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Entry  Wed May 25 14:32:12 2022, Radhika, Summary, Emissivity estimation, List of Megastat upgrades for emissivity estimation 
    Reply  Thu May 26 13:12:25 2022, Radhika, Summary, Emissivity estimation, List of Megastat upgrades for emissivity estimation 
    Reply  Fri May 27 17:33:24 2022, Radhika, Summary, Emissivity estimation, List of Megastat upgrades for emissivity estimation IMG_3493.jpegIMG_3494.jpegIMG_3492.jpegIMG_1633.jpeg
Message ID: 2775     Entry time: Fri May 27 17:33:24 2022     In reply to: 2772
Author: Radhika 
Type: Summary 
Category: Emissivity estimation 
Subject: List of Megastat upgrades for emissivity estimation 

[Stephen, Radhika]

Today we further discussed ideas for the enclosure, suspension/support, and heat actuation for wafers in Megastat. 

Enclosure: We re-painted the inner surface of the inner shield with aquadag, including the top side of the bottom lip [Attachments 1,2]. The folded sheets of aluminum foil covering the apertures were unbolted and also painted with aquadag [Attachment 3]. 

Wafer support and heat actuation: Attachment 4 shows sketches and a plan forward (drawn by Stephen). The first round of upgrades includes the components underlined in blue: a baseplate to house the points of contact to the wafer, the ceramic ball bearings which will serve as the points of contact, an aquadag-painted sheet metal insert that will bolt down to the coldplate, and a mount for a Maglite mini flashlight. 

We will obtain more wire-wound resistors to serve as a back-up to flashlight heating, if the need arises.

Attachment 1: IMG_3493.jpeg  142 kB  Uploaded Fri May 27 18:43:01 2022  | Hide | Hide all
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Attachment 2: IMG_3494.jpeg  132 kB  Uploaded Fri May 27 18:43:11 2022  | Hide | Hide all
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Attachment 3: IMG_3492.jpeg  140 kB  Uploaded Fri May 27 18:43:25 2022  | Hide | Hide all
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Attachment 4: IMG_1633.jpeg  141 kB  Uploaded Fri May 27 18:43:37 2022  | Hide | Hide all
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