AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at...

16
AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN) et al 29 January 2015 The research leading to these results has received funding from the European Commission under the FP7 Research Infrastructures project AIDA, grant agreement no. 262025. This work is part of AIDA Work Package 8: Improvement and equipment of irradiation and test beam lines. The electronic version of this AIDA Publication is available via the AIDA web site <http://cern.ch/aida> or on the CERN Document Server at the following URL: <http://cds.cern.ch/search?p=AIDA-D8.10> AIDA-D8.10

Transcript of AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at...

Page 1: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

AIDA-D8.10

AIDAAdvanced European Infrastructures for Detectors at Accelerators

Deliverable Report

Commissioning of new facilityequipment

B.Gkotse, B. (CERN) et al

29 January 2015

The research leading to these results has received funding from the European Commissionunder the FP7 Research Infrastructures project AIDA, grant agreement no. 262025.

This work is part of AIDA Work Package 8: Improvement and equipment of irradiationand test beam lines.

The electronic version of this AIDA Publication is available via the AIDA web site<http://cern.ch/aida> or on the CERN Document Server at the following URL:

<http://cds.cern.ch/search?p=AIDA-D8.10>

AIDA-D8.10

Page 2: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

Copyright © AIDA Consortium, 2015

Grant Agreement 262025 PUBLIC 1 / 15

Grant Agreement No: 262025

AIDA Advanced European Infrastructures for Detectors at Accelerators

Seventh Framework Programme, Capaci t ies Spec i f ic Programme, Research In f rast ructu res,

Combinat ion of Col laborat ive Pro ject and Coord inat ion and Support Act ion

DELIVERABLE REPORT

Commissioning of new facility equipment

DELIVERABLE: D8.10

Document identifier: AIDA-Del-D8.10

Due date of milestone: End of Month 48 (January 2015)

Report release date: 29/01/2015

Work package: WP8: Improvement and equipment of irradiation and

beam lines

Lead beneficiary: CERN

Document status: Final

Abstract:

CERN has constructed a new irradiation facility in the PS (Proton Synchrotron) EAST AREA. The

facility contains a proton and a mixed irradiation field facility. The commissioning of the overall

facility started in October 2014. Part of the infrastructure of the proton irradiation facility IRRAD was

produced in the framework of the AIDA project. This document reports on the proton irradiation

facility and its first commissioning run in October to December 2014. Particular emphasis is given to

the user infrastructure including cold boxes and a new fluence monitoring systems that were provided

as AIDA deliverables in a collaborative effort between CERN and external partners. The facility itself

has already been described in detail in the AIDA deliverable report AIDA-D8.4 [1].

Page 3: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 2 / 15

Copyright notice:

Copyright © AIDA Consortium, 2015

For more information on AIDA, its partners and contributors please see www.cern.ch/AIDA

The Advanced European Infrastructures for Detectors at Accelerators (AIDA) is a project co-funded by the

European Commission under FP7 Research Infrastructures, grant agreement no 262025. AIDA began in

February 2011 and will run for 4 years.

The information herein only reflects the views of its authors and not those of the European Commission and no

warranty expressed or implied is made with regard to such information or its use.

Delivery Slip

Name Partner Date

Authored by

B.Gkotse, M.Glaser, P.Lima, E.Matli,

M. Moll, F.Ravotti

R.French

G.Beck

E.Gaubas, J.Vaitkus, T.Čeponis, A.Tekorius,

J.Pavlov, D.Meškauskaitė, A.Uleckas

CERN

USFD

QMUL

VU

05/01/2015

Edited by M.Moll CERN 15/01/2015

Reviewed by

M.Moll [WP coordinator]

G.Mazzitelli [WP coordinator]

L.Serin [Scientific coordinator]

CERN

INFN

CNRS

21/01/2015

Approved by Steering Committee 29/01/2015

Page 4: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 3 / 15

TABLE OF CONTENTS

1. INTRODUCTION ........................................................................................................................................ 3

