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  height="0.41597222222222224in"}![](media/image2.wmf){width="-31.988888888888887in"
  height="0.5944444444444444in"} **Fermilab Directorate**

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**MEMORANDUM OF UNDERSTANDING**

**FOR THE 2008 MESON TEST BEAM PROGRAM**

**T-977**

**Test beam calibration of the MINERvA detector components**

October 16, 2008

Table of Contents

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

2\. PERSONNEL AND INSTITUTIONS
..............................................................................\......\...5

3\. EXPERIMENTAL AREA, BEAMS AND SCHEDULE CONSIDERATIONS
....................................5

4\. RESPONSIBILITIES BY INSTITUTION - NON
FERMILAB.................................\...\...\...\...\...\...\...\...\...10

5\. RESPONSIBILITIES BY INSTITUTION --
FERMILAB............................................................10

6\. SUMMARY OF
COSTS......................................................................................................11

7\. SPECIAL
CONSIDERATIONS.................................................................................\............13

8\.
SIGNATURES......................................................................................................\.............14

APPENDIX I - HAZARD IDENTIFICATION
CHECKLIST.........................................................\...15

**APPENDIX II -- TERTIARY BEAMLINE
DETAILS...................................................................\...16**

> **1. INTRODUCTION**
>
> This memorandum outlines the plan for beam time at Fermilab during
> Fall and Winter 2008-2009 to test the MINERvA detector components.
> This memorandum is intended solely for the purpose of providing a work
> allocation for Fermi National Accelerator Laboratory and the
> participating universities. 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.
>
> The experimenters primary need is to calibrate the MINERvA
> scintillator response (visible energy) to protons, pions, and
> electrons, to measure the resolution, and to reduce and then estimate
> the bias on the calorimetric shower energy reconstruction for these
> particles. This MOU describes the details involved in achieving that,
> as well as other, secondary goals of the beam test.
>
> The experimenters require an upgrade of the the test beam capabilities
> to enable a usable rate for particles, especially pions, with momentum
> as low as 200 MeV/c. Assistance from the Meson Test Beam group and
> Fermilab (along with some MINERvA personel) is required to complete
> this upgrade.
>
> The MINERvA experiment will make detailed neutrino nucleus cross
> section measurements over a range of energies (one to tens of GeV) and
> target nuclei (He, CH, C, Fe, Pb). This range is not yet explored
> completely or consistently, yet understanding these interactions is
> vital for current and upcoming neutrino oscillation experiments such
> as NOvA. MINERvA will systematically measure the detailed final states
> of low energy interactions, the calorimetric final states of higher
> energy interactions, and will be sensitive to how the cross sections
> evolve with the mass number A of the target nucleus as well as
> incident energy. In all cases, the reconstruction of pions and protons
> individually, as well as the total energy in hadronic showers, are
> vital to the MINERvA analysis goals.
>
> The MINERvA test beam detector is a small version of the full
> detector. It will be approximately 1.1 meters square and roughly two
> meters long. The frame that contains the active components will be
> somewhat larger, approximately 3.5m x 3.5m x 3m in size. The
> scintillator readout is in the same UXVX orientation sequence as the
> full MINERvA detector. The frame holding the detector will importantly
> allow the experimenters to insert and remove lead and iron absorbers
> equivalent to the electron calorimeter (ECAL) and hadron calorimeter
> (HCAL) portions of the MINERvA detector. With no absorbers, the test
> detector will be like the fully-active MINERvA inner tracking
> detector.
>
> The specific need for lower momenta particles is best demonstrated
> with the following two plots; they show the expected proton and
> charged pion spectra for the three primary processes MINERvA will
> study. The reconstruction of the neutrino interaction kinematics and
> the identification of the exclusive process both depend on the
> reconstruction of angle and energy of these hadronic products. The
> tracking capabilities of MINERvA give excellent angle resolution with
> little bias. Around 300 MeV/c is where there is a transition from
> pions that usually range out to pions that usually interact. Analysis
> of test beam particles will constrain the resulting shower resolution
> and bias.
>
> ![](media/image3.png){width="3.3805555555555555in" height="2.025in"}
>
> Figure 1: Expected distribution of the leading pion (left) and proton
> (right) for quasi-elastic, resonance, and deep inelastic scattering
> events. It is the resonance and quasi-elastic hadron spectra that are
> particularly important for the MINERvA experiment. These estimates for
> the spectra and number of events for a CH target are for a NOvA-like
> medium energy beam with 12 x 10^20^ protons on target.
>
> There are two things that drive the schedule. The earliest the MINERvA
> test beam detector could be ready for beam is Winter 2008-2009. With
> no summer shutdown in 2008 the experimenters request an engineering
> run, probably in January 2009, which requires that the main beam
> components have already been installed. The experimenters would
> continue assembly of the detector and commissioning using cosmic rays.
> This commissioning will follow the same procedure as will be used for
> the MINERvA tracking prototype which will take place in Summer-Fall
> 2008. The other schedule driver is the time needed to accomplish the
> Meson Test Beam upgrade to create a suitable tertiary beam that can
> produce lower momenta hadrons at moderate rates. This process is
> expected to be a joint effort between MINERvA and MTest personnel
> prior to November 2008, with the bulk of the commissioning taking
> place in October 2008. In addition, by Summer 2009, the components
> needed for the MINERvA test beam detector must be available for re-use
> in the full MINERvA detector. Based on very preliminary estimates of
> the rates, the experimenters anticipate a six week run in the test
> beam will be adequate. This includes some running in low-momentum
> tunes of the existing secondary beamline as well as the new tertiary
> beam.
>
> The MINERvA experiment is funded by the DOE and the NSF. The test beam
> activities are funded primarily by an NSF-MRI plus the use and re-use
> (pre-use) of MINERvA detector components funded by the DOE.

