1. Beam instrumentation for the upcoming TIDVG#5
Specs/Simulation
Present situation (LSS1)
New instrumentation setup ‘on’ TIDVG#5
Todo (if BTV choice)
Budget estimate (if BTV choice)
Thanks for the inputs:
F.Velotti, M.Calviano, A.P.Marcone
S.Burger 2017_06_15

3. Simulations in LSS5
Beam dilution on the dump (simulations given by F.Velloti)
→ Diluted beam spot H ~ 50mm V ~ 25mm
Screen size (beam ‘envelop’) H ~ 150mm V ~ 80mm
→ Number of particles per dump up to 8E13p
Number of particles seen per year up 5.88E18p
Worst case: no H & V sweeping
Beam spot a few mm2 with 8E13p

4. Present TIDVG and associated instrumentation in LSS1
Instrumentation BSG (H+V)

5. TIDVG and proposed instrumentation in LSS5
Specs so far: ‘need to know where the beam is impinging on the dump’ 1
Replace BSGH & V by a screen ? +
New screen inside the dump shielding, in front of the graphite block 2 2 2 1 1

6. BTV description In our case: A fixed screen
Viewport which can not be put inside the shielding
Illumination system which can not be put inside the shielding

7. Design principle
Circulating beam
Dumped beam
~2m

8. System rad hard needed:
Design
System rad hard needed:
Camera
Vidicon tube based (or future replacement)
or Optical line (in contact with H.Vincke for environment study) with more ‘standard’ camera
Screen
Fixed
Good light emission efficiency (to compensate for low sensitivity of rad hard detector and optical line)
→ Scintillation material (exclude OTR)
Robust to survive 5.88E18 x X years (?)
→ Chromox type screen (check numbers)
mirror
Check how it would degrade with beam going through over time…
→ Could it be installed below the screen (?)
Illumination system
Need a light for each screen for calibration purpose and optics check
→ integration issue:
- no access close to the screen
- test light through the mirror
- need replacement every year (as for AD target for example)
Backscattering effect seen as background noise if camera to close
→ delay the acquisition
→ move the camera

9. Todo
Need to check:
- RP values around the dump for camera and optical line option
- screen robustness for such application
- light and optics through mirror(s) ~3m away from the viewport
 OK with a camera lens with 100mm < Focal Lens > 150mm
Budget (only estimate as we have to confirm many of the points)
New tank with fixed screen and mirror support(s)
Design 15-20KCHF
Fab KCHF
Screens 2x5 KCHF
Camera 8 KCHF
Optical line* 2x 5 to 20KCHF
Cabling to BA5 20KCHF
Electronics 10KCHF
83KCHF < TOTAL < 123KCHF
* If needed with fuse silicate material