Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results

Shemyakin, Alexander; Baffes, Curtis; Carneiro, Jean-Paul; Chase, Brian; Chen, Alex; Einstein-Curtis, Joshua; Frolov, Daniil; Hanna, Bruce; Lebedev, Valeri; Prost, Lionel; Richard, Christopher; Saewert, Gregory; Saini, Arun; Sharma, Dheeraj; Sun, Ding

doi:10.18429/JACoW-HB2018-THP1WC03

Title: Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results

Full Record
Other Related Research

Abstract

The PIP-II program of upgrades proposed for the Fermilab accelerator complex, is centered around a 800 MeV, 2 mA CW SRF linac. A unique feature of the PIP-II linac is the capability to form a flexible bunch structure by removing a pre-programmed set of bunches from a long-pulse or CW 162.5 MHz train, coming from the RFQ, within the 2.1-MeV Medium Energy Beam Transport (MEBT) section. The MEBT chopping system consists of two travelling-wave kickers working in sync followed by a beam absorber. The prototype components of the chopping system, two design variants of the kickers and a 1/4-size absorber, have been installed in the PIP-II Injector Test (PIP2IT) accelerator and successfully tested with beam of up to 5 mA. In part, one of the kickers demonstrated a capability to create an aperiodic pulse sequence suitable for synchronous injection into the Booster while operating at 500 V and average switching frequency of 44 MHz during 0.55 ms bursts at 20 Hz. This report presents the design of the PIP-II MEBT chopping system and results of prototypes testing at PIP2IT.

Authors:

^[1];

^[1]; Carneiro, Jean-Paul ^[1]; Chase, Brian ^[1];

^[1]; Einstein-Curtis, Joshua ^[1]; Frolov, Daniil ^[1]; Hanna, Bruce ^[1];

^[1];

^[1]; Richard, Christopher ^[2];

^[1]; Saini, Arun ^[1]; Sharma, Dheeraj ^[3]; Sun, Ding ^[1]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Michigan State Univ., East Lansing, MI (United States)
Raja Ramanna Center for Advanced Technology (RRCAT) (India)

Publication Date:: 2018-07-01

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1468406

Report Number(s):: FERMILAB-CONF-18-229-AD
1689697

DOE Contract Number:: AC02-07CH11359

Resource Type:: Conference

Resource Relation:: Conference: 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Daejon (Korea, Rep. of), 17-22 Jun 2018

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS

Citation Formats


                    Shemyakin, Alexander, Baffes, Curtis, Carneiro, Jean-Paul, Chase, Brian, Chen, Alex, Einstein-Curtis, Joshua, Frolov, Daniil, Hanna, Bruce, Lebedev, Valeri, Prost, Lionel, Richard, Christopher, Saewert, Gregory, Saini, Arun, Sharma, Dheeraj, and Sun, Ding. Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results.  United States: N. p., 2018. 
        Web.  doi:10.18429/JACoW-HB2018-THP1WC03.

Copy to clipboard


                    Shemyakin, Alexander, Baffes, Curtis, Carneiro, Jean-Paul, Chase, Brian, Chen, Alex, Einstein-Curtis, Joshua, Frolov, Daniil, Hanna, Bruce, Lebedev, Valeri, Prost, Lionel, Richard, Christopher, Saewert, Gregory, Saini, Arun, Sharma, Dheeraj, & Sun, Ding. Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results.  United States.  https://doi.org/10.18429/JACoW-HB2018-THP1WC03

Copy to clipboard


                    Shemyakin, Alexander, Baffes, Curtis, Carneiro, Jean-Paul, Chase, Brian, Chen, Alex, Einstein-Curtis, Joshua, Frolov, Daniil, Hanna, Bruce, Lebedev, Valeri, Prost, Lionel, Richard, Christopher, Saewert, Gregory, Saini, Arun, Sharma, Dheeraj, and Sun, Ding. 2018.  
        "Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results".  United States.  https://doi.org/10.18429/JACoW-HB2018-THP1WC03.  https://www.osti.gov/servlets/purl/1468406.

Copy to clipboard


                    
@article{osti_1468406,

  title        = {Design of 162-MHz CW Bunch-by-Bunch Chopper and Prototype Testing Results},

  author       = {Shemyakin, Alexander and Baffes, Curtis and Carneiro, Jean-Paul and Chase, Brian and Chen, Alex and Einstein-Curtis, Joshua and Frolov, Daniil and Hanna, Bruce and Lebedev, Valeri and Prost, Lionel and Richard, Christopher and Saewert, Gregory and Saini, Arun and Sharma, Dheeraj and Sun, Ding},

  abstractNote = {The PIP-II program of upgrades proposed for the Fermilab accelerator complex, is centered around a 800 MeV, 2 mA CW SRF linac. A unique feature of the PIP-II linac is the capability to form a flexible bunch structure by removing a pre-programmed set of bunches from a long-pulse or CW 162.5 MHz train, coming from the RFQ, within the 2.1-MeV Medium Energy Beam Transport (MEBT) section. The MEBT chopping system consists of two travelling-wave kickers working in sync followed by a beam absorber. The prototype components of the chopping system, two design variants of the kickers and a 1/4-size absorber, have been installed in the PIP-II Injector Test (PIP2IT) accelerator and successfully tested with beam of up to 5 mA. In part, one of the kickers demonstrated a capability to create an aperiodic pulse sequence suitable for synchronous injection into the Booster while operating at 500 V and average switching frequency of 44 MHz during 0.55 ms bursts at 20 Hz. This report presents the design of the PIP-II MEBT chopping system and results of prototypes testing at PIP2IT.},

  doi          = {10.18429/JACoW-HB2018-THP1WC03},

  url          = {https://www.osti.gov/biblio/1468406},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

