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Apollinari, G.

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MO301 Overview of the High Intensity Neutrino Source Linac R&D Program at Fermilab 36
 
  • R.C. Webber, G. Apollinari, J.-P. Carneiro, I.G. Gonin, B.M. Hanna, S. Hays, T.N. Khabiboulline, G. Lanfranco, R.L. Madrak, A. Moretti, T.H. Nicol, T.M. Page, E. Peoples, H. Piekarz, L. Ristori, G.V. Romanov, C.W. Schmidt, J. Steimel, I. Terechkine, R.L. Wagner, D. Wildman
    Fermilab, Batavia
  • P.N. Ostroumov
    ANL, Argonne
  • W.M. Tam
    IUCF, Bloomington, Indiana
 
 

Funding: Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.
The High Intensity Neutrino Source (HINS) linac R&D program at Fermilab aims to construct and operate a first-of-a-kind, 60 MeV, superconducting H- linac. The machine will demonstrate acceleration of high intensity beam using superconducting spoke cavities from 10 MeV, solenoidal focusing optics throughout for axially-symmetric beam to control halo growth, and operation of many cavities from a single high power rf source for acceleration of non-relativistic particles.

 

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Slides

 
MOP012 High Power Test of Room Temperature Spoke Cavities for HINS at Fermilab 79
 
  • W.M. Tam, G. Apollinari, T.N. Khabiboulline, R.L. Madrak, A. Moretti, L. Ristori, G.V. Romanov, J. Steimel, R.C. Webber, D. Wildman
    Fermilab, Batavia
  • W.M. Tam
    IUCF, Bloomington, Indiana
 
 

The High Intensity Neutrino Source (HINS) R&D program at Fermilab will build a new 65 MeV test linac to demonstrate new technologies for application in a high intensity hadron linac front-end. The HINS warm section is composed of an ion source, a radio frequency quadrupole, a medium energy beam transport and 16 room temperature Crossbar H-type (RT-CH) cavities that accelerate the beam to 10 MeV (β=0.1422). The RT-CH cavities are separated by superconducting solenoids enclosed in individual cryostats. Beyond 10 MeV, the design uses superconducting spoke resonators. In this paper, we illustrate the completion of four RT-CH cavities and explain latest modifications in the mechanical and radio frequency (RF) designs. Cavities RF measurements and tuning performed at Fermilab are also discussed. Descriptions of the HINS R&D Facility including high power RF, vacuum, cooling and low level RF systems will be given. Finally, the history of RF conditioning and the results of high power tests of RT-CH cavities will be discussed.

 
MOP013 Focusing Solenoids for the HINS Linac Front End 82
 
  • I. Terechkine, G. Apollinari, J. DiMarco, Y. Huang, D.F. Orris, T.M. Page, R. Rabehl, M.A. Tartaglia, J.C. Tompkins
    Fermilab, Batavia
 
 

Low energy part of the linac for the HINS project at Fermilab will use superconducting solenoids as beam focusing elements (lenses). While lenses for the conventional, DTL-type accelerating section of the front end require individual cryostats, in the superconducting accelerating sections solenoids will be installed inside rf cryomodules. Some of the lenses in the conventional and in the superconducting sections are equipped with horizontal and vertical dipole correctors. Lenses for the conventional DTL section are in the stage of production with certification activities ongoing at Fermilab. For the superconducting sections of the linac, several prototypes of focusing lenses were built and tested. Solenoid magnetic axis is used for alignment of the lenses in the transport channel of the accelerator. Corresponding technique has been developed at Fermilab and is used during certification of the production lenses for the DTL section. This report will summarize main design features, parameters, and test results of the focusing lenses of the linac. Magnetic axis alignment technique will also be described.

 
MOP041 The Fabrication and Initial Testing of the HINS RFQ 160
 
  • G. Apollinari, B.M. Hanna, T.N. Khabiboulline, A. Lunin, A. Moretti, T.M. Page, G.V. Romanov, J. Steimel, R.C. Webber, D. Wildman
    Fermilab, Batavia
  • P.N. Ostroumov
    ANL, Argonne
 
 

Fermilab is designing and building the HINS front-end test facility. The HINS proton linear accelerator consists of a normal-conducting and a superconducting section. The normal-conducting (warm) section is composed of an ion source, a 2.5 MeV radio frequency quadrupole (RFQ), a medium energy beam transport, and 16 normal-conducting crossbar H-type cavities that accelerate the beam to 10 MeV. Production of 325 MHz 4-vane RFQ is recently completed. This paper presents the design concepts for this RFQ, the mechanical design and tuning results. Issues that arose during manufacturing of the RFQ will be discussed and specific corrective modifications will be explained. The preliminary results of initial testing of RFQ at the test facility will be presented and comparisons with the former simulations will also be discussed.

 
THP030 High Gradient Test Results of 325 MHz Single Spoke Cavity at Fermilab 851
 
  • G. Apollinari, I.G. Gonin, T.N. Khabiboulline, G. Lanfranco, A. Mukherjee, J.P. Ozelis, L. Ristori, G.V. Romanov, D.A. Sergatskov, R.L. Wagner, R.C. Webber
    Fermilab, Batavia
  • J.D. Fuerst, M.P. Kelly, K.W. Shepard
    ANL, Argonne
 
 

The High Intensity Neutrino Source (HINS) project represents the current effort at Fermilab to develop 60 MeV Proton/H- Linac as a front end for possible use in the Project X. Eighteen superconducting β=0.21 single spoke resonators (SSR), operating at 325 MHz, comprise the first stage of the HINS cold section. Two SSR cavities have now been fabricated in industry under this project and undergone surface treatment that is described here. We report the results of high gradient tests of the first SSR in the Vertical Test System (VTS). The cavity successfully achieved accelerating gradient of 13.5 MV/m; higher than the design operating gradient of 10 MV/m. The history of multipacting and conditioning during the VTS tests will be discussed. Experimental measurements of the cavity mechanical and vibration properties including Lorenz force detuning and measurements of X-rays resulting from field emission are also presented.