CSV Issues

B. Vila-Vilaro(NAOJ)

ASAC F2F, Florence, Sept 2006

CSV Teams

Since ACA System PDR (Nov 2005) “joint” activity

Staffing: “Core” members + Additional -Requirements (“boxes” approach) -Negotiations with ASIAA (Taiwan) -EA ARC Contribution On-site vs. Remote Support Issues ATF and AIV involvement (How many and

when)

•“Similar” tests/Knowledge base

•Sharing Resources

Additional (pre)CSV Sites

MELCO Antenna Construction Facility (Kurashiki,Okayama Pref.) Oct-Dec 2006: CIPT + Metrology + Pointing

ACA Correlator Test Facility (NAOJ, Mitaka) Sept-Oct 2006, Dec 2006-Jan 2007,May 2007-

Sept-2008

SMA @ Mauna Kea Observatory (Hawaii, USA)

ASTE Tests

ACA CorrBand4

Band8

Band10

ACA CSV Timeline

Both 12m handed over at same time

MELCO Refurbished 12m Antenna

First 7m Antenna

Strawman CSV Model OSF AOS

12M 2(?)

7M 2(?)

First

7M

ACA BALMA ACA BALMA

Ant Ant Site Site

Similar Antennas

Similar Tests

Sharing Resources and Experience

Joint Array

TP+Interf

Combined Modes

Additional Bands

Other Obs. Modes

12m and 7m ant: Main Diff.

12m Ant 7m AntSize 12m 7m

Surf Acc 25m 20 m

Optics f/D~0.4 f/D~0.367Central Hole

Subref Nutator+Cone Subref+Cone

WVR ON None (intially?)

Obs Modes TP(all)+Interf TP(some)+Intf

HolographyBeam Patt

ACA Specific Issues

TP Observations + Nutator WVR Phase Correction (4-point method) ACA Correlator Issues Configuration Evolution until Full Operation Calibration (Cross-calibration, high accuracy

modes, etc)

CSV STAGES for ACA

•1 TP 12m antenna (Milestone, not at ACA Site)

•1TP + ACA Correlator

•2TP + ACA Correlator

•4 TP + 1st 7m

•Growth of 7m Array