Attachment RFQ-1333ND21QNB640525.pdf

IR bench TOM BOX

PEM

focusing mirror flat mirror flat mirror

IR beam sample

MCT detector

Beam is incident at 70 deg from surface normal

IR bench TOM BOX

PEM

focusing mirror flat mirror flat mirror

IR beam

MCT detector

QCM cell/heater gas flow in gas flow out windows MUST be at 70 deg with respect to surface normal

VNA/temp controller

6”

From center of sample to edge of TOM box is 6”

To be safe, I would say that backside of QCM sample/temp cell could be at most 5” from sample surface (white box), preferably less than 5” to not interfere w/ cabling access

Going to 70 deg (80 deg shown in picture) might cut that down a little more as the holder rotates (it is pretty flat at 80 deg)

Sample sits here

Cover to HTC-100 is ~ 4” wide

HTC-100 base is ~5.4” wide

The ruler is showing distance from sample surface to PEM (~4”)

The ruler is showing distance from sample surface to detector (~5.5”)

Beam size at the sample (aperture “32”) is 6.35 mm (top/bottom) but will elongate at 70 deg (left right) to 18.6 mm on the surface

Beam size at the sample (aperture “10”) is 3.75 mm (top/bottom) but will elongate at 70 deg (left right) to 11 mm on the surface

Beam size at cell windows will be marginally larger, depending on how far from the sample they are

Cell design needs to ensure that the mounting of the crystal provides clearance for the beam in-out

(11 mm)

18.6 mm

Aperture 32 (max for MCT) beam size at source 5.08 mm beam size at sample 6.35 mm Aperture 10 beam size at source 3.00 mm beam size at sample 3.75 mm