- ✁
- ☎
- ✁
- ✲
A Muon Collider is seen as a promising machine for the future of high energy physics [1]. Particle collisions in the Muon Collider will occur through the intersection of two circulating beams inside a storage ring. Requirements and
- perating conditions for a Muon Collider pose significant
challenges to superconducting magnet designs and technologies [2]. For instance, contrary to proton machines, the ring dipole magnets should allow the muon decay products to escape the magnet helium volume. The IR quadrupoles must have a large aperture to accommodate the large decay deposition and large beam size at the expected *. For the IR dipoles, the required good field quality region needs to have a vertical aspect ratio of 2:1. This imposes additional challenges for the magnet design.
❆ ❀ ✻ ✺ ✴ ✷ ✴ ✳ ✾ ✺ ✶ ✿ ✿ ✷ ✾ ✻ ❘ ✳ ✺ ✵ ❀ ✳ ✾ ✳ ✺ ✶ ✸ ✵ ✺ ✰ ✽ ✲ ✰ ✱ ✲ ✳ ✴ ✵ ✶ ✷ ✸ ✹ ✳ ✺ ✻ ✼ ✱ ✺ ✵ ✶ ✹ ✻ ✳ ✺ ✰ ✽ ✺ ✶ ✴ ✳ ✾ ✲ ✰ ✱ ✹ ✶ ✲ ✵ ✻ ✱ ✼ ✿ ✷ ✼ ✱ ✳ ✵ ✺ ✽ ✰ ✾ ✵ ❀ ✳ ✺ ✵ ✰ ✾ ✷ ✼ ✳ ✾ ✻ ✱ ✼ ✰ ✽ ✷ ❁ ✶ ✰ ✱ ✯ ✰ ✸ ✸ ✻ ✹ ✳ ✾ ❂ ✻ ✵ ❀ ✷ ❃ ❄ ❅ ❆ ✳ ❇ ✲ ❄ ✰ ❄ ✿ ❄ ✳ ✱ ✳ ✾ ✼ ❈ ✷ ✱ ✹ ✷ ✱ ✷ ❉ ✳ ✾ ✷ ✼ ✳ ✸ ✶ ✿ ✻ ✱ ✰ ✺ ✻ ✵ ❈ ✰ ✽ ❃ ❊ ❋- ✲
Table 1: MC Storage Ring Parameters.
❵ ❛ ❜ ❛ ❝ ❞ ❡ ❞ ❜ ❢ ❣ ❤ ❡ ✐ ❛ ❥ ❦ ❞ ❧ ♠ ♥ ♦ ♠ ♣ ♠ q r s t ♠ ✉ ✈ ✇ ① ② ③ ④ ♦ ⑤ ♣ ♥ ⑥ ⑦ ⑤ ⑧ ④ ⑥ ♠ ⑨ ⑤ ♠ ⑥ ⑦ t ⑩ ✈ ❶ ⑤ q ❷ ❸ ♦ ⑨ ♠ q ♠ ♣ ❷ ♠ ❹ ♦ ❺ ✇ ② ❻ ④ ♦ ♠ ♣ ❼ ❸ ♦ ♥ ❷ ❷ ♠ ⑧ ❼ ♥ ♣ ❷ ♠ ❽ ❾ ⑩ ✇ ❺ t q ♥ ♣ ❿ ➀ ♠ q ❿ ♠ ♠ ♦ ⑤ ❼ ❼ ♥ ♣ ❷ ♠ ➁ ! ➂·mm·mrad
❺ ② ③ ❸ ♦ ➃ ♠ q ④ ⑨ ➄ ➅ ❿ ❺*
❷ ♦ ⑩Figure 1: MC IR layout and beam size in magnets.
