DRAFT v3.2

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     ![](media/image1.pct){width="0.44166666666666665in"                    
     height="0.41597222222222224in"} **Fermilab Directorate**               

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**MEMORANDUM OF UNDERSTANDING**

**FOR THE 2007-2008 TEST BEAM PROGRAM**

**T968**

**T2K muon monitor prototype test in the NuMI beam**

4 September, 2007

INTRODUCTION 3

I. PERSONNEL AND INSTITUTIONS: 5

II\. EXPERIMENTAL AREA, BEAMS AND SCHEDULE CONSIDERATIONS 5

III\. RESPONSIBILITIES BY INSTITUTION - NON FERMILAB 6

IV\. RESPONSIBILITIES BY INSTITUTION - FERMILAB 7

4.1 Fermilab Accelerator Division 7

4.2 Fermilab Particle Physics Division 7

4.3 Fermilab Computing Physics Division 7

4.4 Fermilab ES&H Section 7

V. Summary of Costs 8

VI\. SPECIAL CONSIDERATIONS 9

SIGNATURES 10

appendix i - Hazard Identification Checklist 11

Appendix II - Location of the TEST IN THE MINOS HALL 12

APPENDIX III - Material used in prototype detectors 13

APPENDIX IV - REQUESTS FOR PREP ELECTRONICS 14

APPENDIX V - RUN PLAN 15

INTRODUCTION

This is a Memorandum of Understanding (MOU) between the Fermi National
Accelerator Laboratory and experimenters of the T2K muon monitor
prototype who have committed to participate in beam tests to be carried
out during the 2007 NuMI program.

This memorandum is intended solely for the purpose of providing a work
allocation for Fermi National Accelerator Laboratory and the
participating universities and institutions. It reflects an arrangement
that is currently satisfactory to the parties involved. It is
recognized, however, that changing circumstances of the evolving
research program may necessitate revisions. The parties agree to
negotiate amendments to this memorandum to reflect such revisions.

This proposal outlines requirements for space in the NuMI muon monitor
alcove to test a small prototype of T2K muon monitor (MUMON). The
prototype, consisting of three channels of ionization chambers and four
channels of solid-state detectors will be exposed to the beam in the
NuMI beam tunnel. The project will be funded through US-Japan fund and
Grant-in-Aid for Scientific Research, MEXT, Japan.

MOTIVATION

As a next generation long baseline neutrino oscillation experiment, T2K
experiment in Japan will extend the experimental reach to theta_13, the
last mixing angle in neutrino oscillation, by almost an order of
magnitude from current best limit. If it is found to be sufficiently
large, it also opens a path to study CP violation and mass hierarchy
together with NOvA experiment at Fermilab.

In the long baseline experiment, understanding of the beam is of great
importance. As was done in K2K and being done in NuMI, properties of
muons produced from decays of pions will be used to understand the
neutrino beam, which are decay products of the same pion decay. Muon
monitor (MUMON) system has been designed to measure the spatial profile
of the muon beam. It will be placed behind the beam dump (hadron
absorber) to avoid harsh hadron background.

In T2K, MUMON is the only device that can provide bunch-by-bunch
information about the secondary/tertiary beam. In the commissioning
stage, it will be used to give quick feedback necessary for the beam
tuning. During the normal operation, shot by shot quality of the beam
will be guaranteed solely with MUMON. Thus, MUMON will provide vital
information throughout the experiment. On the other hand, MUMON needs to
work under high flux and radiation due to high intensity beam from
J-PARC accelerator. The expected charged particle flux at MUMON is about
10^8^ particles/cm^2^ per spill with the design intensity of J-PARC
(0.75 MW) at the maximum.

The T2K-MUMON system is designed as a combination of ionization chamber
array and pad solid-state detectors. The Japanese members of this test
experiment have performed three sets of beam tests with 100 MeV electron
beam at Kyoto University during 2005-2006, using prototype MUMON
detectors. Although much information and experience were obtained
through one-week long beam tests, it has been realized that an operation
experience under high intensity environment with longer term is highly
important. There are only a few places where the experimenters can
perform such a test, and the NuMI beamline at Fermilab is one of them.
With a run of half a year, the experimenters expect to gain invaluable
experience with MUMON system.

This program also strengthens the international collaboration between
Fermilab and Japan in the area of neutrino program, which is recently
initiated with SciBooNE (E-954) experiment.

