November 95

GNIRS PROGRESS REPORT

June 28– July 20, 2001

Accomplishments / Status

Summary: Overall, more than 71% of the work from the Restart Review to delivery has been completed. This report does not include accurate progress updates in the areas of electronics, software and procurement.

The main focus of this report period has been design of the dewar shells, radiation shields and support structure(s), and completing fabrication of benches and mechanism. All mechanisms are either in or have completed fabrication. The Pre-Slit and Post-Slit benches just finishing fabrication. The Passive Collimator Assembly has been released for fabrication. Mechanism assembly and warm assembly testing has been started. Subsystem integration and testing has begun; integration of subsystems into the instrument will begin in the fall.

The OIWFS components, with the exception of the field lens, have been received from IFA. During receiving inspection of the parts and assemblies, we discovered that some components did not match the interfaces given in the ICD, and this has caused some rework on the WFS bench. This has delayed WFS integration and alignment, as the bench modifications are being done on a low priority basis. The WFS will continue to be integrated on a non-interference basis with mechanism assembly and testing.

The project is consistently under-spending planned labor. This is due mainly to three factors: 1) detail design taking longer than planned, 2) delays in completing fabrication and 3) shared resources with other project efforts. This has all contributed to fewer labor hours charged to the project.

Capital is also behind the spending plan due to the delays in releasing assemblies to fabrication. Spending should catch up to the plan by mid-August. The two pieces of the Bulkhead Assembly have been released and contracted for a combined total of $135K. We have also awarded the contracts for the two dewar shells, which will cost about $50K total. These items will be released for fabrication in late July.

The project remains about 6 weeks behind schedule with respect to start of instrument integration. The fall 2002 delivery date is not impacted.

Next Milestone: The next major project milestone is the completion of mechanism testing in September.

Earned Value:

	February	March	April	May	June	July
BCWS	$2,049,349	$2,278,192	$2,565,371	$2,732,977	$2,929,722	$2,976,073
BCWP	$1,543,495	$1,694,322	$1,804.951	$1,912,351	$2,119,911	$2,182,434
ACWP	$1,739,549	$1,839,301	$1,915,889	$2,031,750	$2,343,546	$2,392,603
SPI	0.75	0.74	0.70	0.70	0.72	0.73
CPI	0.89	0.92	0.94	0.94	0.90	0.91

Project Management: (65% complete)

The project plan may be viewed on the GNIRS web site at: http://www.noao.edu/ets/gnirs/ under Management, Planning. The August 2002 scheduled delivery date of the GNIRS instrument has not changed.

Systems Engineering: (100% of planned work)

The main focus has been OIWFS component assembly inspection, readiness for integration/testing, and support of critical parts procurement and mechanism kitting, assembly and warm test.

Mechanical Design, Fabrication, Assembly and Test: (79% overall)

The major activity in this work package has been the 2D design of the Bulkhead Assembly and its interfacing components, dewar shell design, bench fabrication, and 3D and 2D design of fixed assemblies.

Mechanisms: (87% complete overall).

	Feb	Mar	Apr	May	June	July	Status
Camera	69%	77%	78%	88%	90%	91%	Final Fab
Focus	24%	24%	30%	48%	59%	59%	Released for Fab
Environmental Cover	97%	99%	99%	99%	99%	99%	Test (on-hold)
Acquisition Mirror	58%	68%	72%	75%	75%	75%	Fab (waiting for mirror)
Slit/Decker	66%	77%	83%	85%	90%	90%	Fab (waiting for mirror)
Filter Wheel	71%	70%	73%	78%	83%	83%	Assembly/test
Grating Turret	42%	51%	72%	83%	85%	86%	Fabrication (nearly complete)
Prism Turret	48%	47%	50%	56%	76%	85%	Fab
Motor Drives	90%	90%	100%	-	-	-	Complete

Benches: (84% complete overall).

	Feb	Mar	Apr	May	June	July	Status
Post-Slit	56%	65%	70%	-	77%	88%	Fab
OIWFS Bench	67%	67%	79%	-	86%	87%	Bench mods in process
Collimator		29%	29%	46%	62%	64%	All parts in Fab
Pre-Slit bench	44%	62%	70%	81%	83%	87%	Fab and assembly

Fixed Assemblies: (49% complete overall).

