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Starting with the 2025A semester, MWA will be running with 32 receivers, each capable of digitising 8 tiles simultaneously, for a maximum of 256 tiles.

...

  • When the correlator is running in ‘oversampling’ mode, all of the RRI receivers must be disabled, because the correlator can’t handle a mix of oversampled data (from SHAO and/or NI receivers) and critically sampled data (from RRI receivers). That means at most 128 tiles can be used - the tiles in the ‘Phase II compact’ configuration below.

  • Changing between ‘oversampling’ and ‘critically sampled’ mode is currently manual, and labour intensive, and will happen during the 2025A semester on a weekly basis, at best, with a cadence depending on the balance between oversampling and non-oversampling time requested for that week/month.

  • In 2025B2025A, the NI receivers will still be connected to very long-baseline solar tiles (the LBF and LBG groups), so will not be included in the compact configuration with the SHAO receivers.

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Tile Name

Tile IDs

Name

Type

Region

Can oversample?

Phase II compact

(128T)

Phase II extended

(128T)

Phase I plus hexes

(200T)

Phase I plus Solar Powered

(184T)

Full array

(256T)

Tile011-18

11-18

TBD (pad 1)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile021-26, 47, 28

21-26,47,28

TBD (pad 8)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile031-38

31-38

TBD (pad 2)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile041-46, 27, 48

41-46,27,48

TBD (pad 2)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile051-58

51-58

rec05

RRI

Phase I extended

Y

Y

Y

Y

Tile061-68

61-68

TBD (pad 1)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile071-78

71-78

rec07

RRI

Phase I extended

Y

Y

Y

Y

Tile081-88

81-88

TBD (pad 8)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile091-98

91-98

TBD (pad 9)

SHAO

Phase I core

Yes

Y

Y

Y

Y

Tile101-108

101-108

rec10

RRI

Phase I extended

Y

Y

Y

Y

Tile111-118

111-118

rec11

RRI

Phase I extended

Y

Y

Y

Y

Tile121-128

121-128

rec12

RRI

Phase I extended

Y

Y

Y

Y

Tile131-138

131-138

rec02

RRI

Phase I extended

Y

Y

Y

Y

Tile141-148

141-148

rec06

RRI

Phase I extended

Y

Y

Y

Y

Tile151-158

151-158

rec15

RRI

Phase I extended

Y

Y

Y

Y

Tile161-168

161-168

rec04

RRI

Phase I extended

Y

Y

Y

Y

HexE01-08

1001-1008

TBD (pad 9)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexE09-16

1009-1016

rec19 (pad 3)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexE17-24

1017-1024

rec20 (pad 3)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexE25-32

1025-1032

TBD (pad 4)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexE32-E36, HexS01-S04

1033-1040

TBD (pad 4)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexS05-12

1041-1048

TBD (pad 5)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexS13-20

1049-1056

TBD (pad 5)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexS21-S28

1057-1064

TBD (pad 6)

SHAO

Phase II Hexes

Yes

Y

Y

Y

HexS29-S36

1065-1072

TBD (pad 6)

SHAO

Phase II Hexes

Yes

Y

Y

Y

LBFA1-A8

2001-2008

rec01

RRI

Phase II Solar

Y

Y

Y

LBB1-B8

2009-2016

rec08

RRI

Phase II Solar

Y

Y

Y

LBC1-C8

2017-2024

rec14

RRI

Phase II Solar

Y

Y

Y

LBD1-D8

2025-2032

rec09

RRI

Phase II Solar

Y

Y

Y

LBE1-E8

2033-2040

rec13

RRI

Phase II Solar

Y

Y

Y

LBF1-F8

2041-2048

rec18

NI

Phase II Solar

(YES)**

Y

Y

Y

LBG1-G8

2049-2056

rec17

NI

Phase II Solar

(YES)**

Y

Y

Y

...