2. LAYOUT OF THE IRRAD PROTON FACILITY ................................................................................... 5

3. FACILITY INFRASTRUCTURE .............................................................................................................. 6

3.1. IRRADIATION TABLES .............................................................................................................................. 6 3.2. COLD BOXES ........................................................................................................................................... 6 3.3. IRRADIATION SHUTTLE ............................................................................................................................ 8 3.4. MONITORING THE BEAM CONDITIONS .................................................................................................... 10 3.5. OFFLINE FLUENCE MONITORING ........................................................................................................... 10

4. COMMISSIONING OF THE FACILITY ............................................................................................... 12

5. CONCLUSION ........................................................................................................................................... 15

1. INTRODUCTION

The proton irradiation facility in the PS East Area (known as IRRAD1), on the T7 beam line, was

heavily and successfully exploited for irradiation of particle detector elements, electronic components

and detector materials since 1992. The mixed-field irradiation facility (known as IRRAD2) was

instead implemented behind the DIRAC experiment on the T8 beam line and has been operated

parasitically to DIRAC since 1998 [2]. These facilities received particle bursts - protons with

momentum of 24GeV/c - delivered from the PS accelerator in “spills” of about 400ms (slow

extraction). In IRRAD1, the proton beam was spread out in order to produce a uniform irradiation spot

of several square centimetres, while in IRRAD2 the irradiation was performed in a small cavity with

secondary particles produced by the primary proton beam impinging on a thick target made of carbon,

iron and lead [3]. In the past 15 years, more than 8300 “pieces” were irradiated using this

infrastructure.

Based on previous studies carried out during the years 2007-2010 [4], the need of improved irradiation

facilities at CERN, was confirmed and consolidated. More specifically, in view of the high-luminosity

upgrade of the LHC and its experiments, the old PS East Area (EA) facilities suffered from a number

of restrictions:

1. the available space was very limited and allowed only the irradiation of relatively small and

stand-alone objects;

2. the proton flux was limited on the one hand by the weakness of the shielding and, on the other

hand, by the competition for proton spills with DIRAC;

3. the access to the IRRAD1 proton facility required long cool-down time and a stop of the

operation in the whole EA for the full duration of the access.

In the framework of the AIDA project, an upgrade of the all EA irradiation facilities on the T8 beam-

line was proposed based on the assumption that DIRAC would have concluded its experimental

program in 2012. The DIRAC experimental apparatus was then decommissioned during 2013 and in

the following the new EA-IRRAD facility was constructed and is today being commissioned at its

place in the framework of the overall renovation project of the PS East Area [5]. The EA-IRRAD

project involves several CERN groups belonging mainly to the Engineering and Physics department.

Page 5: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 4 / 15

Figure 1: Layout of the PS East Area until 2012 (left). New combined EA-IRRAD facility implemented on the

T8 beam-line (right): the proton area, IRRAD (upstream), is followed by the mixed-field area CHARM

(downstream).

As shown in Figure 1 (right), the new proton irradiation facility (named IRRAD) has been constructed

at the location previously occupied by the DIRAC target [1,6]. A photo of the facilities is given in

Figure 2. While the mixed-field facility (named CHARM [7]) is constructed downstream of IRRAD, in

the location where the former DIRAC detector was installed (left of Figure 1). This solution has

several advantages:

1. the access to the facility is independent of other experiments located in the PS EA;

2. the layout is optimised for exploitation as an irradiation facility, with appropriate shielding,

ventilation, dedicated infrastructure and sufficient space for a proper installation and easy

accessibility of the equipment;

3. the same protons are used for both IRRAD and CHARM, thus leading to a strongly improved

PS cycle economy and optimal use of available protons.

In the new IRRAD facility, a particle fluence of about 1×1016 p/cm2 could be reached in 5 days over a

surface of 12×12mm2 (FWHM). This roughly corresponds to a factor 4-increased intensity with

respect to the previous IRRAD1 facility. In the following of this paper, the key characteristics of the

new IRRAD facility as well as the first commissioning of the facility and its infrastructure will be

described in more detail.

