# Presentation: 801319

##  Beam Monitoring

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-  Beam Monitoring

- Hadmon will see remnant protons

- Muon Monitors see whatever escapes beam dump (muons?)

*p*

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- Debbie Harris Sacha Kopp, Commissioning Workshop

## Commissioning Beamline Monitors

- Hadron Monitor
- Alignment of support structures (done during absorber assembly)
- Practice of  removal of base through slot (also during absorber assembly)
- Leak check of device prior to final insertion
- Confirmation of adequate helium venting
- HV check of chambers
- Checkout of Electronics (internal calibration feature), ACnet data logging
- Time in signal gates (Pedestal and in spill) with respect to beam spill time
- Muon Monitors
- Alignment of support structures
- Aligment of detectors after mounting
- Leak check of detectors after mounting
- Confirmation of adequate helium venting
- HV check of chambers
- Checkout of Electronics, ACnet data logging
- Calibration Plateau Curves with no beam
- Time in signal gates (Pedestal, in spill, and calibration gates) with respect to beam spill time

- Debbie Harris Sacha Kopp, Commissioning Workshop

## Commissioning at Low Intensity(1011 – 1012 ppp)

- Perform Intensity scans with target in
- Calibrate rates versus toroid measurement
- LE,ME,HE positions required
- Perform High Voltage Scan

- Intensity scan at low
- Intensity Checks
- Linearity Of devices
- And determines
-  Monitor response
- Vs target position

- Debbie Harris Sacha Kopp, Commissioning Workshop

## Measurements with no target
Sweep proton beam across hadron monitor with no target 
Confirm bpm/sem position and angles
Coordinate with cross-hair study
Find any possible cracks in hadron absorber?

Background rates in 
    muon alcoves and 
   hadron monitor from 
   neutrons

Intensity scan useful here too

- Sweep proton beam across hadron monitor with no target
- Confirm bpm/sem position and angles
- Coordinate with cross-hair study
- Find any possible cracks in hadron absorber?
- Background rates in
-     muon alcoves and
-    hadron monitor from
-    neutrons
- Intensity scan useful here too

- Commissioning at Low Intensity(1011 – 1012 ppp)

- Debbie Harris Sacha Kopp, Commissioning Workshop

## Scan target with proton beam
In coordination with target Budal monitor studies
Compare with predictions—these are probably very hard distributions to predict because of the large neutron production uncertainties
Will be useful as spill-by-spill test of target integrity

- In coordination with target Budal monitor studies
- Compare with predictions—these are probably very hard distributions to predict because of the large neutron production uncertainties
- Will be useful as spill-by-spill test of target integrity

- Commissioning at Low Intensity(1011 – 1012 ppp)

- Debbie Harris Sacha Kopp, Commissioning Workshop

## Intensity scan with target in, perform HV scan
LE position
ME position
HE position
Move horn 1 by 3mm
LE,ME,HE position
Could also be done at lower
    intensity
Turn off horn, leave target in
Measure neutron background rates in muon alcoves

- LE position
- ME position
- HE position
- Move horn 1 by 3mm
- LE,ME,HE position
- Could also be done at lower
-     intensity
- Turn off horn, leave target in
- Measure neutron background rates in muon alcoves

- Commissioning at High Intensity(1013 ppp)

- Debbie Harris Sacha Kopp, Commissioning Workshop

## Summary

- Intensity Scans important
- Low to check monitor response
- High to check ability to spot problems during run
- Horn Current Scans important
- Low current to check neutron backgrounds
- High current for physics checks
- Want Low Medium & High Energy Target positions
- 	As target moves back, horn position changes are much more  pronounced
- Most monitoring commissioing requests will be
- Redundant with other requests (crosshair, Budal, etc)

- Debbie Harris Sacha Kopp, Commissioning Workshop