Horns & Switches: status
In this document, details about the horns, switches, and their assembly for the QUBIC project are provided. It covers the characterization of horns at different frequencies, VNA tests, assembly of 64 elements back-to-back, control board design, and more. Various images are included to illustrate the components and processes involved in the project.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
Horns & Switches: status Inputs from: APC, NUIM, U Cardiff, U Manchester, UNIMI, UNIMIB 2/17/2025 QUBIC Meeting LAL sept 2016
Horns 150/220 UNIMI 2/17/2025 QUBIC Meeting LAL sept 2016
Horns 150/220 Characterisation: 1. VNA test @ 150 GHz of the horns alone is foreseen. An interface flange built on purpose is available. 2. VNA test @ 220 GHz is possible (UNIMIB), although a very difficult measurement. 3. Possible test with incoherent detectors and thermal (or active) sources? (to be discussed with B.Maffei). 4. Use the 8x8 Demonstrator as a test bench. Philosophy: as long as this activity doesn t retard/interfere with Demonstrator assembly, let s try to learn as much as we can! 2/17/2025 QUBIC Meeting LAL sept 2016
Switch/Horn Assembly: the TD Assembly of the 64 elements back-to-back The block will soon be populated with switches 2/17/2025 QUBIC Meeting LAL sept 2016
Switch/Horn Assembly: the TD Horn Test are made at UniMiB lab at room temperature in D band (110-170 GHz) both on 2x2 platelet prototype and 8x8 technological demonstrator manufactured by UniMi 2/17/2025 QUBIC Meeting LAL sept 2016
Switch/Horn Assembly: the TD Control board designed and assembled in-house Principle of operation: inductive reactance depends on the ferrite position inside the coil. Real and Imaginary part of impedance is determined by few kHz monitor signal Spartan-6 FPGA operated Able to control 16 switches 4 boards for 64 switches Scalable design VI interface 2/17/2025 QUBIC Meeting LAL sept 2016
Towards the 20x20 The footprint (UniMi) 6 5 4 3 2 1 6,00 M3x0.5 - TAPPED HOLES (BOLTS TO HORNS BLOCK) A ( 2 : 1 ) 0,30 A D D 3,00 - HORN ALIGN. PIN x4 1,906 - ANTENNA HOLES R179,25 5,91 3,20 - CLEARANCE HOLES (BOLTS TO SWITCHES BLOCK) C C 164,50 QUBIC400 Horns Block Bottom flange (rev. 01) 63,00 B B 329,00 28,00 7,00 14,00 21,00 1,50 358,50 28,00 84,00 147,00 A A Data Data Progettato da Controllato da Approvato da 164,50 13/09/2016 FP Qubic400_Horns_BottomFlange_PROV Universit degli Studi di Milano Dipartimento di Fisica Edizione Foglio F_1quart_01 1 / 1 01 6 5 4 3 2 1 2/17/2025 QUBIC Meeting LAL sept 2016
Towards the 20x20 Platelets ready to be manufactured. Critical point is the horn-switch interfaces (UNIMI). Planarity requirements of the interface with horns to be defined. Centering pins? How many? Where? Simulate misalignement effects at 150 GHz (use these results for tolerancing) Integration of the system into cryostat should be checked (APC & La Sapienza) Assembly and wiring of 400 switches may be a tricky task. The current assembly of 8x8 will help define a good strategy 2/17/2025 QUBIC Meeting LAL sept 2016