Figure 2: Photo of the irradiation facilities in the CERN EAST AREA. The position of the facilities behind the

shielding and the direction of the proton beam in the T8 beam line is indicated.

Page 6: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 5 / 15

2. LAYOUT OF THE IRRAD PROTON FACILITY

The IRRAD bunker is subdivided in three zones according to the nature of the samples to be

irradiated. With reference to Figure 3 (from upstream to downstream), the first zone is dedicated to the

irradiation of “light” materials such as small silicon detectors, the second zone to the irradiation of

intermediate materials such as electronic cards and components, while the third zone is optimized to

perform irradiation experiments on “high-Z” materials such as samples of calorimeter crystals. In this

last zone, it will be also possible to perform irradiations in cryogenic conditions using a dedicated

setup operating with liquid Helium. Moreover, a fourth zone, in a partially shielded area, is equipped

for the installation of readout electronics and/or DAQ systems that need to be close to the Devices

Under Test (DUT) during irradiation.

Figure 3: Detailed layout of the IRRAD proton facility.

In between each irradiation zone, an 80cm-thick concrete separation wall is installed in order to reduce

the background during operation and to minimize the ambient dose equivalent to the personnel

accessing the area. As visible in Figure 3, in order to reduce further the secondary radiation produced

by the interaction of the proton beam with the air, sections of vacuum beam-pipe are installed in the

empty space between the various irradiation systems. A more detailed description of the overall

facility is given in reference [1]. In the following we concentrate on the equipment of the facility that

was produced in the framework of the AIDA project and its commissioning in the period of October to

December 2014.

The DUTs are installed and positioned in the proton beam by using two different types of remote

controlled holders: the irradiation tables (see section 3.1) partly equipped with cold boxes (see section

3.2) and the irradiation shuttle (see section 3.3). A set of beam instruments has been installed inside

the IRRAD bunker to allow a constant monitoring of the irradiation conditions (see section 3.4).

Finally, a new offline fluence monitoring system has been developed and commissioned (see section

3.5). In section 4 a brief report about the first commissioning run of the facility and its infrastructure is

given.

Page 7: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 6 / 15

3. FACILITY INFRASTRUCTURE

3.1. IRRADIATION TABLES

The tables are remote-controlled stages providing the possibility to position the DUT with ±0.1mm

precision in the transversal plane (X-Y) with respect to the beam axis. The tables also rotate over the

azimuthal angle () in order to achieve a precise alignment with the beam within ±0.025º. The

prototype of an irradiation table is shown in Figure 4. The installation of the samples on the table

requires the access to the proton area.

Three independent groups of tables will be installed in the three zones of the IRRAD facility bunker. A

maximum of three tables per group (e.g. 9 in the whole facility) can be installed and operated. This

allows the irradiation of several materials at the same time with a “clean” proton beam and minimum

background induced by scattered secondary particles.

On each table, the maximum volume available for irradiation is of 200×200×500mm3 while the

maximum samples weight is 50kg. The tables can automatically move (e.g. “scan”) the samples during

irradiation in order to provide a uniform spot over the 200×200mm2 surface (or a smaller portion of it,

depending on user request). On these tables, the test of equipment “in operation” (e.g. powered and

connected to a DAQ system) is possible as well as irradiation of detector components at low

temperature, down to about -20ºC, using specially designed irradiation boxes with temperature control

(see Figure 4 and section 3.2). A more detailed description of the tables can be found in the milestone

report MS31 [8].

Figure 4: Prototype of a table for proton irradiation equipped with a prototype thermalized irradiation box

for device cooling during irradiation.

