Hot Electron Bolometer (HEB)

The Hot e- HEB detector system includes:
• HDL5 Helium dewar with Liquid Nitrogen cooled heat shield
• Liquid Helium Capacity -1.2 liters
• Liquid Nitrogen Capacity - 0.8 liters
• LHe hold time >20 hours
• Field of view baffle installed on heat shield
• Vacuum valve with burst disc and KF25 vacuum fitting
• Liquid Nitrogen fill and removal attachments
• Liquid Helium pumping/safety attachment
• Enhanced InSb Hot-e detector (HEB)
• Electrical Responsivity >5kV/W
• Detector Optical responsivity >3.5kV/W
• Detector electrical NEP < 500 fW.Hz-1/2
• Useful Frequency range 200- 5000 microns
• Frequency response ~ 500 kHz (-3dB)
• Operating resistance 5kOhms to 20 kOhms
• Operating Temperature 4.2K
• DC coupled response
• Physical size of element 5 mm x 4.7 mm x 300 um
• Detector installed in gold-plated copper substrate
• Cone optic assembly
• Entrance = 0.5”
• Exit = 0.196”
• Length = 0.813”
• 1" diameter wedged, Teflon window with diamond powder coating
• C285 wedged filter, 0.75” diameter, installed in front of cone entrance
• ULN6 preamplifier