# Presentation: 378972

## ILC Accelerator R&D at Fermilab

- Shekhar Mishra
- Fermilab
- 11/14/05

## R&D Goals

- Fermilab ILC R&D is focused on addressing the key ILC design and technical issues, cost reduction and US industrial involvement in ILC. These goals are aimed towards the development of the ILC Technical Design Report.
- The R&D goals are designed to establish the viability of all Main Linac technical components addressing TRC Ranked R&D goals, costs, engineering designs to enable “early” decision (by 2010) and to position the US (and Fermilab) to host the ILC.
- The main thrust of the Fermilab ILC Accelerator R&D is to establish US technical capabilities in the Superconducting Radio Frequency Cavity and Cryomodule technology. The main goals are
- 1) Cavity technology development in the US to routinely achieve _>_ 35 MV/m and Q ~0.5-1e10,
- 2) ILC Cryomodule design, fabrication (cost reduction)
- 3) Fully tested basic building blocks of the Main Linac (Evaluate the reliabilities issues).
- 4) Accelerator design issues in the Main Linac, Damping Ring and Machine Detector Interface
- 5) LLRF, Instrumentation and Controls development
- 6) Development of an ILC site near Fermilab for Bid to Host.
- Fermilab ILC Accelerator R&D is focused on the development of the Main Linac.

- BNL-FNAL Meeting

## Slide 3

- BNL-FNAL Meeting

## ILC Accelerator Physics

- ILC Main Linac Lattice and Low Emittance Transport Studies.
- Full linac simulation including feedback, beam-beam interaction at IR.
- Alignment and Vibration
- Systematic Data collection and analysis
- Measurement of vibration from surface to ILC Depth near Fermilab site.
- Damping Ring (Dog Bone (17 kms) and Fermilab-Cornell-Argonne Damping Ring (FCAD) (6 kms Ring))
- Lattice Design, Instabilities, Cost etc.
- Machine Detector Interface and Energy Deposition Studies
- Energy Deposition and collimation for BDS and IR
- Background in detector and its mitigation
- Treatment of the spent beam downstream of IR.

- Collaboration on Accelerator Physics

- BNL-FNAL Meeting

## US-ILC Site Development

- Fermilab in collaboration with SLAC, KEK, DESY and CREN is leading the development of a site analysis matrix to evaluate and compare different sites
- The sites will be compare on 9 criteria
- At present we are looking at 5 potential site near Fermilab.
- There are several issues form accelerator design that needs to feed into these studies
- 1 tunnel vs 2 tunnels
- Deep or shallow layout
- Laser straight linac, follow the earth curvature, laser straight in segments

- BNL-FNAL Meeting

## ILC 1.3 GHz Cavities @ FNAL

- Delivery date September 09, 2005, fabrication time 6 month

-  Industry to fabricate cavities.
-  Cavities will undergo BCP and vertical testing at Cornell (25 MV/m)
-  EP and vertical testing at Jlab. ( 35 MV/m)
-  BCP facility being developed at ANL/Fermilab (in late 06)
-  High Power Horizontal test will be performed at Fermilab.
-  Single/large Crystal cavity development.

## ILC Cavity Processing 

- Infrastructure at Cornell and Jlab are being upgraded to process the 1.3 GHz ILC cavities.
- Fermilab is working on installation and commissioning of a BCP facility at ANL (March FY06)

-  An Electro-polishing facility is being designed by the ILC Collaboration to be build at ANL/Fermilab Cavity Processing Facility at ANL.

- BNL-FNAL Meeting

## ILCTA Infrastructure at FNAL

- BNL-FNAL Meeting

## Cryomodule Design and Fabrication

- In FY05 Fermilab started on converting the DESY/INFN design of the ILC cryomodule (Type-III+) for US vendor and cost reduction.
- The cryomodule is the significant cost in the Main Linac.  Industrial fabrication and cost reduction are important issues that we need to start now.
- The Goal is to design an improved ILC cryomodule (Type-IV).

- Collaboration on Quadrupole design and fabrication

- BNL-FNAL Meeting

## ILCTA@Fermilab - Cryomodule Assembly Facility

-  Cavity will be dressed in CAF for horizontal test at Fermilab at ILCTA-MDB.
-  Horizontally tested cavities will be assembled into a string at CAF.
-  Cryomodule fabrication takes place at CAF.

- Class 10 and 100 clean rooms have been ordered

-  This facility is designed based on improved design from DESY.
-  We can start fabrication of Cryomodule by May 06.

- BNL-FNAL Meeting

##  ILCTA@Fermilab

**New Muon Lab**

**FNPL Photo-injector**

- Building a dedicated ILC cryomodule test in the New Muon Lab (ALCTF)
- Cleaning out building (Done) except for CCM
- Plan is to install interim cryogenic solution in FY06
- Move FNPL Photo-injector to provide electron beam (Late FY06)

- BNL-FNAL Meeting

## ILCTA@Fermilab Plan

**Deliverable: Fully tested basic building blocks of the Main ILC Linac.**

- BNL-FNAL Meeting

## Collaboration on ILC IR

- BNL and FNAL Collaborates on LARP

- BNL-FNAL Meeting

## Summary

- Fermilab ILC R&D
- Main Linac Design
- Cavity Processing and Testing
- Cryomodule Design and Construction
- Development of test infrastructure with beam, including RF power, LLRF, instrumentation and controls.
- Possible area of collaboration on ILC
- Accelerator Physics: Machine Detector Interface
- Superconducting Quadrupole for Main Linac
- Superconducting magnets for IR
- Instrumentation and controls
- Polarized e- Source for ILC

- BNL-FNAL Meeting