Second Topical Workshop on Microphonics, LLRF Workshop Series

24 Oct 2018, 08:00 → 26 Oct 2018, 18:00 US/Eastern

Dumbo and Navy Yard (NY Marriott at The Brooklyn Bridge)

Kevin S Smith (BNL)

Motivation:

Bring together a diverse group of experts spanning the key disciplines (LLRF, Mechanical and Cryogenic engineering) critical to the design and operation of SRF cavities and cryomodules, in particular those operated with high Q/narrow bandwidth and pulsed conditions.

Provide a basis for understanding the technologies and constraints which drive critical engineering decisions across these disciplines, and in particular the importance of a tightly integrated, cross discipline effort starting at the earliest practical point in a project.

Identify the key microphonic and detuning issues experienced in facilities currently operating, and lessons learned which can inform the design and installation of those under construction and being proposed. Present the latest developments in each discipline with the overall goal of producing quiet cryomodules, and addressing noise via both simple passive methods, and advanced active compensation techniques.

Event ID: 39010

Wednesday, 24 October

17:00 → 19:00 Registration Check In

18:00 → 20:00 Welcome Reception

Thursday, 25 October

08:00 → 08:15 Welcome and Information

Speakers: Curt Hovater (Jefferson Lab), Kevin S Smith (BNL)

Welcome_CH_KSS_MRCW18.pdf

Welcome_CH_KSS_MRCW18.pptx

08:15 → 10:25 Session 1: High Level Perspectives & Real World Experience

Convener: Kevin S Smith (BNL)

08:15 Microphonics and Resonance Control from the RF Perspective

Speaker: Mr Brian Chase (Fermilab)

Microphonics2.pptx

08:50 Cryomodule Design from the Cryo-Mechanical Perspective

Speaker: Zachary Conway (Argonne National Laboratory)

Conway Cryomodule 20181015 v2.pdf

09:25 Microphonics and Resonance Control from the Cryo-Mechanical Perspective - TTF XFEL Cryomod Design

Speaker: Kay Jensch (DESY)

2018_10_25_Microphonics_CryoMech_Jensch.pdf

2018_10_25_Microphonics_CryoMech_Jensch.pptx

09:50 Microphonics Diagnosis and Mitigation during LCLS-II Cryomodule Testing at FNAL

Speaker: Jeremiah Holzbauer (Fermilab)

MRCW18_Holzbauer_LCLS-II_Microphonics.pdf

MRCW18_Holzbauer_LCLS-II_Microphonics.ppt

MRCW18_Holzbauer_LCLS-II_Microphonics.pptx

10:15 Q & A

10:25 → 10:55 Coffee Break

10:55 → 12:30 Session 2: Vibration Studies and Remediation

Convener: Curt Hovater (Jefferson Lab)

10:55 Vibration studies on TTF cryomodules: A Summary of the Work Done So Far

Speaker: Serena Barbanotti

2018_10_25_TTFvibrations_Barbanotti.pdf

2018_10_25_TTFvibrations_Barbanotti.pptx

11:20 Passive Measures to Address Microphonics on Installed Systems

Speaker: Tom Powers (JLAB)

Powers Passive microphonics mitigation v1.pptx

11:45 MICROPHONICS STUDY OF ARIEL ACM1 TWO CAVITIES CRYOMODULE

Speaker: Yanyun MA (TRIUMF)

MICROPHONICS STUDY OF ARIEL ACM1 TWO CAVITIES CRYOMODULE.pdf

MICROPHONICS STUDY OF ARIEL ACM1 TWO CAVITIES CRYOMODULE.pptx

12:05 LHC SPS DQW Crab Cavity Cryomodule Experience

Speakers: Rama Calaga (CERN), Rama Calaga (BNL)

MRCW_Crabs_Calaga.pptx

12:25 Q &A

12:30 → 14:15 Group Photo - then Lunch - On Your Own

14:15 → 15:30 Session 3: Algorithms and Signal Processing

Convener: Mr Brian Chase (Fermilab)

14:15 ARC Algorithm Development for the LCLS II Project

Speaker: Warren Schappert (Fermi National Accelerator Laboratory)

ARC Algorithm Development for LCLS_II.PPTX

14:35 Superconducting Radio-Frequency Virtual Cavity for Hardware-in-the-Loop Testing of Control Algorithms

Speaker: Josu Jugo Garcia (University of the Basque Country)

MRCW18_NY.pdf

MRCW18_NY.pptx

14:55 Potential Application of Advanced Control Algorithm for Fast Tuner Control

Speaker: Shen Zhao (FRIB-MSU)

Potential Application of Advance Control Algorithm for Fast Tuner Control - MRCW18.pdf

Potential Application of Advance Control Algorithm for Fast Tuner Control - MRCW18.pptx

15:10 Cryomodule on a Chip

Speaker: Larry Doolittle (LBNL)

cmoc_talk.pdf

15:25 Q & A

15:30 → 16:00 Coffee Break

16:00 → 17:40 Session 4: Microphonics Sources, Experience and Control I

Convener: Mariusz Grecki (DESY)

16:00 CW Studies at DESY’s Cryomodule Test Bench

Speaker: Julien Branlard (DESY)

2018_10_25 - J.Branlard - Microphonics workshop - CW studies at CMTB.pdf

2018_10_25 - J.Branlard - Microphonics workshop - CW studies at CMTB.pptx

16:25 Vector Sum Accelerating Field Parameters Regulation of Single EX-FEL Module Working in CW Mode in High QL (6e7) Conditions

Speaker: Wojciech Cichalewski (Lodz University of Technology - Department of Microelectronics and Computer Science)

