CBETA wiki

Primary Project Goal

The primary project goal is to provide 4 pass acceleration of 1 mA beam to 150 MeV, then decelerate in 4 passes and dump.

The energies are defined as follows:

• from gun: 6 MeV
• 1st pass through MLC: 42 MeV (+36 MeV)
• 2nd pass: 78 MeV (+36 MeV)
• 3rd pass:114 MeV (+36 MeV)
• 4th pass: 150 MeV (+36 MeV)
• 5th pass: 114 MeV (-36 MeV)
• 6th pass: 78 MeV (-36 MeV)
• 7th pass: 42 MeV (-36 MeV)
• 8th pass to dump: 6 MeV (-36 MeV)

Final Project Report

• Final Project Report (pdf), rev B, version 3F

CBETA Systems

• 1.01 Project Management (PM website • CBETA box)
• 1.02 Accelerator Physics (Lattice files)
• 1.03 DC Gun and Injector
• 1.04 RF Systems
• 1.05 FFAG Magnets and Girders
• 1.06 Splitters
• 1.07 Power Supplies
• 1.08 Controls (Naming convention • Magnet polarity)
• 1.09 Instrumentation
• 1.10 Vacuum System and Beam Stop
• 1.11 System Integration
• 1.12 Beam Commissioning (How-to guides • Layouts)
• 1.13 Safety

Supporting System Documentation

• Supporting Documents

Project Phases

• CBETA_MLC_move.mp4: MLC move to final location within Wilson Lab on Feb. 8, 2017

Fractional Arc Test ✅

• Fractional Arc Test wiki page

Pre-Beam System Tests

• Pre-beam System Tests wiki page
• Equipment Protection System

Four Turn Commissioning

• RLA_mode.docx

• ACCELERATION_WITH_ENERGY_RECOVERY.docx

• Commissioning results from the Operating Conditions
  • OPERATINGSETTINGS.pdf
  • First-4order.pdf
• SPLITTER LINES
  • S1_splitter_Line.png
  • S2_Splitter_Line.png
  • S3_splitter_Line.png
  • S4_splitter_Line.png
  • R1_Splitter_Line.png
  • R2_Splitter_Line.png
  • R3_Splitter_Line.png
  • R4_Splitter_Line.png
• Matching from RX to the Linac

1. tao.init (37.70 KB)
2. Commands2.tao (617.00 B)
3. VaryQuads.tao
4. cbeta_4p_Dec05_2019_will.lat (352.05 KB)
   • Instructions:
     • get the present values of the quad's gradients 'caget MER2QUA01 _field' by going to the epics control system: ssh -X erpopr@erp201
     • 1. run tao
     • call VaryQuads.tao
     • call Commands2.tao
     • run (runs 100 steps
     • In the case that you want to change the number of quads to vary you have to edit the Commend2.tao where you can ask:
       • use var q.r2[4:8] (this line can pick the quads you want: for example use var q.r2[6:8] will var RXQUA03, RXQUA02, and RXQUA01 at the end of the RX line.
         use dat twiss.la_will[7:12] This line says that from 7--> 12 in the twiss.la_will the contraints for aplha_x, aplha_y, beta_x, beta_y, dipersion at the end of the MR1DIP01 /3 (4, 5) and the dipersion prime to be all zero

KPP Commissioning

Future EIC studies with CBETA

Future non-EIC studies with CBETA

• Compton backscattered photon source

CBETA Reports

• Technical Notes
• Design Report (June 2017)
• Publications
• Monthly/Quarterly technical reports
• Financial Reports 🔒
• NYSERDA contract report

CBETA Web Utilities

• WebTopicList - all topics in alphabetical order
• WebChanges - recent topic changes in this web
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