2.  PERSONNEL AND INSTITUTIONS

    PI and Group Leader: Richard (Rik) Gran (University of Minnesota
    Duluth)

    Lead Experimenter in charge of beam test: Rik Gran (Unviersity of
    Minnesota Duluth)

    Deputy Experimenter in charge: Julian Felix (Universidad de
    Guanajuato)

    Fermilab liaison: Jorge Morfin (FNAL)

> The members of the group which will take part in the beamline design,
> installation, data taking activity and dismantling at Fermilab are:

Rik Gran (University of Minnesota Duluth)

Cody Rude (University of Minnesota Duluth)

Emily Draeger (University of Minnesota Duluth)

Julian Felix (University de Guanajuato)

Gerardo Zavala (University de Guanajuato)

Zaidy del Rosario Urrutia (University de Guanajuato)

> Aaron Higuera (University de Guanajuato)
>
> Carlos Perez (PUCP, Peru)
>
> Carmen Araujo (PUCP, Peru)
>
> Heidi Shellman (Northwestern University)
>
> Bruno Gobbi (Northwestern University)
>
> Lee Patrick (Northwestern University)
>
> Jorge Morfin\* (Fermilab)
>
> Kevin McFarland\*,\*\* (University of Rochester)
>
> Dave Pushka (Fermilab)
>
> Jim Kilmer (Fermilab)
>
> Paul Rubinov (Fermilab)
>
> Other MINERvA students, staff, and faculty may participate as shift
> takers for this experiment, and as technical experts on the detector
> subsystems MINERvA will install and operate.
>
> \* Co-spokespersons for the MINERvA experiment.
>
> \*\* PI on the NSF-MRI grant that supports the activity in this MOU.
> Gran is a co-PI.

3\. EXPERIMENTAL AREA, BEAMS AND SCHEDULE CONSIDERATIONS

1.  3.1 LOCATION

    1.  The tests will take place in MT6-2A and MT6-2B.

    2.  Office space including two desks and network connectivity will
        be provided for the duration of T-977, including pre-beam setup
        and commissioning time.

    3.  Space needed in or nearby the beams location, prior to assembly
        in 2A, to stage the components of the detector. Ideally this
        space will be available for several months prior to running as
        the different components of the detector become available.

