
Slit/Decker	66%	77%	83%	85%	Fab
Filter Wheel	71%	70%	73%	78%	Fab
Grating Turret	42%	51%	72%	83%	Fab
Prism Turret	48%	47%	50%	56%	Fab
Motor Drives	90%	90%	100%	-	Complete

Benches: (70% complete overall).

	Feb	Mar	Apr	May	Status
Post-Slit	56%	65%	70%	-	Fab (no new update)
OIWFS Bench	67%	67%	79%	-	Waiting for parts from IFA
Collimator		29%	29%	46%	Design/Drafting/Fab
Pre-Slit bench	44%	62%	70%	85%	Fab

Fixed Assemblies: (31% complete overall).

	Feb	Mar	Apr	May	Status
Entrance Window	96%	100%	-	-	Complete
Detector Mount	48%	49%	60%	67%	detail check
Cryo Cooler	9%	16%	16%	16%	3D design
LN2 Pre-Cool	4%	4%	17%	17%	3D design
Optical Bench Gimbal Mt.	53%	53%	54%	56%	Fab
Bulkhead Assembly	11%	24%	42%	52%	detail check
Front Rad Shield	5%	5%	5%	5%	3D design
Front Dewar Shell	26%	34%	37%	37%	3D design
Rear Dewar Shell	6%	8%	21%	21%	3D design
Vertical Inst Frame	5%	6%	6%	11%	2D drafting
Horizontal Inst Frame	1%	-	-	-	2D drafting
Dewar Mount Truss	12%	12%	12%	13%	2D drafting
Thermal Enclosure Mount	2%	7%	10%	44%	detail check
Handling Fixtures	25%	58%	-	68%	Fab (welding)

Electronics: (70% complete overall)

The design work is essentially complete and the main activity is fabrication. All electronics parts are either in house or on order.

		Feb	Mar	Apr	May	Status
Component Controller TE		51%	68%	71%	75%
	VME Crate	92%	100%	-	-	SW testing
	Motor Drive/Cryo Cooler Crate	62%	94%	100%	-	SW testing
	Internal Cabling and Connectors	12%	16%	16%	18%	assembly/wiring
	Ancillary Cage Crate	26%	26%	26%	59%	assembly/wiring
	IfA Electronics Box	100%	-	-	-	waiting for IfA
	Bench Thermal Controller Crate	-	-	61%	68%	assembly/wiring
External Cabling (Dewar to TE)		23%	23%	23%	23%	assembly/wiring
The Dewar Warm-up Controller		37%	37%	37%	37%	assembly/wiring
Dewar Electronics		-	71%	-	-
	Dewar Cold Station PCB’s	60%	60%	50%	60%	boards being stuffed
	Dewar Internal Conn/Cabling	-	72%	72%	72%	ready for fab
Documentation			50%	50%	50%	schematic cleanup

Software Development: (62% complete overall).

The areas in work include some testing software with the electronics crates. EPICS software is far ahead of schedule.

	Feb	Mar	Apr	May
Components Controller Software	67%	91%	91%	91%
EPICS Software	60%	69%	69%	69%

Procurement: (64% complete overall).

The major activities in this Work Package included monitoring vendor mechanical fabrication.

	Feb	Mar	Apr	May	Notes
Optics	-	67%	71%	73%
RMI optics	100%	-	-	-	complete
Flat Mirrors		10%	50%	50%	Fab
Pupil Viewer	100%	-	-	-	complete
Janos BaF₂lenses	8%	50%	93%	75%	3 of 4 lenses complete
Grating replicas	-	23%	50%	83%	Fab
Prisms	-	13%	13%	23%	Fab
Wollaston Prisms	-	-	0%	10%	Fab

Problems / Solutions

One BaF₂lens was broken during the final coating process at Janos. Material to replace the lens has been found, but the lens will be delivered 12 weeks late. We have adjusted our camera assembly/test plan to compensate.

Key Personnel

Jerry Penegor, GNIRS EE, is working Array Controller issues in parallel with GNIRS assignments. There is no negative impact to GNIRS. Two interns have been hired to assist over the summer, one Junior Optical Sciences student and one EE graduate student. Both will start work on June 4^th and be here for 10 weeks. John Pina, part-time technician and Optical Sciences student, will be participating in the NOAO REU program over the summer and will not be working on the GNIRS project except as time allows.

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