Copy to clipboard

Conference:

View Conference

https://doi.org/10.18429/JACoW-HB2018-THP1WC03

Other availability

Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

First Performance Results of the PIP2IT MEBT 200 Ohm Kicker Prototype

Conference Saewert, G.; Awida, M.; Chase, B.; ...

The PIP-II project is a program to upgrade the Fermilab accelerator complex. The PIP-II linac includes a 2.1 MeV Medium Energy Beam Transport (MEBT) section that incorporates a unique chopping system to perform arbitrary, bunch-by-bunch removal of 162.5 MHz structured beam. The MEBT chopping system will consist of two identical kickers working together and a beam absorber. One design of two having been proposed has been a 200 Ohm characteristic impedance traveling wave dual-helix kicker driven with custom designed high-speed switches. This paper reports on the first performance results of one prototype kicker built, installed and tested with beam atmore »« less
Full Text Available
Progress with PXIE MEBT Chopper

Conference Lebedev, V; Chen, A; Pasquinelli, R; ... - Conf.Proc.C1205201:2708-2710,2012

A capability to provide a large variety of bunch patterns is crucial for the concept of the Project X serving MW-range beam to several experiments simultaneously. This capability will be realized by the Medium Energy Beam Transport's (MEBT) chopping system that will divert 80% of all bunches of the initially 5 mA, 2.1 MeV CW 162.5 MHz beam to an absorber according to a pre-programmed bunch-by-bunch selection. Being considered one of the most challenging components, the chopping system will be tested at the Project X Injector Experiment (PXIE) facility that will be built at Fermilab as a prototype of themore »« less
Full Text Available
Design of PIP-II Medium Energy Beam Transport

Conference Saini, Arun; Baffes, Curtis; Chen, Alex; ...

The Proton Improvement Plan-II (PIP-II) is a proposed upgrade for the accelerator complex at Fermilab. The central piece of PIP-II is a superconducting radio frequency (SRF) 800 MeV linac capable of operating in both CW and pulse regimes. The PIP-II linac comprises a warm front-end that includes a H⁻ ion source capable of delivering 15-mA, 30-keV DC or pulsed beam, a Low Energy Beam Transport (LEBT), a 162.5 MHz, CW Radio-Frequency Quadrupole (RFQ) accelerating the ions to 2.1 MeV and, a 14-m Medium Energy Beam Transport (MEBT) before beam is injected into SRF part of the linac. This paper presentsmore »« less
https://doi.org/10.18429/JACoW-IPAC2018-TUPAF076

Full Text Available
Experimental Study of Beam Dynamics in the PIP-II MEBT Prototype

Conference Shemyakin, A.; Carneiro, J.-P.; Hanna, B.; ...

The Proton Improvement Plan, Stage Two (PIP-II) [1] is a program of upgrades proposed for the Fermilab injection complex, which central part is an 800 MeV, 2 mA CW SRF linac. A prototype of the PIP-II linac front end called PIP-II Injector Test (PIP2IT) is being built at Fermilab. As of now, a 15 mA DC, 30-keV H- ion source, a 2 m-long Low Energy Beam Transport (LEBT), a 2.1 MeV CW RFQ, followed by a 10 m Medium Energy Beam Transport (MEBT) have been assembled and commissioned. The MEBT bunch-by-bunch chopping system and the requirement of a low uncontrolledmore »« less
Full Text Available
Beam Optics Measurements in Medium Energy Beam Transport at PIP-II Injector Test Facility

Conference Saini, Arun; Carneiro, Jean-Paul; Hanna, Bruce; ...

The Proton Improvement Plan-II Injector Test (PIP2IT) is an accelerator test facility under construction at Fermilab that will provide a platform to demonstrate critical technologies and concept of the front-end of the PIP-II linear accelerator (linac). The PIP2IT warm front-end comprises a H⁻ ion source capable of delivering 15 mA, 30 keV DC or pulsed beam, a Low Energy Beam Transport (LEBT), a 162.5 MHz, CW Radio Frequency Quadrupole (RFQ) that accelerates the beam to 2.1 MeV and, a 14 m medium energy beam transport (MEBT). Presently, beamline up to the MEBT has been commissioned and operates routinely at themore »« less
https://doi.org/10.18429/JACoW-IPAC2018-TUPAF077

Full Text Available

Similar Records