    4.  The experimenters will need to be able to access the detector
        during the run period in order to insert or remove the
        absorbers.

    5.  The steel absorbers will weigh 600 pounds. This will require an
        overhead crane or gantry crane for configuration changes.

    6.  The experimenters need the ability to rotate the detector to
        take data at 25 degrees to normal incidence. The detector stand
        will be designed to allow for this.

    7.  If the beam profile demands it, or depends on the momentum
        selection, the experimenters need to be able to reposition the
        detector in the optimum location in the beam.

    8.  This experiment will require the design and construction of a
        tertiary beamline that will bend particles to the right of the
        nominal secondary beam, and the beam instrumentation and the
        detector will be placed in this area. The plan for this tertiary
        beamline is outlined in Appendix II.

    9.  The experimenters will also take some running in the secondary
        beam in the area MT6-2B, thus preparations are needed for two
        separate stand locations.

> 3.2 BEAM REQUIREMENTS

1.  Secondary Beam: particles between 1 GeV/c and 10 GeV/c. Species
    tagged to be pions and protons for the main calorimetry work, but
    also electrons and muons for calibration purposes. The HCAL
    configuration of this detector will stop 1.2 GeV/c muons.

2.  Tertiary Beam: particles between 200 MeV/c and 1000 MeV/c. Species
    tagged to be pions and protons for the main calorimetry and
    kinematic work, but also electrons and muons for calibration
    purposes. See Appendix II for more tertiary beam details.

3.  Intensity Needed: 200 to 1000 particles per 4 second spill.

4.  Beam size needed: \~100 cm2 (10 cm diameter or square).

5.  See table for other beam parameters required, followed by detailed
    description.

6.  For runs where the experiment is collecting hadron showers,
    especially for middle and high momenta, it is expected that shower
    fluctuations will be large. The experimenters need a resolution on
    the incident particle momentum that is significantly less than this,
    on the order of dp/p = 5%.

7.  For the lowest momentum runs, the experimenters will collect a large
    number of stopping hadrons. In this case the experimenters will use
    the data to measure the stopping range. The experimenters would like
    a much tighter resolution: 1.0%. For stopping muons with 1000 MeV/c
    momentum, the experimenters expect an intrinsic resolution of 4% in
    the HCAL configuration of our detector. In fact, it is expected that
    this resolution goal will be the most difficult to achieve for the
    lowest momentum beams, especially from the effects of multiple
    scattering. Alternatively, it may be satisfactory to know the shape
    of the momentum resolution accurately, or to calibrate and know the
    particle momenta across the beam spot using upstream tracking
    chambers in the beamline and MINERvA\'s intrinsic tracking
    capabilities, even if the variation is larger than the desired
    value.

8.  In both cases above, the experimenters require the absolute bias to
    be small. The target for the resulting uncertainty in the total bias
    is 2% for MINERvA analysis, so the test beam\'s intrinsic bias needs
    to be smaller than this for most of the momentum range, similar to
    the level of statistical error. The bias will necessarily be larger
    at the lowest momentum due to multiple scattering in the beamline
    components. At moderate and higher momenta it will probably be
    driven by ability to model the decay muon and electron backgrounds
    for the analysis. The analysis can tolerate a bias close to 1%, at
    which point it becomes a major contributor to the total error
    budget. The experimenters would like help in performing an
    aggressive program of cross-calibration between the secondary and
    tertiary beam, as well as redundant measurements of the beamline to
    help manage this uncertainty.