3.2. COLD BOXES

In order to provide realistic operational conditions during the irradiation experiments, some samples

have to be kept at low temperatures. Silicon based detectors in the LHC experiments are for example

kept cold in order to avoid annealing effects, reduce the leakage current and avoid thermal runaway of

sensors and electronics. A typical anticipated temperature is -20°C. In the irradiation facilities part of

the experiments will thus have to be performed in cold boxes assuring a stable and low temperature

during irradiation. Figure 4 shows a prototype cold box mounted on a 2-axis movable table. The

University of Sheffield has designed (see Figure 5 ) and produced (see Figure 6) a series of cold boxes

for such experiments.

Page 8: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 7 / 15

Figure 5: Technical drawing of the cold box.

Figure 6: Cold boxes delivered to CERN.

The boxes have been operated successfully at the irradiation facility in Birmingham [9-11] (see Figure

7). The first test of the prototypes under load while cooled to -25°C demonstrated a weakness in the

circulation of the coolant. Therefore, a new radiator was designed and manufactured in Sheffield with

larger bore cores and larger cooling fins to improve thermal conductivity (see Figure 8). Testing was

then completed using the Birmingham Irradiation Facility, and showed a 50% reduction in cool down

time of the thermal box and a reduced load on the chiller pump (8.4 bar compared to 2.2 bar).

Cold boxes with this new radiator type have been delivered to CERN in the end of 2014 and are fully

operational. Due to lack of beam time, they could not yet be tested in situ and will be commissioned

with beam in the first irradiation run in 2015. No complications are expected as they have been

commissioned with beam in the Birmingham facility already.

Page 9: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 8 / 15

Figure 7: Cold box in situ radiation testing at the

Birmingham Irradiation Facility.

Figure 8: The new cold box radiator – A larger core

allows for increased coolant flow at low pressure.

The authors are grateful to the following persons for their contributions to the work on the cold boxes:

Hector Marin-Reyes, Paul Hodgeson, Kerry Parker, Simon Dixon, Paul Kemp-Russell, Jonathan

Mercer (University of Sheffield)

Adrian Bevan, Jag Mistry, Fred Gannaway, John Morris (Queen Mary University of London)

3.3. IRRADIATION SHUTTLE

The shuttle is a remote-controlled trolley travelling on a rail system and allowing the positioning of

“small” objects in the beam (typically silicon detector test-samples) without the need of human access

into the area. This system guarantees a precise X-Y alignment of ±0.1mm with respect to the beam

axis and it is mainly designed for the irradiation of passive samples at RT. The shuttle for the new

proton irradiation facility is cloned from the previous IRRAD1 and IRRAD2 shuttle systems and

shown in Figure 9. The shuttle (see Figure 10) travels across the shielding blocks for a length of about

10m inside a conduit of 400×400mm2. To minimize the direct radiation streaming, the path of the

conduit follows a chicane located in between the first and the second group of irradiation tables (see

Figure 3). On the shuttle, the maximum volume available for irradiation is of about 50×50×200mm3

for a maximum weight of about 1Kg. The standard size of the beam spot on the shuttle system () is of

about 5-7mm RMS but it can vary according to the different beam focusing options. In particular,

focusing on the shuttle system, the spot size can be reduced further down during high-intensity

irradiation periods. Two radiation monitors (Automess 6150AD6) are installed on the shuttle and are

used to measure remotely the radiation levels of the irradiated samples while being removed from the

irradiation area.

Page 10: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 9 / 15

Figure 9: Loading station of the IRRAD shuttle system with its

motorization (picture taken during installation).

Figure 10: Sample holder (shuttle) mounted

on the rail inside the shuttle conduit.

The shuttle system shown in Figure 9 has been installed in the irradiation facility and is now deeply

embedded in the facility shielding leaving only access to the irradiation and loading position of the

shuttle. The end of the shuttle conduit inside the new irradiation facility is visible in Figure 11. It is

labelled “SHUTTLE IRRAD-1”. The shuttle itself arrives to the beam position behind the Kapton

window covering the opening in the conduit.

