Transcript lgs_project_meeting_070201.ppt

LGS Project Meeting
February 1, 2006
Agenda
1.
2.
3.
IPT status updates: Laser facility, AO optomechanics, AO
software (Bouchez, Roberts, Trinh; 30 min)
Sum-Frequency Laser theory (Kibblewhite; 30 min)
Multiple star formation at the bottom of the IMF (Kraus; 30 min)
LGS project infrastructure
• AO system calendar:
http://www.google.com/calendar
Login: palomar.ao
Password: [same as harbor]
• Palomar AO lab:
– Please keep the lab clean.
– Please mark optomechanics you use on the checkout sheet on
the gray cabinet.
• Aircraft avoidance
– We have applied to the FAA for a change in operating
parameters, increasing the elevation angle range to 30º-90º.
2
Budget update
• COO portion of project is
over budget by $50k,
primarily due to higher than
expected labor and
equipment costs.
COO LGS project FY07 cumulative expenditures
400000
350000
300000
250000
200000
150000
100000
50000
07
1/
07
9/
1/
07
8/
1/
07
7/
1/
07
6/
1/
07
Budget
5/
1/
07
4/
1/
07
3/
1/
07
2/
1/
/0
6
1/
6
12
/1
/0
6
/1
/0
11
/1
10
1/
06
0
9/
• JPL portion of project is on
budget, with some
adjustment of planned labor
for remainder of FY due to
unplanned equipment costs.
Actual
3
LGS Facility update (1)
Chicago Sum Frequency Laser
• Servicing mission this week
– Replacing 1.06 µm (and maybe 1.32 µm ) laser heads.
– Fixing plumbing leaks.
• Several new intra-cavity non-linear crystals and SFG
crystals have been ordered.
• Making good progress on the characterization of the
wavelength tuning etalons and optimization of the servo.
BTO
• Full cleaning and recalibration of BTO beam train will be
required after the telescope engineering run.
• First results from laser diagnostics benches:
see Twiki site, LGS Facility IPT minutes
4
LGS Facility update (2)
Laser automation
• LGS computer is now able to control etalon temps.
• Working on communication with laser servo control box
(provides laser photodiode powers, control of frequency
and phase servo loops).
• Next steps: Read laser diagnostics bench photodiodes
and save all data to AO database.
Safety systems
• Some improvements to aircraft avoidance software in the
works.
5
AO Bench Opto-mechanics
• February
– Dichroic
• For LGS, a full field dichroic that can be motored out of the way for
laser acquisition
• For NGS, a slightly larger reflecting spot
• The optics will be switched out manually between runs
• April
– Dichroic
• Implement switching between dichroic and reflecting spot via
motorized linear stage
– LOWFS
• Re-layout LOWFS and acquisition camera in order to put the
LOWFS directly in the beam path and remove the pick off
requirement
• Testing to determine the cause of the observed loss of light in the
LOWFS path
6
Dichroic Layout For February
7
Full Field Dichroic
Optic In
Optic Out
8
Conceptual Layout for April
9
Conceptual Layout - Detail
10
AO Software
• Current Efforts
– TAO update for Feb run
• New GUI modes for LGS, NGS and Dual NGS
• Functionality to be filled in over the next couple of
months
– LOWFP bug fix - Feb
• In process
• For April
– Implementation of new Aerotech stages for
LOWFS and dichroic
11
07A Observing Schedule
Install new laser dichroic on temporary stage.
February 26-28: Engineering
Major upgrade of laser dichroic, LOWFS, and stages.
April 2-3: LGS Engineering
April 4-6: LGS Science
Fiber nuller I&T in AO lab.
LGS computer
development
April 23-24: LGS Engineering
April 25-37: LGS Science
May 2-3: NGS Fiber nuller experiment
TAO upgrade
May 23-24: LGS Engineering
May 25-26: LGS Science
LAMP I&T in AO lab.
July 2-7: NGS LAMP science
7 wks. between LGS runs:
Recoat LLT primary, other major
upgrades?
July 23, 25: LGS Engineering
July 26-28: LGS Science
12