9.  The experimenters are assuming a few cm beam size at 1000 MeV/c. For
    a larger spot size, especially in cases in the tertiary beam where
    the momentum spread in the beam or the backgrounds dominate the flux
    off center, the experimenters may purposely want to use scintillator
    to trigger on a smaller spot. \[This trigger system will be the
    responsibility of MINERvA.\]

10. Purity. The experimenters aim to obtain a purity of 95% after PID
    tagging, and enough information to estimate the remaining
    backgrounds and subtract them. This will require the standard MTEST
    instrumentation (Cerenkov, TOF, tracking) in the secondary beam to
    tag and trigger on the resulting particles. At the lowest momenta in
    the tertiary beam, the backgrounds will be from electrons and also
    muons coming from pion decay, that the experimenters estimate might
    intrinsically be as high as 80% of the particles in the beam. To get
    the purity required, the PID instruments should allow rejection of
    wrong-species particles with 99% efficiency. Decay muons will
    probably be the dominant impurity at the lowest momenta; rejecting
    these may require information from the MINERvA detector itself.
    Depending on the beam scenario, the experimenters may want to apply
    the PID tags off-line, but more frequently will want to form a
    trigger from them. The electronics to form the trigger are the
    responsibility of the experimenters, though they may use logic
    modules and space in crates in the MTest control room.

11. Intensity. The experimenters want \~200 particles per spill at the
    lowest momenta, up to \~1000 per spill at higher momenta. These
    values are for the actual species of interest (e.g. Pions), not for
    the combination of selected species and background, and will be the
    dominant challenge at the lowest momentum tunes in each beam. There
    will likely be a practical upper limit to the physical rate in the
    detector the experiment can handle because of the MINERvA DAQ
    electronics, currently expected to be at least 100 Hz if the
    experimenters use the currently planned dual/parallel readout
    system. The Accelerator Division will make a best-faith effort in
    achieving the desired rates, and the experimenters will work with
    the AD personnel to understand what is ultimately achievable.

12. The experimenters are assuming a 4 second spill duration, arriving
    every one minute, for 14 hours per day (840 spills per day, not
    including shot setup or down time). The request is actually for
    integrated spills with the minimum intensity shown, for a duration
    of four weeks: 20,000 spills total with at least 200
    species-selected particles per four-second spill. This will give
    suitable data at the lowest rate, lowest momentum beam tunings in
    one 12 hour period. Arrangements to achieve the same integrated
    triggers at a slower or faster rate could be satisfactory.

13. Beam placement. The test beam needs to be steered within a few
    centimeters of the center of the MINERvA test beam detector. The
    detector stand will allow the experimenters to move detector to the
    optimal position in the beam.

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3.  EXPERIMENTAL CONDITIONS

    1.  The space in MT6-2A will be cleared in order to prepare for the
        installation of the detector via the hatch. The space needs to
        remain clear enough to allow repositioning the detector at two
        angles each in the secondary and tertiary beam.

    2.  A tertiary beamline is required to achieve particle momenta
        below 1 GeV/c. The design and construction of this beamline is a
        joint effort between MTEST and the MINERvA experimenters.

    3.  The experimenters are evaluating several possible TOF systems,
        including the standard units available at MTest, and some
        alternatives identified by Erik Ramberg. If the capabilities of
        the standard 150 ps TOF system are found to be inadequate, the
        experimenters will consider what steps to take and amend this
        MOU as necessary.

    4.  High resolution tracking chambers will be needed in the tertiary
        beamline. The experimenters are considering the "Fenker"
        chambers already available at MTEST and also wire chambers
        identified from the HyperCP experiment for their use. The
        experimenters will work with the MTEST personnel to recondition
        and test these.

    5.  Some care will be needed to keep the temperature in the
        experimental area from fluctuating wildly, especially since the
        plan is to run during the winter. At a minimum, the facilitity
        certainly needs to minimize opening exterior doors and avoid
        opening doors into the experimental area during running. A
        temperature readout provided by Mtest will be needed during data
        taking periods.

    6.  When the 14 hours of beam time is done for the day, the
        experimenters will usually leave the system on and keep the
        electronics "warm" overnight, if the requirements of ORC have
        been satisfied. If other activity in MTEST permits, the
        experimenters will likely switch to a cosmic trigger and collect
        muons during the beam off hours. The detector will have adequate
        safety protection for the racks and electronics, and the
        collaboration will maintain a shift person during these times if
        required to do so (but prefer not to, if a shift person is not
        needed).