PROJECT DESCRIPTION

The MUMON prototypes will be placed in the second muon alcove of the
NuMI tunnel, where the second (from upstream) NuMI muon monitor is
located. The ionization chamber houses three pairs of 4"x4" parallel
plates and the outer size is about 1'x3'. The size of silicon and
diamond sensors is about 1x1cm^2^ each. The detectors will be \`hooked'
onto one of the I-beams of the NuMI muon monitor support structure
without disturbing the NuMI muon monitor.

The chamber will be designed, fabricated and tested in Japan before
being delivered to Fermilab. The chamber gas will be helium, the same as
the NuMI muon monitor. The experimenters plan to use exhaust from NuMI
muon monitor in order to avoid significant amount of piping from the
ground level to NuMI tunnel, which will otherwise be necessary. In order
to assure the equipment will not disturb measurements for NuMI, the
experimenters need to place a bubbler between NuMI tubing and ours.
Funding for this gas system upgrade is being requested as a part of NuMI
improvement and its approval has significant impact on this test beam
program. The installation of MUMON into beamline will be done with
assistance from appropriate Fermilab division/section.

The muon fluence at proposed position in NuMI is about
10^6^/cm^2^/spill. This roughly corresponds to the anticipated fluence
at T2K MUMON position in the commissioning stage of the experiment. The
data will be taken during NuMI/MINOS running. The run plan is included
as Appendix IV.

# **PERSONNEL AND INSTITUTIONS:**

Scientific spokesperson: Masashi Yokoyama, Kyoto University

Fermilab liaison: R. Rameika

The group members at present are:

1.1 Kyoto University: H. Kubo, K. Matsuoka, T. Nakaya, M. Yokoyama

Other commitments:

> SciBooNE: T. Nakaya, M. Yokoyama
>
> T2K: H. Kubo, K. Matsuoka, T. Nakaya, M. Yokoyama

1.2 Fermilab: R. Rameika

Other commitments:

MINOS: R. Rameika

1.3 University of Texas, Austin : S. Kopp, M. Proga

Other commitments:

> MINOS: S. Kopp

# 

# **II. EXPERIMENTAL AREA, BEAMS AND SCHEDULE CONSIDERATIONS**

1.  LOCATION

    1.  The prototype MUMON detectors will be located in the second muon
        alcove of the NuMI beamline (see Appendix II). There is a space
        available to house 1'x3' prototype (including support structure)
        behind NuMI muon monitors, where there is no interference with
        operation of NuMI muon monitors. From viewpoint of particle
        flux, it is preferred to place MUMON just behind NuMI monitor at
        the center of beam, if it is confirmed not to disturb NuMI
        operation. The installation is planned during FY2007 shutdown of
        the FNAL accelerators.

    2.  Additional workspace will be needed nearby, equivalent to at
        most one 6'x3' tables. This space will be used for general
        workspace.

    3.  Access to a computer network will be necessary.

2.  BEAM

    1.  This test utilizes the NuMI beam. Any of the NuMI beam tunes are
        acceptable for the test.

    2.  Data from NuMI muon monitor will be combined with data from the
        T2K-MUMON prototype. S. Kopp is the expert on NuMI muon monitor
        and will be expert.

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2.  SETUP

    1.  All of the equipment will be lowered to NuMI beamline using the
        elevator.

    2.  New fireproof cables for signal readout and high voltage supply
        are laid on the existing cable rack.

    3.  Piping of gas tubes inside and around the muon alcove will be
        needed. The experimenters plan to use exhaust gas from NuMI muon
        monitor to minimize the necessary work. Approval of gas system
        upgrade for NuMI muon monitor is necessary to realize this plan.

    4.  Spare channels of NuMI muon monitor may be used for data
        acquisition of MUMON.

    5.  Additional high voltage supply will be necessary because there
        are no spare channels in the NuMI system. The cables for HV
        supply need to be terminated.

    6.  All electronics racks will have rack protection smoke detectors
        and shunts installed.

3.  SCHEDULE

    1.  The experimenters anticipate that the MUMON prototypes will be
        ready to come to Fermilab in Summer, 2007.

    2.  Installation of the detectors is scheduled during accelerator
        shutdown in FY2007.

    3.  After the detectors are installed in place, there will be some
        'commissioning' period where the detectors will be operated
        without beam and the performance checked.

    4.  Once the NuMI beam is turned on, the experimenters of this test
        experiment will not request to stop the beam for e.g.
        maintenance of our equipment in the beamline, but may utilize
        downtime of the beam for other reasons, if any, for that purpose
        with coordination by PPD and NuMI/MINOS group.