Figure 11: View inside Zone 1 of the new irradiation facility. In front a piece of the beam pipe is visible

guiding the beam into the irradiation area. In the middle a table system is located with the possibility to

mount 3 remote controlled irradiation tables. Only one position labelled IRRAD-7 is occupied with a table.

Against the wall in the back the end of the shuttle conduit can be seen labelled with IRRAD-1.

During the commissioning run in 2014 the shuttle system was not operated due to time constraints.

The shuttle will however be used in the first irradiation runs in 2015.

Page 11: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 10 / 15

3.4. MONITORING THE BEAM CONDITIONS

The intensity of the extracted proton spills is monitored using a Secondary Emission Chamber (SEC)

device provided by PS beam instrumentation. This device is installed in the upstream machine area,

and its signal is made available in the counting room together with the other signals provided by the

PS timing-distribution. The profile of the proton beam with a spill-by-spill resolution is obtained by a

custom-made Beam Profile Monitor (BPM). The operation of this instrument is based on the

secondary electrons emission effect. One BPM is located upstream the IRRAD area, in the same

location as used for the SEC. An example display of one proton spill as taken during the

commissioning of the facility in October 2014 in shown in Figure 12. Additional BPM devices will be

distributed among the 3 irradiation zones, along the trajectory of the proton beam, to guarantee the fine

tuning of the beam profile on all irradiation systems. The absolute calibration of this beam

instrumentation in terms of p/cm2 is obtained by means of activation measurements of thin aluminium

foils which will be in the future complemented by the AIDA fluence monitoring system described in

section 3.5.

Figure 12: Beam profile taken with the beam profile monitor during the commissioning run in October

2014. Every individual spill of protons is monitored and recorded with its beam shape and intensity.

3.5. OFFLINE FLUENCE MONITORING

The VUTEG-5-AIDA fluence monitoring system is based on the direct relation between carrier

recombination lifetime in Silicon (Si) and density of radiation induced extended defects. The carrier

recombination lifetime is strongly degrading with the irradiation fluence [12-14]. A measurement of

the carrier lifetime in Si can thus be used to determine the particle fluence, the Si has been exposed to.

The measurements are performed in a contactless manner on pure Si wafer fragments using a

microwave absorption technique. The surfaces of the Si wafers are passivated (e.g. with thermal oxide)

to extend the dynamic diapason of controlled lifetime values towards the range of small fluences.

A first version of the instrument that was designed and fabricated at the Vilnius University, and was

successfully tested at the old CERN IRRAD facility in November 2012. The carrier lifetime

dependence on irradiation fluence was calibrated for Silicon material sets of different growth

technology and conductivity type. Example measurements are given in Figure 13. The dependence of

the carrier trapping lifetime, attributed to point radiation defects, on annealing temperature and

exposure time was also revealed and examined as depicted in the figure.

Page 12: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 11 / 15

1012

1013

1014

1015

1016

100

101

102

103

Fluence (cm-2

)

R (

ns)

FZ-n

As-irradiated

Annealed:

80 oC 4 min.

80 oC 8 min.

80 oC 16 min.

80 oC 30 min.

1012

1013

1014

1015

1016

100

101

102

103

Fluence (cm-2

)

R (

ns)

Cz-p

As-irradiated

Annealed:

80 oC 4 min.

80 oC 8 min.

80 oC 16 min.

80 oC 30 min.

Figure 13: Calibration curves obtained in the IRRAD facility with FZ and CZ Silicon samples of different

conduction type (n-type and p-type). After irradiation and the first measurement (“as-irradiated”) the

annealing of the recombination lifetime at an elevated temperature of 80°C was studied.

During the last stage of the project implementation in the year 2014 the contactless dosimeter has been

developed into a more sophisticated multi-purpose instrument (VUTEG-5-AIDA). The software of the

measurement control and data processing has been upgraded. A computer controlled 1D stage has

been implemented for single line scans of lifetime distribution within irradiated Si wafer fragments.