    7.  The experimenters will provide the computers needed for DAQ,
        data analysis, and disks for on-location data storage.

    8.  Fermilab will provide 600 Gigabytes of space on backed-up
        managed disk server that will be used for long term access to
        the test beam data. The experimenters require network access to
        transfer these data, preferably continuously, or at a minimum
        after every run.

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4.  ELECTRONICS:

    1.  The beam and environmental variables will need to be inserted
        into the data stream.

    2.  The experimenters require suitable electronics to form a PID
        trigger. These already exist as part of the MTest facility.

    3.  The MINERvA electronics will open a gate, can take a trigger
        input which will decide between reading out the contents of that
        gate or clearing the contents and starting a new gate. There is
        roughly 10 microseconds time from the opening of the gate to
        when the trigger condition must be present.

    4.  The conditions that generate a trigger especially (but possibly
        also beam quantities) will need to be synchronized between the
        external components and the MINERvA DAQ while reading out
        hundreds of triggers per spill. Probably this is best done via a
        counter/timestamp system latched into each data stream
        separately. The experimenters will work with MTEST personnel to
        provide a suitable interface between all the components
        involved.

    5.  The experimenters will use the same custom front end electronics
        and DAQ system developed for the MINERvA experiment. The front
        end electronics are mounted on the PMT boxes in a frame right
        next to the scintillator, and are read out through VME and a PC.
        A low voltage system provides 48 V to Cockroft-Walton bases on
        the PMTs, so no exposed HV parts are present. All these
        components will be provided by the experimenters.

5.  SCHEDULE:

    1.  The time schedule is dictated by the availability of an
        operational tertiary beamline and the MINERvA test beam detector
        scintillator planes. As of this writing, the former is expected
        to be ready by the end of October, 2008, the latter by January
        2009.

    2.  A few months will be required to assemble and commission the
        MINERvA test beam detector, including the detector engineering
        run.

    3.  A few days setup in the beamline, followed by six weeks running
        (or more, depending on the particle rates achieved).

    4.  The experimenters prefer the 14 hour per day schedule.

    5.  Many configuration changes will require access to the
        experimental area, though the run plan will seek to minimize and
        optimize the frequency of these changes.

    6.  Runs will be taken with no absorber, with iron, and with lead,
        corresponding to the inner detector, hadron calorimeter, and
        electromagnetic calorimeter.

    7.  Runs will be taken in the secondary beamline and the tertiary
        beamline.

    8.  Runs will be taken at normal incidence and 25 degrees incident.

    9.  The nominal plan is to take runs in the tertiary beam will cover
        the range 200 to 1500 MeV/c, and settings in the secondary beam
        of 1000, 1200, 1400, 1600, 1800, 2000, 3000, 4000, 5000, and
        10000 MeV/c for the HCAL configuration. The tertiary beam will
        cover 1000 MeV/c and below, the secondary beam will cover 1000
        MeV/c and above, and both will provide data at 1000 MeV/c. Since
        the tertiary beam design does not allow tuning, the plan is to
        take a wide range of momenta in one or only a few configurations
        covering momenta up to 1600 MeV/c.  In the secondary beam, the
        experimenters request beam tunes at 10000, 5000, 4000, 3000,
        2000, 1800, 1600, 1400, 1200, and 1000 MeV/c.  The experimenters
        understand the pion content falls drastically in the secondary
        beam at these lowest momenta, and the beam may be essentially
        electrons only at 1000 MeV/c.

    10. The highest momentum tunes (1600 to 10000 MeV/c) will not be
        needed for the Pb ECAL runs or the tracker runs.

    11. Some runs will be taken in a mixed tracker-ECAL-HCAL
        configuration that most closely resembles the MINERvA detector.

    12. The inner detector configuration of the test beam is not
        designed to contain most particles. The experiment only needs a
        few runs with through going, and possibly stopping particles to
        calibrate dE/dx.

