ALMADevelopers'Workshop

Band1StatusTedHuang

Outline

•  Introduc9on

•  Schedule

•  Performance

Team

•  ALMABand-1isALMA-EAproject,withcollabora9onwithU.Chile,NRAOandHIA.

•  ApprovedbyALMABoardforproto-typingin2014.•  Band1Produc9onapprovedinALMA:May2016•  ALMA-EAtake all responsibilities for the Band 1 work

package: –  CCA+WCA,CPDS,Biasmodulesandphotomxiers.–  Band 1 Prototype Development –  Band 1 Cartridge Production–  Maintenance; –  Integra9onandtes9ngatOSF –  Test Line and its Maintenance

Organizational

Band1Project•  Keycomponentdown-selec9on:Jan2013•  ApprovaltobuildprototypefromALMAboardandADSCin2014March

•  PDR:July2013•  PostPDR:January2014•  Band1Op9calReview(internalreview):mee9ngbyJ.Lamb,J.Kooi,N.Whyborn,R.Hill,M.SugimotoinSan9ago,ChileinNov.2014.

•  Cri9calDesignReviewonJanuary19thto21st2016

Timeline

•  Begin#1to#3produc9oncartridgestar9ngfromMarch2016

•  LOCDMR:October2016•  Band1MRR:October2016•  Firstcartridgetestwithactualcryostat:Fall2016@NRAO

•  Fristcartridgetes9ngatOSF:Spring-Summer2017

•  Integra9onandtes9ng#4-#9produc9oncartridge:BeforeMay2017

•  Complete#73cartridgedeliveryby:December2019

Produc9onprocess

Cartridgeandkeycomponentsproduc9onrate

0

20

40

60

80

100

120

140

160

180

Jan-16 Aug-16 Mar-17 Sep-17 Apr-18 Oct-18 May-19 Dec-19

Cartridge

CLNA

LO

OMT

CurrentStatus

•  Integra9ngandtes9ngthePre-produc9oncartridgeSN#01

•  Workingonthesolarobserva9onopera9onmode.

(Poster,C-C,Chiong)•  Sealethebaselinedesign.

Overview

NRAO

HIA NAOJandUChile

RF:35-50GHz,35-52GHz(Besteffort)LO:31-40GHz,IF:4-12GHz,SSBTrx:25-32K

Overview

SystemNoiseTemperature:Pol.0

ReceiverNoiseTemperature:TRECUnCorrectedBand1CartridgeSN03Pol.0

10

15

20

25

30

35

40

34 36 38 40 42 44 46 48 50

Freq.RF(GHz)

Tr(K

) 3132333435363738

SystemNoiseTemperature:Pol.1

ReceiverNoiseTemperature:TRECUnCorrectedBand1CartridgeSN03Pol.1

10

15

20

25

30

35

40

34 36 38 40 42 44 46 48 50

Freq.RF(GHz)

Tr(K

) 3132333435363738

Contribu9onoftheop9cstothenoise

CLNAperformanceQA006

CLNAQA008

IFRipple:Pol0

IFRipple:Pol1

Op9calperformance

Pol0Farfieldandnearfieldpaaern

Pol1Farfieldandnearfieldpaaern