TY  - CONF
AU  - Edward Tong, C-Y
AU  - Loudkov, Denis N.
AU  - Paine, Scott N.
AU  - Marrone, Dan P.
AU  - Blundell, Raymond
PY  - 2005
DA  - 2005//
TI  - Vector measurement of the beam pattern of a 1.5 THz superconducting HEB receiver
T2  - Proc. 16[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 16[super:th] Int. Symp. Space Terahertz Technol.
SP  - 453
EP  - 456
KW  - NbTiN HEB mixers
AB  - Near-field vector beam pattern of the 1.5 THz superconducting Hot Electron Bolometer (HEB) receiver currently in operation in Northern Chile has been performed in our laboratory. Using an open waveguide probe, we have mapped both the amplitude and phase of the beam emerging from our 1.5 THz HEB receiver package, across a number of planes along the line of propagation of the radio-beam. With an integration time of about 100 ms per point, a signal-to-noise ratio of about 25 dB was achieved for a beam waist of 3.5 mm. These measurements have proved to be invaluable in achieving good alignment between the cryostat housing the HEB mixer and the remainder of the receiver and telescope optics. The accuracy of our beam measurement is estimated to be ±0.2 mm in position and ±5 arc minutes in angular displacement.
UR  - https://www.nrao.edu/meetings/isstt/2005.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1474), last updated on Mon, 17 May 2021 19:02:34 -0500
ID  - EdwardTong_etal2005
ER  -