    13. The experiment will certainly need to run the beams with the
        opposite polarity.

    14. Some special runs with selected stopping and through going muons
        will be important. At 1200 MeV/c the HCAL detector will stop
        muons. The experimenters will need to obtain data at this
        momentum tune, and 1000 MeV/c to cross-calibrate the secondary
        and tertiary beamlines.

    15. The experiment may be required to split the proposed six week
        run into two separate periods, to allow for more flexible
        scheduling in the Meson Test Beam Facility.

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4.  RESPONSIBILITIES BY INSTITUTION - NON FERMILAB

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1.  The experimenters will take care of and monitor their detector when
    it is on, including times when it is operating in cosmic mode while
    other users have the beam. MINERvA experts are also responsible for
    their own DAQ and data handling, and for coordinating with MTEST to
    get access to the MTEST data stream. The experimenters will be
    responsible for coordinating the effort to calibrate the new
    tertiary beamline.

    The personnel from Northwestern (Bruno Gobbi, Heidi Schellman, Lee
    Patrick) and a student from Guanajuato (Aaron Higuera) will
    participate in the reconditioning of the HyperCP tracking chambers.
    Personnel from Guanajuato, Lima, and Duluth, plus Bruno Gobbi from
    Northwestern, and possibly others within the MINERvA collaboration,
    will participate in the installation and commissioning of the
    tertiary beamline and the components, especially Carlos Perez who
    has already been working on beamline simulations. Carmen Araujo
    (Lima) and Zaidy Urrutia (Guanajuato) are working on the Time of
    Flight system, including the use of the existing MTest system as
    well as a new, larger area replacement. This MOU will be amended at
    that time. Ph.D. student Zaida Urrutia (Guanajuato) who will be
    active through the analysis phase. Senior personnel will be playing
    many roles and include Bruno Gobbi, Rik Gran, Jorge Morfin, and
    Julian Felix. All the above are at or will be at Fermilab
    extensively during the Summer and Fall 2008.

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5.  RESPONSIBILITIES BY INSTITUTION - FERMILAB

## 5.1 Fermilab Accelerator Division:

1.  Use of MTest beam as outlined in Section 3.

2.  Maintenance of all existing standard beam line elements (SWICs, loss
    monitors, etc) instrumentation, controls, clock distribution, and
    power supplies.

3.  Reasonable access to the experimenters' equipment in the test beam.

4.  The test beam energy and beam line elements will be under the
    control of the AD Operations Department Main Control Room (MCR).

5.  Position and focus of the beam on the experimental devices under
    test will be under control of MCR. Control of secondary devices that
    provide these functions will be delegated to the experimenters as
    long as it does not violate the Shielding Assessment or provide
    potential for significant equipment damage.

    5.2 Fermilab Particle Physics Division

> 5.2.1 The Fermilab Particle Physics Division will be responsible for
> coordinating overall activities in the MTest beam-line, including use
> of the user beam-line controls, readout of the beam-line detectors,
> and MTest gateway computer.

2.  PPD will maintain scintillation counters that are part of the Meson
    Test Beam Facility.

3.  PPD will provide on-call LINUX DAQ computing support during normal
    working hours for the MTest DAQ facilities.

4.  PPD will commission and maintain the Meson Test Beam Facility
    tracking telescope and assist in coordinating it with the
    experimenters DAQ.

5.  PPD will design, simulate, and install the tertiary beam line and
    PID components. The experimenters will also be active participants
    in this effort, as described below.

6.  PPD will maintain all tertiary beamline components, especially those
    that will likely remain a part of the MTEST facility after the
    MINERvA run is over. This includes TOF, Cerenkov, tracking chambers,
    magnet and power supply.

7.  PPD will assist the experimenters in calibrating the beamline,
    including assistance in mapping the magnetic fields.

8.  PPD will provide office and lab space as detailed in 3.1.

> 5.3 Fermilab Computing Division

1.  Ethernet and printer will be available in the counting house.

2.  Connection to beams control console and remote logging (ACNET) will
    be made available in the counting house.

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1.  5.3.3 CD will provide mass storage in STKEN for 600 GB of data. This
    will remain for the duration of the MINERvA experiment (not just the
    test beam phase).

