November 95

GNIRS PROGRESS REPORT

September 22 – October 19, 2001

Accomplishments / Status

Summary: 82% of the work from the Restart Review to delivery has been completed.

The work during this period included hosting a Quarterly Review on October 5^th. In addition to the review, significant progress was made on mechanical design of the radiation shields and the vendor fabrication of the Bulkhead Assembly and Dewar Shells. Except for the Focus Assembly, all mechanisms have completed fabrication. Grating and Prism Turret mechanism testing is underway.

An update to the Envelope Waiver, submitted to Gemini last month, has been approved.

A problem with the OIWFS Gimbal Mirror assembly has stopped work on the integration of the WFS components onto the bench. We are waiting for Gemini direction on how to proceed. Work on the WFS electronics and software checkout is proceeding and we have successfully tested the mux readout.

The two replica mirrors and the final camera lens are still in fabrication. All other optics are received. Two camera barrels are still in fabrication, but test and alignment of the other two camera barrels are ready to start as soon as the test fixture is completed.

A design modification to the Bulkhead Assembly was required to compensate for a vendor fabrication error. This involved the design of a new support ring, which will permanently install on the Bulkhead Assembly. Leak testing of the entire dewar assembly is scheduled for late November.

Change orders for delivery of GNIRS to Chile, including Testing, Training, and Commissioning, and for the Differential Pressure Switch, are in process.

Next Milestone: The next major project milestone is the completion of Bulkhead Assembly and Dewar Shell fabrication and leak test in November.

Earned Value:

	March	April	May	June	July	August	September	October
BCWS	$2,278,192	$2,565,371	$2,732,977	$2,929,722	$2,976,073	$3,030,916	$3,085,811	$3,145,000
BCWP	$1,694,322	$1,804.951	$1,912,351	$2,119,911	$2,182,434	$2,357,289	$2,526,319	$2,573,084
ACWP	$1,839,301	$1,915,889	$2,031,750	$2,343,546	$2,392,603	$2,603,604	$2,762,963	$2,938,004
SPI	0.74	0.70	0.70	0.72	0.73	0.78	0.82	0.82
CPI	0.92	0.94	0.94	0.90	0.91	0.91	0.91	0.88

This table reflects planned and actual charges to the project as of October 19, 2001. We have spent $1,220,474 in capital to date.

Project Management: (74% 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 September 25, 2002.

Systems Engineering: (100% of planned work)

The main focus has been support of design updates, mechanism assembly and warm test, and preparation of the Test Plan for Acceptance Testing, Delivery to Chile, Training and Commissioning. The Test Plan has been submitted to Gemini for approval.

Mechanical Design, Fabrication, Assembly and Test: (90% overall)

The major activity in this work package has been a design modification to the Bulkhead assembly, 3D and 2D design of radiation shields, and fabrication.

Mechanisms: (93% complete overall). The Focus Mechanism is the only mechanism assembly still in fabrication. Most mechanisms are essentially ready for test. Testing is underway for the Grating and Prism turrets and the Slit Slide is in the final stages of rework. The IFU mass models have been fabricated and installed. The Acquisition Mirror mechanism is waiting for the mirror, and two camera barrels are in fabrication.

	Feb	Mar	Apr	May	June	July	Aug	Sept	Oct	Status
Camera	69%	77%	78%	88%	90%	91%	91%	91%	92%	Final Fab/test
Focus	24%	24%	30%	48%	59%	59%	60%	67%		Fab
Environmental Cover	97%	99%	99%	99%	99%	99%	99%	99%	99%	Test (on-hold)
Acquisition Mirror	58%	68%	72%	75%	75%	75%	76%	93%	93%	(waiting for mirror)
Slit/Decker	66%	77%	83%	85%	90%	90%	93%	93%	93%	Rework, Assembly/test
Filter Wheel	71%	70%	73%	78%	83%	83%	95%	95%	95%	Ready for test
Grating Turret	42%	51%	72%	83%	85%	86%	89%	97%	98%	Test
Prism Turret	48%	47%	50%	56%	76%	85%	92%	98%	98%	Test
Motor Drives	90%	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.

	Feb	Mar	Apr	May	June	July	Aug	Sept	Oct	Status
Post-Slit	56%	65%	70%	-	77%	88%	94%	99%	100%	Complete
OIWFS	67%	67%	79%	-	86%	87%	89%	99%	100%	Complete
Collimator		29%	29%	46%	62%	64%	77%	95%	96%	Fab
Pre-Slit	44%	62%	70%	81%	83%	87%	91%	99%	100%	Complete

Fixed Assemblies: (73% complete overall). The Radiation Shields are the pacing items in fixed assemblies, followed by the Thermal Distribution Assembly. Fabrication of the Dewar Shells and the Bulkhead Assembly is proceeding according to planned schedule.