This last version of the instrument enables a rapid evaluation of the contour of a particle beam and its

homogeneity by a computer controlled positioning which can be made with precision of 2 m.

Additionally, a lateral scan can be implemented by manual shift of the sample mounted within a

spring-supported sample holder with precision of about 500 m. The irradiation fluence is evaluated

according to previously taken calibration curves using the absolute values of carrier lifetime. The

comprehensive sample chamber has been tested for irradiation beam profiling. All the measurement

procedures, after mounting of the sample under test, are computer controlled. The re-arranged

contactless dosimeter VUTEG-5-AIDA is thereby supplied by two sample chambers: one of them has

been improved and devoted for rapid monitoring of Si samples of dimensions of about 1010 mm2

placed in plastic bags for dosimetry, and another for research of particle beam parameters and for

scientific characterization of the irradiated samples and e.g. their annealing properties. Pictures of the

VUTEG-5-AIDA dosimeter are illustrated in Figure 14 and Figure 15.

Figure 14: Front panel of the improved dosimeter

VUTEG- 5-AIDA with sample compartment

addressed to research purposes.

Figure 15: General view of the dosimeter with the two

types of sample chambers, - the compartment devoted

to dosimetry measurements is lying on the top of the

instrument.

The tests of lifetime values dependent on neutron irradiation fluence have complementarily been

performed using MCZ Si wafer fragments. The instrument has also been tested using Si wafer

fragment irradiated with protons at the IRRAD facility. The mapped profile of the carrier

recombination lifetime single-dimensional distribution is illustrated in Figure 16 below, where rather

sharp proton beam of diameter 5 mm contour is reproduced.

Page 13: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 12 / 15

Figure 16: Beam profile as obtained from the VUTEG-5-AIDA using a piece of polished MCZ silicon wafer

that was exposed to the proton beam in the IRRAD facility.

The VUTEG-5-AIDA instrument is presently installed in the laboratory of the irradiation facility (see

Figure 17), where it will remain until end of 2016 before returning to the University of Vilnius. The

machine is fully operational and ready to take data. An operation manual for the instruments was

written to also allow un-experienced users after a short introduction to perform measurements.

Figure 17: VUTEG-5-AIDA fluence monitor installed in the laboratory of the irradiation facility at CERN

(December 2014).

4. COMMISSIONING OF THE FACILITY

The commissioning of the CERN IRRAD facility started on Friday October 10th 2014 at 21:13 when

for the first time the primary 24 GeV/c proton beam extracted from the PS went through the new East

Area Irradiation Facility. The first weeks of operation, using a low intensity proton beam, are mainly

devoted to the beam steering and commissioning in order to study several T8 beamline optics

configurations required for the parallel operation of IRRAD and CHARM. Moreover, this pilot beam

was also used to test and calibrate the T8 beam instrumentation. This includes Secondary Emission

and Ionization chambers, a MWPC device and the IRRAD Beam Profile Monitors (BPM) that are

installed along the beam trajectory in the IRRAD area. The IRRAD BPMs are pixelated metal-foil

detectors based on the secondary electrons emission effect. A typical profile of the irradiation beam,

taken with a BPM during the first days of operation, is shown in Figure 12. Four BPMs are installed in

the IRRAD area allowing a precise and real-time tagging of the proton beam shape/intensity in the

Page 14: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 13 / 15

irradiation positions acting as a key element for the tuning of the proton irradiation beam. The

commissioning was performed together with the secondary beam-line physicist and the BE-OP

operator crew which controls the irradiation beam from the CCC. In parallel to this commissioning the

fluence monitoring system, produced at the Vilnius University, and the cold boxes, produced at the

Sheffield University, reached CERN and were tested and prepared for operation.