➆ ➇ ➈ ❱ ➉ ❲ ❳ ➉ ➊ ❬ ❯ ❳ ➉ ➆ ➉ ❱ ❲ ➋ ❁ ✶ ✰ ✱ ✯ ✰ ✸ ✸ ✻ ✹ ✳ ✾ ✵ ✷ ✾ ✼ ✳ ✵ ✴ ✷ ✾ ✷ ✿ ✳ ✵ ✳ ✾ ✺ ✷ ✾ ✳ ✺ ✶ ✿ ✿ ✷ ✾ ✻ ❘ ✳ ✹ ✻ ✱ ❆ ✷ ▲ ✸ ✳ ❃ ❄ ❆ ❀ ✳ ✺ ✵ ✰ ✾ ✷ ✼ ✳ ✾ ✻ ✱ ✼ ✸ ✷ ✵ ✵ ✻ ✲ ✳ ✷ ✱ ✹ ✵ ❀ ✳ ➌ ❪ ✸ ✷ ❈ ✰ ✶ ✵ ✲ ✰ ✱ ✺ ✻ ✺ ✵ ✳ ✱ ✵ ❂ ✻ ✵ ❀ ✵ ❀ ✳ ✺ ✳ ✴ ✷ ✾ ✷ ✿ ✳ ✵ ✳ ✾ ✺ ❂ ✳ ✾ ✳ ✹ ✳ ❉ ✳ ✸ ✰ ✴ ✳ ✹ ✷ ✱ ✹ ✾ ✳ ✴ ✰ ✾ ✵ ✳ ✹ ✻ ✱ ➍ ➎ ➏ ❄ ❆ ❀ ✳ ❁ ✯ ✺ ✵ ✰ ✾ ✷ ✼ ✳ ✾ ✻ ✱ ✼ ✻ ✺ ▲ ✷ ✺ ✳ ✹ ✰ ✱ ❃ ❊ ❆ ✹ ✻ ✴ ✰ ✸ ✳ ✿ ✷ ✼ ✱ ✳ ✵ ✺ ❄ ❆ ❀ ✳ ✺ ✿ ✷ ✸ ✸ ✵ ✾ ✷ ✱ ✺ ❉ ✳ ✾ ✺ ✳ ▲ ✳ ✷ ✿ ✺ ✻ ❘ ✳ ❫ " ➐ ❊ ❄ ❅ ✿ ✿ ❴ ✾ ✳ ❖ ✶ ✻ ✾ ✳ ✺ ✷ ✺ ✿ ✷ ✸ ✸ ✷ ✴ ✳ ✾ ✵ ✶ ✾ ✳ ✰ ✱ ✸ ❈ ➐ ❃ ❊ ✿ ✿ ✻ ✱ ✹ ✻ ✷ ✿ ✳ ✵ ✳ ✾ ❄ ➑ ✰ ❂ ✳ ❉ ✳ ✾ ➒ ✵ ❀ ✳ ✿ ✶ ✰ ✱ ✹ ✳ ✲ ✷ ❈ ✴ ✷ ✾ ✵ ✻ ✲ ✸ ✳ ✺ ✷ ✱ ✹ ✵ ❀ ✳ ❊ ❄ ❅ ❙ ❚ P ✿ ✹ ❈ ✱ ✷ ✿ ✻ ✲ ❀ ✳ ✷ ✵ ✸ ✰ ✷ ✹ ✷ ✺ ✺ ✰ ✲ ✻ ✷ ✵ ✳ ✹ ❂ ✻ ✵ ❀ ✵ ❀ ✳ ✿ ✷ ✱ ✹ ✸ ✰ ✲ ✷ ✸ ✻ ❘ ✳ ✹ ✻ ✱ ✵ ❀ ✳ ❀ ✰ ✾ ✻ ❘ ✰ ✱ ✵ ✷ ✸ ✹ ✻ ✾ ✳ ✲ ✵ ✻ ✰ ✱ ✰ ✱ ✵ ❀ ✳ ✻ ✱ ✱ ✳ ✾ ✺ ✻ ✹ ✳ ✰ ✽ ✵ ❀ ✳ ✺ ✵ ✰ ✾ ✷ ✼ ✳ ✾ ✻ ✱ ✼ ➒ ✱ ✳ ✳ ✹ ✵ ✰ ▲ ✳ ✻ ✱ ✵ ✳ ✾ ✲ ✳ ✴ ✵ ✳ ✹ ✰ ✶ ✵ ✺ ✻ ✹ ✳ ✰ ✽ ✵ ❀ ✳ ✿ ✷ ✼ ✱ ✳ ✵ ❀ ✳ ✸ ✻ ✶ ✿ ❉ ✳ ✺ ✺ ✳ ✸ ✰ ✱ ✷ ✺ ✷ ✽ ✳ ✹ ✻ ✺ ✵ ✷ ✱ ✲ ✳ ✽ ✾ ✰ ✿ ✴ ✾ ✻ ✿ ✷ ✾ ❈ ▲ ✳ ✷ ✿ ✺ ❄ ❆ ❀ ✳ ✽ ✻ ✱ ✷ ✸ ✽ ✰ ✲ ✶ ✺ ✰ ✽ ✿ ✶ ✰ ✱ ▲ ✳ ✷ ✿ ✺ ✻ ✺ ✴ ✾ ✰ ❉ ✻ ✹ ✳ ✹ ▲ ❈ ❖ ✶ ✷ ✹ ✾ ✶ ✴ ✰ ✸ ✳ ✹ ✰ ✶ ▲ ✸ ✳ ✵ ✺ ✽ ✰ ✾ ✿ ✳ ✹ ▲ ❈ ✽ ✻ ❉ ✳ ✺ ❀ ✰ ✾ ✵ ❖ ✶ ✷ ✹ ✾ ✶ ✴ ✰ ✸ ✳ ✿ ✷ ✼ ✱ ✳ ✵ ✺ ➓ ❃ ◗ ➓ ❅ ❄ ❆ ❀ ✳ ▲ ✳ ✱ ✹ ✻ ✱ ✼ ✹ ✻ ✴ ✰ ✸ ✳ ✺ ➔ ❃ ➒ ✴ ✸ ✷ ✲ ✳ ✹ ✻ ✿ ✿ ✳ ✹ ✻ ✷ ✵ ✳ ✸ ❈ ✷ ✽ ✵ ✳ ✾ ✵ ❀ ✳ ✽ ✻ ✱ ✷ ✸ ◗ ✽ ✰ ✲ ✶ ✺ ✹ ✰ ✶ ▲ ✸ ✳ ✵ ➒ ✼ ✳ ✱ ✳ ✾ ✷ ✵ ✳ ✷ ✸ ✷ ✾ ✼ ✳ ✹ ✻ ✺ ✴ ✳ ✾ ✺ ✻ ✰ ✱ ✽ ✶ ✱ ✲ ✵ ✻ ✰ ✱ ✷ ✵ ✵ ❀ ✳ ✸ ✰ ✲ ✷ ✵ ✻ ✰ ✱ ✰ ✽ ✵ ❀ ✳ ✺ ✳ → ✵ ✶ ✴ ✰ ✸ ✳ ✱ ✳ ✷ ✾ ✳ ✺ ✵ ✵ ✰ ✵ ❀ ✳ ➌ ➣ ✵ ✰ ✲ ✰ ✿ ✴ ✳ ✱ ✺ ✷ ✵ ✳ ✽ ✰ ✾ ✵ ❀ ✳ ❉ ✳ ✾ ✵ ✻ ✲ ✷ ✸ ✲ ❀ ✾ ✰ ✿ ✷ ✵ ✻ ✲ ✻ ✵ ❈ ❄ ❆ ❀ ✳ ➌ ❪ ✸ ✷ ❈ ✰ ✶ ✵ ❂ ✻ ✵ ❀ ✵ ❀ ✳ ❉ ✳ ✾ ✵ ✻ ✲ ✷ ✸ ✷ ✱ ✹ ❀ ✰ ✾ ✻ ❘ ✰ ✱ ✵ ✷ ✸ ▲ ✳ ✷ ✿ ✺ ✻ ❘ ✳ ❉ ✷ ✾ ✻ ✷ ✵ ✻ ✰ ✱ ✺ ✻ ✺ ✺ ❀ ✰ ❂ ✱ ✻ ✱ ↔ ✻ ✼ ❄ ❃ ❄The IR quadrupoles are divided into short pieces Q1- Q4 to provide space for protecting tungsten masks.
❆ ❀ ✳ ✺ ✴ ✷ ✲ ✳ ▲ ✳ ✵ ❂ ✳ ✳ ✱ ✵ ❀ ✳ ➓ ↕ ✷ ✱ ✹ ➓ ❅ ✻ ✺ ✾ ✳ ✺ ✳ ✾ ❉ ✳ ✹ ✽ ✰ ✾ ▲ ✳ ✷ ✿ ✹ ✻ ✷ ✼ ✱ ✰ ✺ ✵ ✻ ✲ ✺ ✷ ✱ ✹ ✲ ✰ ✾ ✾ ✳ ✲ ✵ ✰ ✾ ✺ ❄ ❆ ❀ ✳IR magnet design parameters are summarized in Table 2. The aperture of the magnets is determined by the following criterion Dx/y=10smax+20 mm. Table 2: IR Magnet Parameters.
➙ ❛ ➛ ❣ ❞ ❡ ❡ ➜ ➝ ❞ ➙ ❛ ➛ ❣ ❞ ❡ ❤ ➞ ❥ ❞ ❣ ➛ ❡ ➟ ➠ ❝ ➙ ❛ ➛ ❣ ❞ ❡ ❛ ➝ ❞ ❜ ❡ ❦ ❜ ❞ ➡ ➢ ➤ ➥ ➠ ❝ ❝ ➦ ➧ ➨ ➩ ➫ ➧ ➨ ➭ ➠ ➯ ➲ ❝ ➩ ➯ ➭ ➳ ⑩ ⑩ ✇ ② ① ✈ ❺ ② ✈ ➳ ❺ ⑩ ✇ ① ⑩ ✈ ✈ ⑩ ➵ ① ➳ ➸ ⑩ ✇ ① ⑩ ② ✈ ⑩ ➸ ✈ ➳ ➺ ⑩ ✇ ① ⑩ ② ✈ ⑩ ➸ ✈ ➳ ② ⑩ ✇ ✈ ⑩ ② ✈ ➻ ② ❧ ⑩ ➼ ✇ ✈ ① ② ➽ ⑩ ② ✈ ➾ ➵ ➚ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➪ ➶ ➹ ➘ ➴ ➷ ➬ ➮ ➱ ➱ ➘ ➴ ✃ ❐ ❒ ❮ ❰ Ï ❐ ➴ Ð Ñ Ò ❐ ➬ ❐ Ó ➴ Ô Õ Ö × × Ñ Ó Ø Ô ❐ Ù Ú Ú Û ➮ Ø ❒ ❐ ➴ Û ➘ Ø ✃ ➴ Ó Ô ✃ Ü Ý Þ Ö Û ß à Þ ß á Û â ã ã ä å æ ç Ñ ✃ Õ ✃ Õ ❐ è é ê é Ü ë Ý é ì í × ➘ ❮ Ñ Ø î ï Ø Ó × é ð ➘ ñ