	Feb	Mar	Apr	May	June	July	Status
Entrance Window	96%	100%	-	-	-	-	Complete
Detector Mount	48%	49%	60%	67%	68%	79%	Detail check
Cryo Cooler	9%	16%	16%	16%	24%	49%	Fab
LN2 Pre-Cool	4%	4%	17%	17%	84%	89%	2D drafting
Optical Bench Gimbal Mt.	53%	53%	54%	56%	45%	85%	Fab
Bulkhead Assembly	11%	24%	42%	52%	55%	64%	Fab
Front Rad Shield	5%	5%	5%	5%	7%	10%	3D design
Front Dewar Shell	26%	34%	37%	37%	37%	38%	2D drafting
Rear Dewar Shell	6%	8%	21%	21%	26%	-	Released to fab
Vertical Inst Frame	5%	6%	6%	11%	31%	31%	2D drafting
Horizontal Inst Frame	1%	-	-	-	8%	8%	2D drafting
Dewar Mount Truss	12%	12%	12%	13%	47%	47%	2D drafting
Thermal Enclosure Mount	2%	7%	10%	44%	53 %	53%	2D drafting
Handling Fixtures	25%	58%	-	68%	68%	68%	Fab (welding)

Electronics: (77% complete overall)

The Instrument controller design work is essentially complete and the main activity is fabrication. The Gemini approved modification to the Power Supply Rack of the GNIRS Array Controller is in process. The OIWFS electronic components are received and work on integrating components into the thermal enclosure has started.

		Feb	Mar	Apr	May	June	July	Status
Component Controller TE		51%	68%	71%	75%	66%	-
	VME Crate	92%	100%	-	-	100%	-	SW testing
	Motor Drive/Cryo Cooler Crate	62%	94%	100%	-	100%	-	SW testing
	Internal Cabling and Connectors	12%	16%	16%	18%	90%	98%
	Ancillary Cage Crate	26%	26%	26%	59%	63%	98%	Anodization and reassembly
	IfA Electronics Box	-	-	-	-	-	-	Received from IFA
	Bench Thermal Controller Crate	-	-	61%	68%	94%	98%	Assembly/wiring
External Cabling (Dewar to TE)		23%	23%	23%	23%	23%	23%	On hold
The Dewar Warm-up Controller		37%	37%	37%	37%	37%	37%	On hold; Rescheduled to later date
Dewar Electronics		-	71%	-	-	95%	-
	Dewar Cold Station PCB’s	60%	60%	50%	60%	80%	80%	Ready for install and fit check
	Dewar Internal Conn/Cabling	-	72%	72%	72%	96%	-	Fab
Documentation			50%	50%	50%	85%	-

Software Development: (68% complete overall – no new update).

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

	Feb	Mar	Apr	May	June	July
Components Controller Software	67%	91%	91%	91%	91%	-
EPICS Software	60%	69%	69%	69%	75%	-
Test & DeBug	-	-	-	-	50%	-

Procurement: (67% complete overall – no new update).

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

	Feb	Mar	Apr	May	June	July	Notes
Optics	-	67%	71%	73%	79%	-	Only POM and Acq mirror remain
RMI optics	100%	-	-	-	-	-	Complete
Flat Mirrors		10%	50%	50%	50%	-	Fab of replica mirrors remain
Pupil Viewer	100%	-	-	-	-	-	Complete
BaF₂lenses	8%	50%	93%	75%	75%	-	August completion forcast
Grating replicas	-	23%	50%	83%	86%	-	Fab
Prisms	-	13%	13%	23%	74%	-	Fab
Wollaston Prisms	-	-	0%	10%	40%	-	Fab

Problems / Solutions

The vendor selected for POM and Acquisition Mirror fabrication has not performed to his contract. This contract is being re-bid and a new order will be placed by the end of July. There is no impact to the schedule at this point.

Mechanism assembly and warm test has been off to a slow start due to final parts kitting problems. This has taken longer than anticipated but is being worked vigorously. This has caused a slip of two weeks in the mechanism assembly/test plan, but not overall impact to the main schedule.

Key Personnel

Peter Ruckle will assume the lead responsibility for software development on GNIRS as of October 1^st. Richard will be available as needed on a part time basis.

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