Differences between revisions 10 and 11
Revision 10 as of 2014-01-20 10:41:16
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Revision 11 as of 2014-01-20 10:44:43
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'''Array:''' Same as runs4,5,6. NICA 8e, 20nm Al IRAM. LO 1.955GHz, power per tone -50dBm (at cryostat input). '''Array:''' Same as runs4,5,6. NICA 8e, 20nm Al IRAM. LO 1.955GHz, power per tone -54dBm (at cryostat input incl. 2m flex cables).
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'''Pixels:''' pitch 1600 x 1600 micron. 224 pixels on design (16x16 array minus the corners). About 190 useful pixels. '''Pixels:''' pitch 1600 x 1600 micron. 224 pixels on design (16x16 array minus the corners). 196 identified resonances, about 180-190 useful pixels.
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'''Warm electronics:''' NIKEL01. RF source 192.168.1.196 (IFR 2024 ''Leasametric''). 0dB attenuation at cryo IN. DAC 20,23,20,25,32; niv 5 (measured -54dBm per tone at cryo input, including 2m flex cables). VLF2500 low-pass filter at cryostat input. '''Warm electronics:''' NIKEL01. RF source 192.168.1.196 (IFR 2024 ''Leasametric''). 0dB attenuation at cryo IN. DAC 20,23,20,25,32; niv 5 (measured -54dBm per tone at cryo input, including 2m flex cables). VLF2600 low-pass filter at cryostat input.
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'''Array:''' NICA8f1, 18nm Al film made at IEF, litho PTA. LO 1.35GHz, power per tone -54dBm (at cryostat input). '''Array:''' NICA8f1, 18nm Al film made at IEF, litho PTA. LO 1.363GHz, power per tone -55dBm (at cryostat input incl. 2m flex cables).
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'''Pixels:''' pitch 2305 x 2305 micron. 132 pixels on design (12x12 array minus the corners). 129 identified resonances, at least 125 useful pixels. '''Pixels:''' pitch 2305 x 2305 micron. 132 pixels on design (12x12 array minus the corners). 128 identified resonances, at least 125 useful pixels.
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'''Warm electronics:''' NIKEL02, RF source 192.168.1.192 (IFR 2025 ''IRAM''), 3dB attenuation at cryo IN, DAC 20,23,20,27,28; niv 5 (measured -55dBm per tone at cryo input, including 2m flex cables) VLF2250 at cryostat input. '''Warm electronics:''' NIKEL02, RF source 192.168.1.192 (IFR 2025 ''IRAM''), 3dB attenuation at cryo IN, DAC 20,23,20,27,35; niv 5 (measured -55dBm per tone at cryo input, including 2m flex cables). VLF2250 low pass filter at cryostat input.


240 GHz band


Array: Same as runs4,5,6. NICA 8e, 20nm Al IRAM. LO 1.955GHz, power per tone -54dBm (at cryostat input incl. 2m flex cables).

Pixels: pitch 1600 x 1600 micron. 224 pixels on design (16x16 array minus the corners). 196 identified resonances, about 180-190 useful pixels.

Cold electronics: SiGe Caltech amplifier "Florence" (gain 40dB, 1dB compression point 0dBm integrated power, Noise T around 6K).

Warm electronics: NIKEL01. RF source 192.168.1.196 (IFR 2024 Leasametric). 0dB attenuation at cryo IN. DAC 20,23,20,25,32; niv 5 (measured -54dBm per tone at cryo input, including 2m flex cables). VLF2600 low-pass filter at cryostat input.

Optics and spectrum: Same optical configuration as run 4 and 5. Except one filter (LPE 9cm-1) less compared to run 6. Also, using corrugated lenses (were smooth in previous runs) at 4K and 100mK. Spectrum peaking at 270 GHz (FWHM=230-290GHz).

spectrum_run7_1mm.jpg

Figure: Response spectrum measured in Grenoble on the 1mm array used for run7. Run PT33 (for more information see ELOG).

ASCII data for the spectrum on the pixel 1 (frequency(GHz), Response (AU)): pix1_1mm


150 GHz band


Array: NICA8f1, 18nm Al film made at IEF, litho PTA. LO 1.363GHz, power per tone -55dBm (at cryostat input incl. 2m flex cables).

Pixels: pitch 2305 x 2305 micron. 132 pixels on design (12x12 array minus the corners). 128 identified resonances, at least 125 useful pixels.

Cold electronics: SiGe Caltech amplifier SN 84 (unchanged), (gain 40dB, 1dB compression point 0dBm integrated power, noise T around 4K).

Warm electronics: NIKEL02, RF source 192.168.1.192 (IFR 2025 IRAM), 3dB attenuation at cryo IN, DAC 20,23,20,27,35; niv 5 (measured -55dBm per tone at cryo input, including 2m flex cables). VLF2250 low pass filter at cryostat input.

Optics and spectrum: Same optical configuration as run 4,5,6. Just using corrugated lenses (were smooth in previous runs) at 4K and 100mK. Spectrum peaking at 155 GHz.

spectrum_run7_2mm.jpg

Figure: Response spectrum measured in Grenoble on the 2mm array used for run 7 (FWHM=135-170GHz). Run PT33 (for more information see ELOG).

ASCII data for the spectrum on the pixel 1 (frequency(GHz), Response (AU)): pix1_2mm


BASE PARAMETER FILE FOR RUN7


Param file to be used as reference for run7, obtained with LN2 close to the pupil. 196 resonances at 1mm, 128 at 2mm, 40 OFF each

DetectorInformation2014N7 (last edited 2014-01-21 13:41:46 by NikaBolometer)