> 5.4 Fermilab ES&H Section

1.  Assistance with safety reviews, training, and personal dosimetry.

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1.  

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5.  SUMMARY OF COSTS

    Support for the design and construction of the MINERvA test beam
    detector comes from several sources. The NSF-MRI grant obtained in
    2006 provides \~\$100k worth of materials and design effort.
    Fermilab has committed significant labor resources. Some materials,
    such as the absorber and some frame elements, have been recycled
    from previous activities at Fermilab and the University of
    Rochester. Other pieces of this experiment are "on loan" from the
    full MINERvA experiment, and will need to be returned for
    installation in the NuMI beam line in 2009.

    The table below contains an estimate of the person-weeks effort and
    Fermilab equipment and operating costs. Jim Kilmer has made the
    estimate of the PPD personnel. Rik Gran has estimated the
    non-Fermilab contribution to the MINERvA test-beam detector design,
    engineering, and equipment and the operations phase, and includes
    university faculty and student involvement to the end of the physics
    run.

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

(person-weeks)

Particle Physics Division \$0k \$20k 8.5

Accelerator Division 0 0 0.5

Computing Division 0 0 0.1

Totals Fermilab 0k \$20k 9.1

Totals Non-Fermilab \$80k 200

1.  

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7.  SPECIAL CONSIDERATIONS

7.1 The responsibilities of the PI of the Minerva group and the
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.

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

7.3 The PI of the Minerva group will ensure that at least one person is
present at the Meson Test Beam Facility whenever beam is delivered and
that this person is knowledgeable about the experiment's hazards.

7.4 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.

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

7.6 The PI of the Minerva group will undertake to ensure that no PREP or
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.

7.7 The Minerva group 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.

7.8 At the completion of the experiment:

> 7.8.1 The PI of the Minerva group 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 one year
> after the end of running the PI of the Minerva group will be required
> to furnish, in writing, an explanation for any non-return.
>
> 7.8.2 The experimenters agree to remove their experimental equipment
> as the Laboratory requests them to. They agree to remove it
> expeditiously 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.
>
> 7.8.3 The experimenters will assist the Fermilab Divisions and
> Sections with the disposition of any articles left in the offices they
> occupied.

7.9 An experimenter will be available to report on the test beam effort
at Fermilab All Experimenters Meetings.

1.  **SIGNATURES**

> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / / 2008
>
> Richard Gran, University of Minnesota Duluth
>
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / / 2008
>
> Greg Bock, Particle Physics Division
>
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / / 2008
>
> Roger Dixon, Accelerator Division
>
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / / 2008
>
> Victoria White, Computing Division
>
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / / 2008
>
> William Griffing, ES&H Section
>
> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / /2008

Stephen Holmes, Associate Director, Fermilab

> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
> / /2008
>
> Young Kee Kim, Deputy Director, Fermilab

APPENDIX I - HAZARD IDENTIFICATION CHECKLIST

Items for which there is anticipated need have been checked

<table>
<colgroup>
<col style="width: 4%" />
<col style="width: 4%" />
<col style="width: 2%" />
<col style="width: 20%" />
<col style="width: 4%" />
<col style="width: 5%" />
<col style="width: 5%" />
<col style="width: 16%" />
<col style="width: 4%" />
<col style="width: 30%" />
</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></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>X</td>
<td colspan="3">Alignment</td>
<td></td>
<td colspan="3">TMAE</td>
<td><strong>X</strong></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><strong>X</strong></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: Activated Water?</td>
<td></td>
<td>Others</td>
</tr>
</tbody>
</table>