    5.  The run plan is included as Appendix IV.

# **III. RESPONSIBILITIES BY INSTITUTION - NON FERMILAB**

> (\[\] denotes replacement cost of existing hardware.)

**Kyoto University**

1.  Ionization chamber \[\$10k\]

2.  Silicon PIN diode \[\$0.5k\]

3.  Diamond detectors \[\$5k\]

4.  Digital Oscilloscope \[\$5k\]

5.  Support structure \[\$5k\]

6.  Gas tube \[\$1k\]

7.  Cables \[\$1k\]

8.  Gas quality monitors \[\$5k\]

Total existing items \[\$32.5k\]

**IV. RESPONSIBILITIES BY INSTITUTION - FERMILAB**

(\[\] Denotes replacement cost of existing hardware.)

## 4.1 Fermilab Accelerator Division:

1.  Accelerator Division will assist the experimenters to access to the
    NuMI tunnel.

2.  Accelerator Division Networking will support the experimenters in
    the network connection.

4.1.S Summary of Accelerator Division costs:

Type of Funds Equipment Operating Personnel

(person-weeks)

Total new items \$0.0K \$0K 0.0

## 4.2 Fermilab Particle Physics Division 

4.2.1 The PPD ES&H Department will assist in all of the necessary safety
reviews.

4.2.2 The PPD will assist in the installation of detectors into NuMI
tunnel, including piping of gas from NuMI muon monitor exhaust to MUMON
system. (4 person-weeks)

4.2.3 The PPD will ensure that all electronic racks have smoke detection
protection circuits installed.

4.2.4 The PPD / Neutrino Dept. will coordinate access into the NuMI
tunnel.

4.2.5 The PPD / Neutrino Dept. will supervise the installation of a
computer network at the muon alcove location.

4.2.S Summary of Particle Physics Division costs:

Type of Funds Equipment Operating Personnel

(person-weeks)

Total new items \$0K \$0K 4

4.3 Fermilab Computing Division

1.  Some PREP equipment, such as high voltage supply system, will be
    required. The list of requested equipment is attached in appendix.

2.  Will install computer networking at the muon alcove location, as
    managed by the PPD.

Type of Funds Equipment Operating Personnel

(person-weeks)

PREP equipment \[\$5.0K\] \$0K 0.2

Total existing items \[\$5.0K\] \$0K 0.0

Total new items \$0.0K \$0K 0.2

4.4 Fermilab ES&H Section

1.  Assistance with safety reviews.

# 

# **V. Summary of Costs**

**Source of Funds \[\$K\] Equipment Operating Personnel**

(person-weeks)

Particle Physics Division \$0K 0 4

Accelerator Division 0 0 0

Computing Division \[\$5.0K\] 0 0.2

Totals Fermilab \[\$5.0K\] \$0.0K 4.2

Totals Non-Fermilab \[\$32.5K\]

# **VI. SPECIAL CONSIDERATIONS**

6.1 The responsibilities of the MUMON Spokesperson and procedures to be
followed by experimenters are found in the Fermilab publication
\"Procedures for Experimenters\"
(<http://www.fnal.gov/directorate/documents/index.html>). The Physicist
in charge agrees to those responsibilities and to follow the described
procedures.

6.2 To carry out the experiment, a number of Environmental, Safety and
Health (ES&H) reviews are necessary. This includes creating a Partial
Operational Readiness Clearance document in conjunction with the
standing Particle Physics Division committee. The MUMON Spokesperson
will follow those procedures in a timely manner, as well as any other
requirements put forth by the division's safety officer.

6.3 All regulations concerning radioactive sources will be followed. No
radioactive sources will be carried onto the site or moved without the
approval of the Fermilab ES&H section.

6.4 Because the gas used for ionization chambers will be identical to
what is already used for NuMI chambers in type and quantity, there is no
ODH concern.

6.5 A list of material used in the test chamber is given in Appendix
III.

6.6 All items in the Fermilab Policy on Computing will be followed by
experimenters (<http://computing.fnal.gov/cd/policy/cpolicy.pdf>).

6.7 The MUMON Spokesperson will undertake to ensure that no PREP and
computing equipment be transferred from the experiment to another use
except with the approval of and through the mechanism provided by the
Computing Division management. They also undertake to ensure that no
modifications of PREP equipment take place without the knowledge and
consent of the Computing Division management.

6.8 Each institution will be responsible for maintaining and repairing
both the electronics and the computing hardware supplied by them for the
experiment. Any items for which the experiment requests that Fermilab
performs maintenance and repair should appear explicitly in this
agreement.

