Contribution to a conference proceedings/Contribution to a book

GSI-2019-01089

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Cavity Designs for the CH3 to CH11 of the Superconducting Heavy Ion Accelerator HELIAC

Conrad, T. ; Aulenbacher, K. ; Barth, W.GSI* ; Basten, M.GSI* ; Busch, M. ; Dziuba, F.GSI* ; Gettmann, V.GSI* ; Heilmann, M.GSI* ; Kürzeder, T.GSI* ; Lauber, S.GSI* ; List, J.GSI* ; Miski-Oglu, M.GSI* ; Podlech, H. ; Rubin, A.GSI* ; Schnase, A.GSI* ; Schwarz, M. ; Yaramyshev, S.GSI*

2019
JACoW Publishing, Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-SRF2019-TUP005  doi:10.15120/GSI-2019-01089

Abstract: In collaboration of GSI, HIM and Goethe University Frankfurt new designs for the CH-DTL cavities of the proposed Helmholtz Linear Accelerator (HELIAC) are developed. The cw-mode operated linac with a final energy of 7.3 MeV/u is intended for various experiments, especially with heavy ions at energies near the coulomb barrier. Currently twelve superconducting CH-cavities are considered which will be split into four different cryostats. Each cavity will be equipped with dynamic bellow tuners. After successful beam tests with CH⁰ as well as last surface preparations and ongoing rf tests with CH1 and CH2, CH3 to CH11 will be designed. Based on the successful test results, individual optimizations are carried out on the cavity design. Attention was paid to reduce production costs, for example by keeping the cavity diameter in each cryostat constant despite varying particle velocities and gap numbers. In addition to reaching the resonance frequency of 216.816 MHz and the influence of the bellow tuners on the frequency, the mechanical stability of the bellow tuners, the thermal effects on the cavity and the measures to mitigate secondary electron emission are investigated.

Note: "Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI."

---

Contributing Institute(s):

1. Linac (LIN)
2. HIM / Accelerator Design and Integrated Detectors (MDI)
3. UNILAC Post Stripper Upgrade (PSU)
4. Linac HF (LRF)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)

Appears in the scientific report 2019

---

Database coverage:
;

---