SciFi Tracker Testbeam November 2016

Instructions for Shifters

• Arrive promptly!
• Discuss previous data taking with current shift crew.
• Determine the plan for the next shift.
• Helpful links:
  • How To Testbeam Nov '16
  • Copy of DAQ Logbook
  • SPS Beam Monitor
  • Beam control and other general LHCb testbeam information

Be aware that the ordering of the channels currently does not correspond directly to physical coordinates, due to the routing on the new adapter cards of the Spiroc front-end.

Shift List

TBA

Practical Information

North Area

All practical information for users of the North Area can be found in the North Area Handbook.

The layout of the H8A area can be seen in the EHN1 experimental hall drawings.

The area is approximately 6 metres wide and the height to the beam line is 50 inches (127 cm).

• H8A: Facing in direction of beam
  

• H8A: Facing towards the beam
  

• H8A: Electronics / power distribution.
  

Access to the area

The test beam will take place in the North Area (building 887) in Prévessin. The whole building (including the control rooms) is classified as a supervised area so we need to wear dosimeters. You also need the dosimeter to access the building. Safety shoes and a helmet are also required to work in the area. To obtain a personal dosimeter, you need to do the following:

1. Make sure you have a valid medical certificate: link.
2. Follow the radiological protection course for "Supervised Radiation Areas": link.
3. Follow the instructions on the "Dosimetry Service Website".

It is also possible to apply for a temporary dosimeter which is valid for two weeks. However, this can only be done once per year.

To get the rights to be able to open the control room, request the access via the EDH system. When making the access requests, select Prevessin in the "Access Site" field, 887 as "Access Building", and 0887-1-Q43 (or 0887-1-Q40) as "Access Zone".

Aim of the Testbeam

• Single hit efficiency vs. light yield
• Irradiation studies
• Angular scans (for comparison with simulation)

Measurement Plan

Vertical Scans

	0.45 (0 mm), π, 2014 SiPMs	3.32 (300 mm), π, 2014 SiPMs	0.45 (0 mm), μ, 2014 SiPMs	0.45 (0 mm), μ, 2015 SiPMs
3.30	100k	100k	100k	---
3.20	100k	100k	100k	---
3.10	100k	100k	100k	---
3.00	100k	100k	100k	200k
2.90	100k	100k	100k	---
2.80	100k	100k	110k	---
2.70	100k	100k	88k	200k
2.60	100k	100k	100k	---
2.50	100k	100k	100k	---
2.40	100k	100k	100k	200k
2.30	100k	100k	100k	---
2.20	100k	50k	100k	---
2.10	100k	50k	100k	200k
2.00	100k	50k	100k	---
1.90	100k	50k	110k	---
1.80	100k	100k	100k	125k
1.70	100k	37k	100k	---

Angular Scans:

	3°	6°	10°	15°	20°	25°
3.00	---	---	500k	---	---	---
2.95	---	---	---	275k	500k	---
2.60	---	---	200k	150k	---	---
2.55	---	---	150k	200k	200k	---
2.50	---	---	150k	180k	150k	150k
2.45	---	---	150k	150k	180k	150k
2.40	1M (+500k)*	80k	150k	200k	150k	150k
2.35	---	---	---	---	150k	100k

* readout crashed during measurement

Fibre Mats/Modules

• 5-layer module irradiated in the LHC tunnel, 2014 fibres (2.5m)
• Irradiated 6-layer module from Nov '15 testbeam, 2015 fibres (2.424m)
• DUT: Irradiated 6-layer module, 2016 fibres (2.424m)

Read-out

• 2014 read out with 2014 Hamamatsu SiPM arrays
• 2015 read out with 2015 Hamamatsu SiPM arrays
• 2016 module read out with both 2014 and 2015 Hamamatsu SiPM arrays

Module	SiPM	Uplink (upper)	Uplink (lower)
2015	2015	1	2
2016 (DUT)	2014 / 2015	3	4
2014	2014	5	6

Setup

• DUT (2016) sandwiched between 2015 (beam side) and 2014 module
• Each module 45 mm wide, no space between modules
• DUT placed above rotation axis, lower edge of module ~10cm above point of rotation
• 2015 module: irradiated side up
• 2016 module: irradiated side down

Slides from Roman: https://indico.cern.ch/event/589572/attachments/1374262/2085955/tb2016_1_Greim.pdf

Position Definition

• Modules mounted on two axes linear table
• Vertical adjustment:
  • max. distance: 340mm
  • topmost position: 0.45
  • bottommost position: 4.55
  • position 3.30 --> beam hits upper edge of modules
  • 'up' on remote "moves" beam downwards on modules
• Horizontal adjustment:
  • max. distance: 380mm
  • leftmost position: 0.45 ("Jura side")
  • rightmost position: 4.08
  • position 0.45 --> beam hits mirrored end of modules
  • 'left' on remote "moves" beam towards mirror, 'right' towards SiPMs

Data Backup

A backup of the data can be found on the EOS. Be aware that the ordering of the channels does not correspond directly to physical coordinates, due to the routing on the newer adapter cards of the Spiroc front-end.

/eos/lhcb/testbeam/scifi/Nov2016

If you wish to participate in the analysis, contact Blake Leverington or Roman Greim.

Beam Setting for November 2016

Under construction

-- SimonNieswand - 2016-11-03

• HowTo_2016.txt: HowTo _2016.txt</verbatim>