Америка
<<  New York – AmericaS big apple A New York man retired  >>
New ALICE Beam Pipe: Injection Protection
New ALICE Beam Pipe: Injection Protection
Outlines
Outlines
Reminder
Reminder
To protect the LHC aperture at injection (bottleneck in the arc) and
To protect the LHC aperture at injection (bottleneck in the arc) and
Alice aperture: results - I
Alice aperture: results - I
Reminder
Reminder
Assumptions
Assumptions
Aperture and Beam Envelope PreLS2
Aperture and Beam Envelope PreLS2
Aperture and Beam Envelope PostLS2
Aperture and Beam Envelope PostLS2
Phase Advance Min
Phase Advance Min
Grazing Event
Grazing Event
Conclusions
Conclusions

Презентация: «New ALICE Beam Pipe: Injection Protection». Автор: Chiara Bracco. Файл: «New ALICE Beam Pipe: Injection Protection.pptx». Размер zip-архива: 814 КБ.

New ALICE Beam Pipe: Injection Protection

содержание презентации «New ALICE Beam Pipe: Injection Protection.pptx»
СлайдТекст
1 New ALICE Beam Pipe: Injection Protection

New ALICE Beam Pipe: Injection Protection

C. Bracco on Behalf of ABT/BTP Acknowledgment: M. Giovannozzi

2 Outlines

Outlines

Reminder Assumptions Aperture and beam envelope: Nominal injection Grazing event (MKI failure) Conclusions

3 Reminder

Reminder

4 To protect the LHC aperture at injection (bottleneck in the arc) and

To protect the LHC aperture at injection (bottleneck in the arc) and

respect the collimation hierarchy: LHC injection protection collimators (TDI, TCLIA and TCLIB) ar at 6.8 s TCDI (in the TL) are at 4.5 – 5 s

Reminder

5 Alice aperture: results - I

Alice aperture: results - I

Ok!...check MKI grazing failure..

M. Giovannozzi

b*=10 m qext=170 mrad Sep=2 mm

Minimum aperture = 13 s (bottleneck in the arc)

4 s bottleneck in the experiment

18/07/2014

MG - TREX meeting

5

6 Reminder

Reminder

90% MKI strength

10% MKI strength

7 Assumptions

Assumptions

Only MKI failures are considered :Only vertical plane Normalised emittance of 3.5 mm mrad also for postLS2 case Optics for protons (minimum n1):b* = 10 m, crossing angle = 170 mrad , separation =2 mm Beam envelope: 6.8 sb (what can go through TCDIs and TDI) Aperture: Mech.aperture* – Mech.tol.* – Orbit** – Disp.offset * Data from ALICE and Massimo ** 3 mm *sqrt(b/max(b)) ** Dy*3e-4

8 Aperture and Beam Envelope PreLS2

Aperture and Beam Envelope PreLS2

Nominal kick

TDI

TDI

9 Aperture and Beam Envelope PostLS2

Aperture and Beam Envelope PostLS2

Nominal kick

TDI

TDI

10 Phase Advance Min

Phase Advance Min

Aperture- MKI

11 Grazing Event

Grazing Event

grazing (10% MKI kick)

TDI

Nominal MKI kick

TDI

12 Conclusions

Conclusions

The new proposed aperture fulfills the n1 requirements of collimation hierarchy: bottleneck kept in the arc and > 7.5 s No direct beam impact on the new aperture is expected also in case of the most critical MKI failure (grazing event) Recommendation: calculate energy deposition induced by secondary showers in case of grazing event.

«New ALICE Beam Pipe: Injection Protection»
http://900igr.net/prezentacija/anglijskij-jazyk/new-alice-beam-pipe-injection-protection-230096.html
cсылка на страницу

Америка

13 презентаций об Америке
Урок

Английский язык

29 тем
Слайды