**Appendix II -- Tertiary Beamline Details**

> To achieve the low momenta particles critical for the MINERvA
> experiment, a tertiary beamline and its instrumentation must be built,
> installed, and commissioned. The tertiary beam consists of a target
> and a collimator, two bend magnets capable of delivering 100 MeV/c
> transverse momentum kick when combined, four tracking chambers, two
> time of flight units and some additional absorber material.
>
> A secondary target will be installed at or near the point where the
> secondary beam enters the MT6-2 area. It is made of copper and is
> between 23 and 28 centimeters long and 2.54 cm square. A steel
> collimator immediately follows the target. It has a channel coming off
> at 16 degrees from the secondary beam axis. With this design, the
> collimator also serves as a beam stop that absorbs much of the remnant
> beam. The target and collimator assembly will be combined and put on
> rails so that it can be moved in and out of the secondary beam.
>
> The momentum analyzing magnets are dipole trim magnets from the
> anti-proton line and will have an appropriate power supply capable of
> supplying 100 MeV/c transverse momentum kick. These, combined with the
> wire chambers described below, will be capable of measuring the
> momentum of particles that traverse the beamline to within the MINERvA
> resolution specification or the multiple scattering limit, depending
> on the particle momentum. The beamline design, installation, and
> commissioning is lead by Fermilab and MTest beam experts, Doug Jensen
> and Jim Kilmer, but with significant effort and input from MINERvA
> personnel, especially Jorge Morfin and Carlos Perez.
>
> ![](media/image5.jpeg){width="3.0833333333333335in"
> height="1.9479166666666667in"}
>
> Figure 2. A plan view of the tertiary beamline for T977.
>
> The experimenters have determined that the HyperCP wire chambers are
> best suited for the tertiary beam. A team of MINERvA folks, lead by
> Northwestern University (Bruno Gobbi, Heidi Schellman, Lee Patrick),
> are doing the work to refurbish them for MINERvA use. Electronics
> support has been provided by Paul Rubinov and others. MTest personnel
> will play the major role in interfacing this with the existing MTest
> CAMAC system and DAQ.
>
> The Time of Flight counters will need to be fast because of the short
> tertiary beamline. The experimenters want to build a larger area
> scintillator time of flight system that can achieve 160 ps resolution
> after using offline analysis and position information. This system is
> still under development and is a joint effort between MTest and
> MINERvA personnel. Bruno Gobbi, Rik Gran, and Carmen Araujo are
> playing the largest role on the MINERvA side, again with some
> electronics support from Fermilab. There is an alternate RPC based
> system that BNL and Rice University have offered to lend to MNERvA and
> MTest. It has demonstrated 80ps resolution and meets the other size
> requirements for this experiment. The experimenters are still
> considering whether this improved resolution is worth the cost and
> effort needed to use it.
>
> For the tertiary beamline commissioning, the experimenters plan to use
> the existing Fenker chambers and scintillator-based time-of-flight.
> This commissioning will take place without the MINERvA detector,
> allowing those doing the commissioning to use the full space for the
> different configurations needed to understand the content of the beam.
> Other beamline instrumentation and absorbers available at MTest will
> likely be an asset in analyzing this beam, and may be used in
> consultation with MTest experts. If portions of the new TOF and Wire
> Chambers are ready for testing in the beam, they may be put in the
> beam for testing during this time.
>
> The first opportunity to begin beamline commissioning is October,
> though some mechanical installation steps may take place in the weeks
> before the first beam is delivered. At that time many MINERvA students
> plus one or two from Universities will be available and on site and
> active in the process. These activities are not included in the six
> weeks needed for physics data.
>
> The schedule includes an engineering run with the detector, which may
> take place after the beamline is commissioned, or alternatively may
> run in the existing secondary beam. The experimenters will operate the
> MINERvA test beam detector with at least four live planes during this
> time. This run is also not included in the estimated six weeks for
> physics data.
>
> Prior to and following this engineering run, the experimenters will
> proceed with the rest of the detector commissioning using cosmic ray
> muons. For commissioning purposes, the experiment anticipates
> significant time with access to the detector but no beam, including
> taking data with cosmic muons and also assembly and calibration
> activities. This will likely take place during times when other users
> are in the beamline but not actually taking beam, and will require
> additional schedule coordination. If MINERvA obtain suitable ORC we
> may want to take data out of the beamline but parasitically to these
> other users.