VS_regulation_high_Ql.pdf

VS_regulation_high_Ql.ppt

16:45 Microphonics, Transfer Function Characterization and Preliminary Active Piezo Compensation of a 56 MHz Beam Driven SRF Cavity at RHIC

Speaker: Freddy Severino (BNL)

2018_10_25_56MHzMicrophonics.pdf

2018_10_25_56MHzMicrophonics.pptx

17:05 Coupled Mechanical Oscillations in Multiple Cryomodule Driven by a Single Klystron

Speaker: Ramona Leewe (TRIUMF)

Microphonics2018.pdf

Microphonics2018.pptx

Rock&Roll.wmv

17:20 Fine Frequency Resolution Transfer Function Measurements of a Cavity System to Characterize High-Q Mechanical Resonances

Speaker: Philip Varghese (Fermilab)

MWorkshop2018_TF_Talk_Final.pdf

MWorkshop2018_TF_Talk_Final.pptx

17:35 Q & A

18:00 → 19:00 Tentative: Informal Q & A, Discussions

Friday, 26 October

08:00 → 08:05 Announcements

Speakers: Curt Hovater (Jefferson Lab), Kevin S Smith (BNL)

08:05 → 10:30 Session 5: Microphonics Sources, Experience and Control II

Convener: Serena Barbanotti

08:05 Open Q & A

08:35 Microphonics Control Studies for High QL SRF Cavities and Module Commissioning of the bERLinPro SRF Gun

Speaker: Dr Axel Neumann (Helmholtz Zentrum Berlin)

MRCW18_Neumann_102618.pdf

MRCW18_Neumann_102618.pptx

09:00 Experience with Microphonics in the CBETA Main Linac Cryomodule

Speaker: Nilanjan Banerjee (Cornell University)

CBETAMainLinacExperience.pdf

CBETAMainLinacExperience.pptx

09:20 Current Status of Microphonics and LLRF Control at cERL

Speaker: Takako Miura (KEK)

MRCW18_cERL_miura.pdf

09:40 Beam Induced Microphonics in High Current Synchrotrons

Speaker: James Rose (BNL)

MicrophonicsWorkshopFinal2.pdf

09:55 Microphonics Considerations for BESSY-VSR

Speaker: Dr Pablo Echevarria (Helmholtz Zentrum Berlin)

echevarria.pdf

echevarria.pptx

10:10 Microphonics Experience in HIE-ISOLDE at CERN

Speaker: Akira Miyazaki (CERN)

LLRF2018_miyazaki.pdf

LLRF2018_miyazaki.pptx

10:25 Q & A

10:30 → 11:00 Coffee Break

11:00 → 12:40 Session 6: Tuners

Convener: Zachary Conway (Argonne National Laboratory)

11:00 FNAL Tuners: LCLS-II to PIP-II

Speaker: Yuriy Pischalnikov (Fermi National Accelerator Laboratory)

LCLS -PIP tuner talk at MicroWorkshop_2.pdf

11:25 Low Beta Tuner Design

Speaker: Michael Kelly (ANL)

Tuner_Kelly_102618_compressed.pdf

Tuner_Kelly_102618_compressed.pptx

11:50 JLAB Tuners: 1980 - 2018

Speaker: Naeem Huque (JLAB)

CEBAF Tuners 1980 - 2018.pdf

CEBAF Tuners 1980 - 2018.pptx

12:15 Digital Pneumatic Tuner Control for FRIB Half Wave Resonators

Speaker: Harsh Maniar (FRIB-MSU)

Harsh_Digital Pneumatic Tuner Control.pdf

Harsh_Digital Pneumatic Tuner Control.pptx

12:35 Q & A

12:40 → 14:10 Lunch - On Your Own

14:10 → 15:40 Session 7: Hot Topic Discussion & Pulsed Machines

Convener: Yuriy Pischalnikov (Fermi National Accelerator Laboratory)

14:10 Piezo Control at DESY from FLASH to XFEL

Speaker: Mariusz Grecki (DESY)

flash&xfel_mg.pdf

14:35 PIP-II Pulsed Resonance Control

Speaker: Warren Schappert (Fermi National Accelerator Laboratory)

PIP-II Resonance Control - Microphonics Workshop.pptx

14:55 Initial ESS Prototype High Beta Cavity Piezo Based Characterization and First LFD Compensation Experiences

Speaker: Wojciech Cichalewski (Lodz University of Technology - Department of Microelectronics and Computer Science)

High_Beta_presentation.pdf

15:10 RF Commissioning of the First Three Beta = 0.041 Quarter Wave Resonator Cryomodule in FRIB Driver Linac

Speaker: Sanghoon Kim (FRIB/MSU)

Kim MRCW2018 RF Commissioning of the First Three Beta = 0.041 Quarter Wave Resonator Cryomodule in FRIB Driver Linac.pdf

15:25 Performance Test of Prototype Cryomodules for RAON

Speaker: Youngkwon Kim (RISP, IBS)

LLRF_2018_ykkim_v2.pdf

15:40 → 16:10 Coffee Break

16:10 → 17:15 Session 8: Stumbling Across the Finish Line

Conveners: Curt Hovater (Jefferson Lab), Larry Doolittle (LBNL)

16:10 Control System Design for SRF Cavity Based on Kalman Filter

Speaker: Andriy Ushakov (Helmholtz Zentrum Berlin)

MRCW18_Ushakov.pdf

16:30 Open Q & A

BoosterCavityCrossTalk_MRCW2018.pptx

16:55 Summary Presentation

Close Out_CH_A.pptx