In November/December 2014 first irradiations for facility users were performed. Due to the limited

number of irradiation days and positions on the installed irradiation tables only a fraction of the

requested irradiations could be performed. The remaining requests had to be postponed to the next

irradiation period expected to start in May 2015. A total of 177 samples organized in 82 SETs (groups

of similar samples irradiated to same fluence) were irradiated to different fluences as requested by the

users. The table below (Table 1) gives an overview of the users community and the irradiated objects

for this first commissioning run of the facility and the Figures show some of the samples during

irradiation (Figure 18, Figure 19, Figure 20).

Experiment User contact Sample Type

IRR

AD

number of SET’s

External R&D R. Arinero MOS Capacitors 7 5 SET (10 samples)

RADMON B. Obryk TLD dosimeters 7 9 SET (36 samples)

CMS S. White APD 7 2 SET

ATLAS Pixel Upgrade J. Lange 3D pixels with FE-I4 7 9 SET (25 samples)

CERN PH-ESE S. Michelis Si chips (TSMC 130nm) 7 6 SET (12 samples)

CMS-ECAL A. Heering SiPM, APDs samples 7 1 SET (3 samples)

CMS-ECAL A. Heering Quartz Capillaries 7 1 SET (6 samples)

CMS-ECAL A. Heering Capillary reservoir (polymer) 7 1 SET

CMS-ECAL A. Heering GaInP Photomultiplier 7 1 SET

CMS-Pixel D. Pitzl Pixel sensors on PCB 7 3 SET

ATLAS Pixel A. Macchiolo Bare Silicon Pixel Sensors 7 5 SET

ATLAS Pixel A. Macchiolo VIT-NP1-7 e6 7 1 SET

RD18 Crystal Clear E. Auffray LuAG/YAG crystals & DSB glasses 7 6 SET

CMS-ECAL D. Bailleux LYSO plates & Y-11 fibres 6 SET

CMS-HCAL J-P. Merlo Scintillating Mat. (Hem, PEN,

SCSN81)

9 1 SET (4 samples)

CMS-HCAL J-P. Merlo Scintillating Mat. (PEN, antracene, ...) 9 1 SET (3 samples)

CMS-HCAL J-P. Merlo Plastic scint. & B/Ce doped crystals 9 2 SET (4 samples)

ATLAS Upgrade D. Muenstermann HV-CMOS & IBL sensors 7 6 SET (34 samples)

ATLAS Inner Pixel A. Rozanov AMS 180nm CMOS & readout chips 9 4 SET

CERN BE-BI M. Bartosik Cryogenic Beam Loss Monitors 15 5 SET

LHCb-Velo H. Schindler Silicon sensor on PCB 9 1 SET

ATLAS Inner Pixel M. Backhaus HV-CMOS detector prototypes 9 5 SET

Table 1: List of irradiation experiments performed during the first irradiation period of the new IRRAD facility.

Page 15: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 14 / 15

Figure 18: Example of detector components irradiated

during the commissioning run in November/December

2014 in the IRRAD-9 position.

Figure 19: Example of small sensor test structures

irradiated during the commissioning run in

November/December 2014 in the IRRAD-7

position.

Figure 20: Irradiation of components within the Helium cryostat in December 2014 (IRRAD-15) for the

Beam Loss Monitoring (BLM) project of the CERN accelerator sector.

Page 16: AIDA-D8.10 AIDA - CERN · AIDA-D8.10 AIDA Advanced European Infrastructures for Detectors at Accelerators Deliverable Report Commissioning of new facility equipment B.Gkotse, B. (CERN)

COMMISSIONING OF

NEW FACILITY EQUIPMENT

AIDA-Del-D8.10

Date: 29/01/2015

Grant Agreement 262025 PUBLIC 15 / 15

5. CONCLUSION

The new IRRAD facility has been successfully commissioned from October to December 2014. The

AIDA equipment deliverables in form of remote controlled tables, cold boxes, an offline fluence

monitoring system and the shuttle system are operational and working to expectations. Only the shuttle

system and the cold boxes could, although operational, not be tested in situ during the commissioning

run in 2014. They will be commissioned with beam during the next irradiation period expected to start

in May 2015.