6.9 If the experiment brings to Fermilab on-line data acquisition or
data communications equipment to be integrated with Fermilab owned
equipment, early consultation with the Computing Division is advised.

6.10 At the completion of the experiment:

6.10.1 The MUMON Spokesperson is responsible for the return of all PREP
equipment, Computing equipment and non-PREP data acquisition
electronics. If the return is not completed after a period of three
months after the end of running the MUMON Spokesperson will be required
to furnish, in writing, an explanation for any non-return.

6.10.2 The experimenters agree to remove their experimental equipment as
the Laboratory requests them to. They agree to remove it expeditiously
(in 30 days) and in compliance with all ES&H requirements, including
those related to transportation. All the expenses and personnel for the
removal will be borne by the experimenters.

6.10.3 The experimenters will assist the Fermilab Divisions and Sections
with the disposition of any articles left in the offices they occupied,
including computer printout and magnetic tapes.

6.10.4 An experimenter will report on the test beam effort at a Fermilab
All Experimenters Meeting.

**SIGNATURES:**

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ / /
2007

Masashi Yokoyama, Kyoto University

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ / 2007

Regina Rameika, MINOS group

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ / 2007

Greg Bock, Particle Physics Division

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ / 2007

Roger Dixon, Accelerator Division

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ / 2007

Victoria White, Computing Division

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ / 2007

William Griffing, ES&H Section

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ /2007

Hugh Montgomery, Associate Director, Fermilab

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
/ /2007

Stephen Holmes, Associate Director, Fermilab

**APPENDIX I - Hazard Identification Checklist**

Items for which there is anticipated need have been checked

<table style="width:100%;">
<colgroup>
<col style="width: 4%" />
<col style="width: 5%" />
<col style="width: 2%" />
<col style="width: 20%" />
<col style="width: 4%" />
<col style="width: 5%" />
<col style="width: 5%" />
<col style="width: 17%" />
<col style="width: 5%" />
<col style="width: 28%" />
</colgroup>
<tbody>
<tr class="odd">
<td colspan="4"><strong>Cryogenics</strong></td>
<td colspan="4"><strong>Electrical Equipment</strong></td>
<td colspan="2"><p><strong>Hazardous/Toxic</strong></p>
<p><strong>Materials</strong></p></td>
</tr>
<tr class="even">
<td></td>
<td colspan="3">Beam line magnets</td>
<td></td>
<td colspan="3">Cryo/Electrical devices</td>
<td></td>
<td>List hazardous/toxic materials</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3">Analysis magnets</td>
<td></td>
<td colspan="3">capacitor banks</td>
<td></td>
<td>planned for use in a beam line or experimental enclosure:</td>
</tr>
<tr class="even">
<td></td>
<td colspan="3">Target</td>
<td><strong>X</strong></td>
<td colspan="3">high voltage</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3">Bubble chamber</td>
<td></td>
<td colspan="3">exposed equipment over 50 V</td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td colspan="4"><strong>Pressure Vessels</strong></td>
<td colspan="4"><strong>Flammable Gases or Liquids</strong></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td colspan="3"></td>
<td>inside diameter</td>
<td colspan="2">Type:</td>
<td colspan="2"></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td colspan="3"></td>
<td>operating pressure</td>
<td colspan="2">Flow rate:</td>
<td colspan="2"></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td colspan="3"></td>
<td>window material</td>
<td colspan="2">Capacity:</td>
<td colspan="2"></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td colspan="3"></td>
<td>window thickness</td>
<td colspan="4"><strong>Radioactive Sources</strong></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td colspan="4"><strong>Vacuum Vessels</strong></td>
<td></td>
<td colspan="3">permanent installation</td>
<td colspan="2"><strong>Target Materials</strong></td>
</tr>
<tr class="even">
<td colspan="3"></td>
<td>inside diameter</td>
<td></td>
<td colspan="3">temporary use</td>
<td></td>
<td>Beryllium (Be)</td>
</tr>
<tr class="odd">
<td colspan="3"></td>
<td>operating pressure</td>
<td colspan="3">Type:</td>
<td></td>
<td></td>
<td>Lithium (Li)</td>
</tr>
<tr class="even">
<td colspan="3"></td>
<td>window material</td>
<td colspan="3">Strength:</td>
<td></td>
<td></td>
<td>Mercury (Hg)</td>
</tr>
<tr class="odd">
<td colspan="3"></td>
<td>window thickness</td>
<td colspan="4"><strong>Hazardous Chemicals</strong></td>
<td></td>
<td>Lead (Pb)</td>
</tr>
<tr class="even">
<td colspan="4"><strong>Lasers</strong></td>
<td></td>
<td colspan="3">Cyanide plating materials</td>
<td></td>
<td>Tungsten (W)</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3">Permanent installation</td>
<td></td>
<td colspan="3">Scintillation Oil</td>
<td></td>
<td>Uranium (U)</td>
</tr>
<tr class="even">
<td></td>
<td colspan="3">Temporary installation</td>
<td></td>
<td colspan="3">PCBs</td>
<td></td>
<td>Other :</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3">Calibration</td>
<td></td>
<td colspan="3">Methane</td>
<td colspan="2"><strong>Mechanical Structures</strong></td>
</tr>
<tr class="even">
<td></td>
<td colspan="3">Alignment</td>
<td></td>
<td colspan="3">TMAE</td>
<td></td>
<td>Lifting devices</td>
</tr>
<tr class="odd">
<td colspan="2">type:</td>
<td colspan="2"></td>
<td></td>
<td colspan="3">TEA</td>
<td></td>
<td>Motion controllers</td>
</tr>
<tr class="even">
<td colspan="2">Wattage:</td>
<td colspan="2"></td>
<td></td>
<td colspan="3">photographic developers</td>
<td></td>
<td>scaffolding/elevated platforms</td>
</tr>
<tr class="odd">
<td colspan="2">class:</td>
<td colspan="2"></td>
<td></td>
<td colspan="3">Other:</td>
<td></td>
<td>Others</td>
</tr>
</tbody>
</table>

