Deuterium Array Memo Series

Deuterium Array

Deuterium array

MIT Haystack Observatory developed an electronically steerable, multibeam array optimized for the 327 MHz hyperfine line of deuterium. The project involved the development of digital receivers and interference rejection techniques with the hope of benefiting then-future arrays like the Square Killometer Array (SKA) and Low Frequency Array (LOFAR).

The project which was jointly funded by the National Science Foundation under the Major Research Instrumentation (MRI) program with matching funds from MIT. The array was operated from June 2004 through June 2006. In July 2006 the array was taken apart and the electronics stored for possible future use in New Zealand.

Deuterium Array Memos

See also the Haystack RFI memo series.

001Development of digital receiver technology and the construction of a 327 MHz array optimized for the detection of the hyperfine deuterium lineA.E.E. Rogers20010806
002Estimates of the interference susceptibilityA.E.E. Rogers20010820
003The sensitivity of a sky noise dominated arrayA.E.E. Rogers20010823
004D1 array project bookA.E.E. Rogers20011101
005Single station spectra beam formerA.E.E. Rogers20011130
006Standing Waves in arraysA.E.E. Rogers20020423
007Suggested interference monitorA.E.E. Rogers20020423
008Intermodulation IP2 and IP3 requirements for D1 arrayA.E.E. Rogers20020429
009IP2 measurement on the bench and in the fieldA.E.E. Rogers20020430
010Measurement of the active antenna noise temperature from the sidereal variation of sky noiseA.E.E. Rogers20020522
011Expected D1 line strengths for the Galactic center and anticenterA.E.E. Rogers20020522
012RFI sensitivity: Galactic center vs anticenterA.E.E. Rogers20020522
013Calculation of the Gray Chip filter responseA.E.E. Rogers20020524
014Preliminary Gray Chip configuration -RevisedA.E.E. Rogers20020524
015Data rates in the station electronicsA.E.E. Rogers20020607
016Preliminary receiver gain settings and measurementsA.E.E. Rogers20021220
017Correlation from beam powerA.E.E. Rogers20031002
018Out of Band RejectionE. Kratzenberg20031104
019Estimate of RFI sensitivity for D1 arrayA.E.E. Rogers20030205
020Options or improving the rejection of RFI from horizonA.E.E. Rogers20030206
021Test sources for initial 4×4 arrayA.E.E. Rogers20030317
022Sensitivity of receivers to internal RFIA.E.E. Rogers20030402
023Useful normalizationsA.E.E. Rogers20030415
024Summary of performance on prototype array with 15 elementsA.E.E. Rogers20030428
025Proposed details of RFI reduction fenceA.E.E. Rogers20030424
026Proposed observing strategyA.E.E. Rogers20030424
027Array structure wind loading etcA.E.E. Rogers20030430
028Optimum orientation of crossed-dipoles in an arrayA.E.E. Rogers20030502
029Array sensitivity calibrationA.E.E. Rogers20030508
030Receiver control file keywordsA.E.E. Rogers20030519
031Impact of reducing the number of elements in each arrayA.E.E. Rogers20030516
032Some thermal considerations of receiver box coolingA.E.E. Rogers20030519
033Proposed use of geothermal heat exchange for receiver box temperature stabilizationA.E.E. Rogers20030630
034Tests of receiver box coolingA.E.E. Rogers20030630
035Notes on internally generated signals and shielding the D1 receiver boxA.E.E. Rogers20030708
036Tests for leakage from D1 receiver boxA.E.E. Rogers, K.A. Dudevoir20030729
037Performance of dual polarization 5×5 station arrayA.E.E. Rogers20030807
038System calibration from normalized beam powerA.E.E. Rogers20030820
039Sensitivity of D1 array to RFI from the Westford SiteA.E.E. Rogers20031003
040AUTOSCHEDing of beams and special modesA.E.E. Rogers20031009
041Output file formatA.E.E. Rogers20031119
042Some tests of shielding applied to the Westford radome baseR.B. Phillips, M.A. Poirier20031126
043Daily checks on the operation of each 5×5A.E.E. Rogers20031201
044RFI AmeliorationA.E.E. Rogers20041206
045Method for smoothing spectra and removing CW RFIA.E.E. Rogers20040218
046Improving the 5×5 sidelobes by adding a parasitic director element to each active dipoleA.E.E. Rogers20040218
047Expected effect of low level CW RFI on the D1 arrayA.E.E. Rogers20040305
048The effect of distant continuum RFIA.E.E. Rogers20040329
049Excision of continuum RFI transientsA.E.E. Rogers20040416
050Mechanism for low level apparent DC in digital down converterA.E.E. Rogers20040422
051RFI mitigation method for D1 arrayA.E.E. Rogers20040628
052Revision of expected D1 line strength in the anti-centerA.E.E. Rogers20040917
053Expected D1 line profiles from Galactic anti-centerA.E.E. Rogers20040802
054Optimization of D1 detectionA.E.E. Rogers20040816
055The theoretical D line strengthA.E.E. Rogers20040920
056Spectral error estimate in the case of spectral exclusionA.E.E. Rogers20040928
057Simulations of the noise in spectral exclusionA.E.E. Rogers20041004
058The statistics of cumulative spectraA.E.E. Rogers20041021
059Model of expected D1 emission from the local armA.E.E. Rogers20041022
060Combining data from separate regions to improve the detection probabilityA.E.E. Rogers20041101
061Expected levels of RFI reflected from the moon, earth satellites and aircraftA.E.E. Rogers20041119
062Alternative method of CW RFI ameliorationA.E.E. Rogers20041124
063Effects of a non-uniform interstellar mediumA.E.E. Rogers20041207
064Test of station do2 with ground plane pointing South at 30 elevationA.E.E. Rogers20041213
065Expected signal from the LMCA.E.E. Rogers20041220
n/aA Low Frequency Array Designed to Search for the 327 MHz line of DeuteriumA.E.E. Rogers et al20051001
066Potential future Deuterium 327 MHz line scienceA.E.E. Rogers20050906
067Possible configurations for the LMCA.E.E. Rogers20051101
068Low Cost Array for the 327 MHz Deuterium LineA.E.E. Rogers, K.A. Dudevoir, B.F. Fanous20070802
069RFI mitigation techniques used in the observations of the 327 MHz Deuterium LineA.E.E. Rogers20070802
070SNR of dense and sparse arraysA.E.E. Rogers20081100
071Calibration of aperture array with a single calibrated element.A.E.E. Rogers20080220