The deliverable D8.10 “Commissioning of new facility equipment” has thus been realized as

documented in this report.

References:

[1] AIDA-D8.4., Upgrade scenarios for irradiation lines: : Upgrade of the Proton Irradiation Facility in the

CERN PS EAST AREA, F.Ravotti, M.Glaser and M.Moll, http://cds.cern.ch/record/1951308.

[2] M. Glaser, L. Durieu, C. Leroy, M. Tavlet, P. Roy and F. Lemeilleur, New irradiation zones at the CERN-

PS, Nucl. Instr. and Methods A426, pp. 72-77, 1999.

[3] F. Ravotti, M. Glaser, M. Moll, Dosimetry Assessments in the Irradiation Facilities at the CERN-PS

Accelerator, IEEE Trans. Nucl. Sci., 53(4), pp. 2016-2022, 2006.

[4] Working group on future irradiation facilities at CERN (http://www.cern.ch/irradiation-facilities/)

[5] East Area upgrade project (http://sba.web.cern.ch/sba/BeamsAndAreas/East/East.htm).

[6] AIDA-CONF-2014-019, Blerina Gkotse, Maurice Glaser, Pedro Lima, Emanuele Matli, Michael Moll,

Federico Ravotti, A New High-intensity Proton Irradiation Facility at the CERN PS East Area,

PoS(TIPP2014) 354, http://pos.sissa.it/archive/conferences/213/354/TIPP2014_354.pdf

[7] CHARM (Cern High energy AcceleRator Mixed field facility); http://www.cern.ch/charm/

[8] M.Glaser, M.Moll, F.Ravotti, Installation of new equipment : Movable irradiation tables operational,

AIDA-MS31, https://cds.cern.ch/record/1594787.

[9] The Birmingham Irradiation Facility, P.Dervan, R.French, P.Hodgson, H.Marin-Reyes, J.Wilson, NIMA

730, 2013, 101-104.

[10] Upgrade to the Birmingham Irradiation Facility, K.Parker, R.French, P.Hodgson, H.Marin-Reyes, J.Wilson,

M.Baca, P.Dervan, RESMDD14, 9th October 2014, to be published in the conference proceedings (NIMA).

[11] Pre-configured XY-axis Cartesian robot system for a new ATLAS scanning facilty, Mobile Service

Robotics, H.Marin-Reyes, R.French, P.Hodgson, K.Parker, J.Wilson, P.Dervan, CLAWAR 2014, 17th

International Conference on Climbing and Walking Robots and the Support Technologies for Mobile

Machines, Poznan, Poland, 21 – 23 July 2014,

Proceedings: http://www.worldscientific.com/doi/abs/10.1142/9789814623353_0056

[12] A. Tekorius, E. Gaubas, T. Ceponis, A. Jasiunas, A. Uleckas, J. Vaitkus, A. Velicka, Dosimetry of

background irradiations of accelerators based on hadrons fluence dependent carrier lifetime measurements.

Materials of the international conference “Radiation Interaction with Material and Its Use in Technologies

2012” Kaunas, “Technologija” (2012) 282.

[13] E. Gaubas, T. Ceponis, A. Jasiunas, A. Uleckas, J. Vaitkus, E. Cortina, and O. Militaru, Correlated

evolution of barrier capacitance charging, generation and drift currents and of carrier lifetime in Si

structures during 25 MeV neutrons irradiation, Appl. Phys. Lett. 101 (2012) 232104.

[14] A.Tekorius, E. Gaubas, T. Ceponis, J. Pavlov, J.Vaitkus, M. Glaser, and M. Moll, “Fluence and anneal

dependent variations of recombination parameters in Si irradiated by 26 GeV protons” in Materials of 5th

international conference „Radiation interaction with materials: fundamentals and applications - 2014“.

Technologija, Kaunas, 2014, p.p.432-435.