**APPENDIX II LAYOUT OF THE MUMON TEST IN THE NuMI AREA.**

![](media/image2.jpeg){width="6.610416666666667in"
height="2.0652777777777778in"}

Schematic view of NuMI beamline around muon alcoves. MUMON will be
placed in Alcove 2 in the above figure.

![](media/image3.jpeg){width="3.3694444444444445in"
height="3.8041666666666667in"}

**Photo of the proposed site for the MUMON test in the NuMI muon
alchove. MUMON will be fixed to the I-beam of the structure, behind the
NuMI muon monitor.**

![](media/image4.png){width="6.6097222222222225in" height="5.675in"}

**Drawing of the T968 test chamber (by Kodai Matsuoka).**

![](media/image5.png){width="6.611805555555556in"
height="4.283333333333333in"}

**Drawing of parts to fix the T968 test chamber onto the NuMI muon
monitor stage (by Marek Proga of University of Texas, Austin).**

**APPENDIX III MATERIAL USED IN PROTOTYPE DETECTORS**

This section may be updated as needed.

Below is a list of material used for prototype MUMON detectors.

The material was chosen to minimize any radiation effects, referring to
past study done for NuMI, T2K and other experiments.

**Ionization Chamber**

Ionization chamber tube : Aluminum

Chamber electrode plate: Ceramic (Al~2~O~3~) with Ag/Pt plating.

Spacer between electrode plates: Ceramic (Al~2~O~3~)

Plate stand : PEEK plastic and Aluminum

Electrical feedthrough connector insulator : PEEK plastic

O-ring for gas sealing : Aluminum

Cable insulator: Polyimide (Kapton)

Gas tube: stainless and aluminum

Tube coupler: stainless and aluminum

HV cable: Fireproof rated

**Solid State Detectors**

Diamond detector: Diamond (1x1cm^2^) x2

Silicon PIN diode: Silicon (1x1cm^2^) x2

Detector holder : PEEK

Cable: Polyimide

**APPENDIX IV REQUEST FOR PREP ELECTRONICS**

The following list may be updated as needed:

1)  Crates

    a.  Mechtronics 156 NIM bin, 1 unit

    b.  CAMAC crate, 1 unit

2)  Power Supplies:

    a.  LeCroy 4032 HV power supply, 1 unit

    b.  BiRa systems 6700P CAMAC power supply, 1 unit

3)  CAMAC modules

    a.  LeCroy 2249W ADC, 1 unit

    b.  LeCroy 2132 HV-CAMAC interface, 1 unit

4)  NIM modules

    a.  LeCroy 222 dual gate generator, 2 units

    b.  LeCroy 428 quad in fan-in/out, 1 unit

**APPENDIX V RUN PLAN**

1\) Installation, setup 3 weeks

2\) Commissioning 2 weeks

3\) Data taking 6 months

Most of work in the beamline is to be done during the installation
period, while occasional, short accesses into the beamline are
anticipated in commissioning and data taking periods.