	Feb	Mar	Apr	May	June	July	Aug	Sept	Oct	Status
Entrance Window	96%	100%	-	-	-	-	-	-	-	Complete
Detector Mount	48%	49%	60%	67%	68%	79%	79%	97%	97%	Waiting for wiring
Cryo Cooler	9%	16%	16%	16%	24%	49%	51%	59%	59%	Fab
Thermal Distribution Assembly							12%	26%	66%	3D/2D Design
Bulkhead Rad Shield							1%	5%	9%	3D Design
LN2 Pre-Cool	4%	4%	17%	17%	84%	89%	91%	91%	91%	Fab
Optical Bench Gimbal Mt.	53%	53%	54%	56%	45%	85%	95%	100%	-	Complete
Bulkhead Assembly	11%	24%	42%	52%	55%	64%	74%	75%	90%	Fab
Front Rad Shield	5%	5%	5%	5%	7%	10%	10%	10%	16%	3D design
Rear Rad Shield							18%	18%	30%	3D/2D design
Front Dewar Shell	26%	34%	37%	37%	37%	38%	66%	70%	88%	Fab
Rear Dewar Shell	6%	8%	21%	21%	26%	-	57%	61%	82%	Fab
Vertical Inst Frame	5%	6%	6%	11%	-	-	14%	77%	84%	Fab (welding)
Horizontal Inst Frame	1%	-	-	-	8%	8%	15%	57%	57%	Fab (welding)
Dewar Mount Truss	12%	12%	12%	13%	47%	47%	47%	47%	73%	Fab
Thermal Enclosure Mount	2%	7%	10%	44%	53 %	53%	58%	70%	89%	Fab
Handling Fixtures	25%	58%	-	68%	68%	68%	100%	100%	-	Complete
Ballast Weights								75%	83%	Fab

Electronics: (86% complete overall). Instrument controller is essentially complete. The OIWFS electronic components have been installed in the Thermal Enclosure and are being checked out as OIWFS integration proceeds. The Leach controller has been checked out and seems to work.

		Feb	Mar	Apr	May	June	July	Aug	Sept	Oct	Status
Component Controller TE		51%	68%	71%	75%	66%	-	90%	86%	86%
	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%	98%	98%	98%
	Ancillary Cage Crate	26%	26%	26%	59%	63%	98%	98%	98%	98%	Assembly
	IfA Electronics Box	-	-	-	-	-	-	30%	30%	30%	In check out
	Bench Thermal Controller Crate	-	-	61%	68%	94%	98%	98%	98%	98%	Assembly/wiring
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%	37%	37%
Dewar Electronics		-	71%	-	-	95%	-	95%	95%	95%
	Dewar Cold Station PCB’s	60%	60%	50%	60%	80%	80%	80%	80%	80%	Ready for install and fit check
	Dewar Internal Cabling	-	72%	72%	72%	96%	-	96%	96%	96%	On Hold – waiting for dewar fab completion
Documentation			50%	50%	50%	85%	-	95%	95%	95%

Software Development: (85% complete overall).

The areas in work include testing software with the electronics crates and working on the EPICS software. The OCSwish software has been received and checked out. Resources assigned to the software task are also working on the Gemini Array Controller.

	Feb	Mar	Apr	May	June	July	Aug	Sept	Oct
Components Controller Software	67%	91%	91%	91%	91%	-	91%	94%	94%
EPICS Software	60%	69%	69%	69%	75%	-	82%	82%	82%
Test & DeBug	-	-	-	-	50%	-	50%	75%	75%

Procurement: (79% complete overall).

The major activities in this Work Package included monitoring vendor mechanical and optical component assembly fabrication. Fabrication of the final camera lens and the two replica mirrors will be complete and delivered in November.

	Feb	Mar	Apr	May	June	July	Aug	Sept	Oct	Notes
Optics	-	67%	71%	73%	79%	-	89%	86%	86%
RMI optics	100%	-	-	-	-	-	-	-	-	Complete
Flat Mirrors		10%	50%	50%	50%	-	99%	99%	99%	Fab of replica mirrors
Pupil Viewer	100%	-	-	-	-	-	-	-	-	Complete
BaF₂lenses	8%	50%	93%	75%	75%	-	75%	90%	90%	Fab
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

Problems / Solutions

A modification to the Bulkhead Assembly was required due to a vendor error in fabrication. This has been accomplished and incorporated into the design and fabrication of the assembly. No schedule delay resulted.

The OIWFS Gimbal Mirror assembly has an internal problem that has been referred to Gemini for resolution. The GNIRS team is prepared to effect repair of the assembly, but can do so only as directed by Gemini.

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 will be completed and submitted to the USGPO by mid-November, 2001.

Key Personnel

Ed Hileman, SR. Mechanical Engineer and a Design Draftsman, scheduled for release from GNIRS on November 1^st, have been extended on the project until the Radiation Shields are in fabrication.

Dale Circle, Sr. Designer, is scheduled to leave the project on December 31^st.

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